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- Improved sketching

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This commit is contained in:
bklronin
2025-11-16 17:48:05 +01:00
parent 11d053fda4
commit d6044e551a
4 changed files with 1044 additions and 197 deletions
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170
doc/SKETCHER_TECHNICAL_DOCUMENTATION.md
View File

@@ -257,7 +257,7 @@ def _setup_coordinate_system(self, painter: QPainter):
### Mode-Based Interaction
The sketcher supports multiple interaction modes:
The sketcher supports multiple interaction modes with robust mode management:
#### Drawing Modes
- `SketchMode.LINE`: Two-point line creation
@@ -272,7 +272,80 @@ The sketcher supports multiple interaction modes:
- `SketchMode.DISTANCE`: Distance/length constraint
#### Selection Mode
- `SketchMode.NONE`: Selection and manipulation mode
- `SketchMode.NONE`: Selection and manipulation mode (enables point dragging)
### Selection and Deletion System
The sketcher now includes a comprehensive selection and deletion system that allows users to select and remove elements from the sketch.
#### Selection Methods
1. **Single Element Selection**: Click on individual points or lines to select/deselect them
2. **Rectangle Selection**: Click and drag to create a selection rectangle for multiple elements
3. **Visual Feedback**: Selected elements are highlighted in yellow with increased size
#### Deletion Methods
1. **Keyboard Deletion**: Press Delete or Backspace to remove selected elements
2. **Proper Cleanup**: Elements are removed from both the sketch and constraint solver
3. **Dependency Handling**: Lines are deleted before points to maintain geometric integrity
#### Implementation Details
The selection system is implemented through the following components:
- **Selection Tracking**: `selected_elements` list tracks currently selected elements
- **Rectangle Selection**: `selection_rect_start` and `selection_rect_end` track rectangle selection bounds
- **Visual Feedback**: Modified drawing methods highlight selected elements in yellow
- **Keyboard Support**: `keyPressEvent` handles Delete/Backspace keys
- **Deletion Method**: `delete_selected_elements` handles removal of elements from sketch and solver
#### Selection Workflow
1. **Default Selection Mode**: The sketcher defaults to selection mode when no drawing tool is active
2. **Element Selection**:
- Click on points or lines to select/deselect them (they turn yellow)
- Click and drag to create a rectangle selection for multiple elements
3. **Element Deletion**:
- Press Delete or Backspace to remove all selected elements
- Elements are removed from both the sketch and constraint solver
4. **Visual Feedback**:
- Selected elements are highlighted in yellow
- Rectangle selection is shown with a yellow dashed border
#### Constraints Handling
When elements are deleted:
- Lines are removed first to avoid issues with points being used by lines
- Points are only removed if they are not used by any remaining lines
- The constraint solver is re-run after deletion to update remaining constraints
- Proper error handling ensures the UI remains responsive even if solver operations fail
### Mode Management System
The mode system has been enhanced to provide intuitive selection and deletion functionality:
#### Mode Compatibility
- Python `None` is automatically converted to `SketchMode.NONE` for backward compatibility
- The `set_mode()` method ensures the mode is always a valid `SketchMode` enum value
- Mode changes reset all interaction buffers and state
#### Default Selection Behavior
- `SketchMode.NONE` now serves as the default selection mode
- When no drawing tool is active, the sketcher is in selection mode by default
- Users can click on elements to select/deselect them (they turn yellow)
- Users can click and drag to create rectangle selections
- Pressing Delete or Backspace removes all selected elements
#### Right-Click Behavior
- Right-clicking **always** exits any active mode and returns to `SketchMode.NONE`
- This enables point dragging and prevents unintended geometry creation
- The mode reset happens directly in the sketcher, not through main app signals
#### Point Dragging Safety
- Point dragging is **only** enabled when in `SketchMode.NONE` mode
- Left-clicks in `NONE` mode check for draggable points first
- If no point is found, the click is processed as a selection operation
### Mouse Event Handling
@@ -282,14 +355,45 @@ def mousePressEvent(self, event):
local_pos = self._viewport_to_local(event.pos())
if event.button() == Qt.LeftButton:
if self.current_mode == SketchMode.NONE:
# Check for point dragging
point = self.sketch.get_point_near(local_pos)
if point:
self._start_point_drag(point, local_pos)
self._handle_left_click(local_pos)
elif event.button() == Qt.RightButton:
self._handle_right_click(local_pos)
elif event.button() == Qt.MiddleButton:
self._start_panning(event.pos())
```
#### Enhanced Left-Click Handler
```python
def _handle_left_click(self, pos: QPoint):
# Safety check for NONE mode (dragging enabled)
if self.current_mode == SketchMode.NONE or self.current_mode is None:
point = self.sketch.get_point_near(pos, self.snap_settings.snap_distance)
if point:
self._start_point_drag(point, pos)
return
else:
# Handle drawing modes
self._handle_left_click(local_pos)
# No point found - ignore click to prevent unintended drawing
return
# Handle active drawing/constraint modes
if self.current_mode == SketchMode.LINE:
self._handle_line_creation(pos)
elif self.current_mode == SketchMode.HORIZONTAL:
self._handle_horizontal_constraint(pos)
# ... other modes
```
#### Right-Click Mode Reset
```python
def _handle_right_click(self, pos: QPoint):
# Reset interaction state
self._reset_interaction_state()
# Force mode to NONE to enable dragging
self.current_mode = SketchMode.NONE
# Emit signal to inform main app
self.constraint_applied.emit()
```
### Point Dragging System
@@ -531,7 +635,12 @@ widget.show()
**Mode Control:**
```python
# Set drawing modes
widget.set_mode(SketchMode.LINE)
widget.set_mode(SketchMode.NONE) # Enable selection/dragging
widget.set_mode(None) # Also converted to SketchMode.NONE
# Construction geometry
widget.set_construction_mode(True)
```
@@ -624,6 +733,22 @@ widget.sketch_modified.connect(callback)
### Common Issues
#### Mode Handling Problems
**Symptoms**: Unintended line creation when dragging, tools not deactivating properly
**Causes**: Mode not properly reset to NONE, Python None vs SketchMode.NONE confusion
**Solutions**:
- Always right-click to exit active modes
- Ensure `set_mode(None)` is converted to `SketchMode.NONE`
- Verify mode state after tool deactivation in main app
#### Point Dragging Issues
**Symptoms**: Cannot drag points, dragging creates unwanted lines
**Causes**: Mode not set to NONE, safety checks preventing drag detection
**Solutions**:
- Verify current mode is `SketchMode.NONE` before attempting to drag
- Right-click to ensure proper mode exit from drawing tools
- Check that point detection threshold is appropriate
#### Solver Failures
**Symptoms**: Constraints not applied, geometry not updating
**Causes**: Over-constrained systems, conflicting constraints
@@ -690,8 +815,35 @@ Key log messages include:
---
## Recent Improvements (2025-08-16)
### Mode Handling Enhancements
Significant improvements have been made to the mode management system:
#### Fixed Issues
1. **Unintended Line Creation**: Resolved issue where dragging with line tool deactivated would still create lines
2. **Mode Reset Reliability**: Right-click now reliably exits any active mode and returns to NONE
3. **Backward Compatibility**: Python `None` mode values are automatically converted to `SketchMode.NONE`
4. **Safety Checks**: Added comprehensive checks to prevent drawing operations in NONE mode
#### Implementation Details
- Enhanced `_handle_right_click()` to directly set mode to NONE
- Added safety checks in `_handle_left_click()` for NONE mode behavior
- Improved `set_mode()` method to handle None input gracefully
- Added comprehensive debug logging for mode transitions
#### Integration Improvements
- Fixed main app integration where constraint modes were prematurely reset
- Ensured persistent constraint behavior until explicit user cancellation
- Maintained UI button state consistency with actual sketcher mode
These improvements ensure reliable mode transitions and prevent common user frustrations with unintended geometry creation.
## Conclusion
The ImprovedSketchWidget provides a robust, extensible foundation for 2D parametric sketching in Fluency CAD. Its architecture separates concerns effectively, uses proven libraries (SolverSpace, PySide6), and provides rich interaction capabilities while maintaining good performance characteristics.
The system is designed for extensibility - new geometry types, constraint types, and interaction modes can be added following the established patterns. The comprehensive API allows for both direct use and integration with larger CAD systems.
With the recent mode handling improvements, the sketcher now provides a more reliable and intuitive user experience, with proper separation between drawing modes and selection/manipulation operations.

220
drawing_modules/improved_sketcher.py
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@@ -292,6 +292,17 @@ class ImprovedSketch(SolverSystem):
return circle
except Exception as e:
raise SolverError(f"Failed to add circle to solver: {e}")
def remove_entity(self, handle):
"""Remove an entity from the solver system"""
try:
# This is a placeholder implementation
# In a real implementation, you would need to properly remove the entity from the solver
logger.debug(f"Removing entity with handle: {handle}")
# For now, we'll just log the removal - the actual removal is handled in the sketcher
except Exception as e:
logger.warning(f"Failed to remove entity from solver: {e}")
# We don't raise an exception here because the UI removal is more important
def solve_system(self) -> ResultFlag:
"""Solve the constraint system with error handling"""
@@ -364,6 +375,7 @@ class ImprovedSketchWidget(QWidget):
"""Initialize widget properties"""
self.setMouseTracking(True)
self.setMinimumSize(400, 300)
self.setFocusPolicy(Qt.StrongFocus) # Ensure widget can receive focus
def _setup_state(self):
"""Initialize widget state"""
@@ -375,9 +387,12 @@ class ImprovedSketchWidget(QWidget):
# Interaction state
self.hovered_point: Optional[Point2D] = None
self.hovered_line: Optional[Line2D] = None
self.hovered_circle: Optional[Circle2D] = None
self.hovered_snap_point: Optional[QPoint] = None # For snap point display
self.snap_type: Optional[str] = None # Type of snap ("point", "midpoint", etc.)
self.selected_elements = []
self.selected_elements = [] # List of selected elements for deletion
self.selection_rect_start: Optional[QPoint] = None # For rectangle selection
self.selection_rect_end: Optional[QPoint] = None # For rectangle selection
# Dragging state
self.dragging_point: Optional[Point2D] = None
@@ -415,6 +430,11 @@ class ImprovedSketchWidget(QWidget):
self.current_mode = mode
self._reset_interaction_state()
logger.info(f"Mode changed to: {mode}")
# Special handling for constraint modes
if mode in [SketchMode.DISTANCE, SketchMode.HORIZONTAL, SketchMode.VERTICAL,
SketchMode.COINCIDENT_PT_PT, SketchMode.COINCIDENT_PT_LINE]:
logger.info(f"Entering constraint mode: {mode}")
def set_construction_mode(self, enabled: bool):
"""Enable or disable construction geometry mode"""
@@ -501,6 +521,13 @@ class ImprovedSketchWidget(QWidget):
if self.panning and self.pan_start_pos:
self._handle_panning(event.pos())
return
# Handle rectangle selection in NONE mode
if ((self.current_mode == SketchMode.NONE or self.current_mode is None) and
self.selection_rect_start):
self.selection_rect_end = local_pos
self.update()
return
# Update hover state
self._update_hover_state(local_pos)
@@ -519,6 +546,14 @@ class ImprovedSketchWidget(QWidget):
self._end_point_drag()
elif event.button() == Qt.MiddleButton and self.panning:
self._end_panning()
elif event.button() == Qt.LeftButton:
# Handle rectangle selection completion
if ((self.current_mode == SketchMode.NONE or self.current_mode is None) and
self.selection_rect_start and self.selection_rect_end):
self._perform_rectangle_selection()
self.selection_rect_start = None
self.selection_rect_end = None
self.update()
self.update()
def wheelEvent(self, event):
@@ -538,6 +573,14 @@ class ImprovedSketchWidget(QWidget):
self.pan_offset += delta_local
self.update()
def keyPressEvent(self, event):
"""Handle key press events"""
if event.key() in [Qt.Key_Delete, Qt.Key_Backspace]:
# Delete selected elements
self.delete_selected_elements()
else:
super().keyPressEvent(event)
# Private Helper Methods
@@ -546,19 +589,40 @@ class ImprovedSketchWidget(QWidget):
logger.debug(f"Left click at local pos: {pos}, mode: {self.current_mode}")
logger.debug(f"Line buffer state: {[str(p) if p else None for p in self.line_buffer]}")
# Check if we're starting a drag operation on a point
# Handle both None and SketchMode.NONE as drag mode
# Handle selection when in NONE mode (default selection behavior)
if self.current_mode == SketchMode.NONE or self.current_mode is None:
# Check if we clicked on an element for selection
point = self.sketch.get_point_near(pos, self.snap_settings.snap_distance)
logger.debug(f"Found point near click: {point}")
if point:
line = self.sketch.get_line_near(pos, 5.0)
# Check if we're starting a drag operation on a point
if point and not self.selection_rect_start:
logger.debug(f"Starting drag of point: {point}")
self._start_point_drag(point, pos)
return
else:
# No point found to drag in NONE mode - make sure no drawing happens
logger.debug("No point found for dragging in NONE mode, ignoring click")
return
# Handle selection if not dragging
if not self.dragging_point:
if point or line:
# Toggle element selection
if point:
if point in self.selected_elements:
self.selected_elements.remove(point)
else:
self.selected_elements.append(point)
elif line:
if line in self.selected_elements:
self.selected_elements.remove(line)
else:
self.selected_elements.append(line)
self.update()
return
else:
# Start rectangle selection
self.selection_rect_start = pos
self.selection_rect_end = pos
self.update()
return
# Handle drawing modes
if self.current_mode == SketchMode.LINE:
@@ -578,19 +642,86 @@ class ImprovedSketchWidget(QWidget):
elif self.current_mode == SketchMode.DISTANCE:
self._handle_distance_constraint(pos)
def _handle_right_click(self, pos: QPoint):
"""Handle right mouse button click (cancels current operation and exits mode)"""
logger.debug(f"Right click at pos: {pos}, current mode: {self.current_mode}")
def _perform_rectangle_selection(self):
"""Select elements within the rectangle"""
if not self.selection_rect_start or not self.selection_rect_end:
return
# Get the rectangle bounds
min_x = min(self.selection_rect_start.x(), self.selection_rect_end.x())
max_x = max(self.selection_rect_start.x(), self.selection_rect_end.x())
min_y = min(self.selection_rect_start.y(), self.selection_rect_end.y())
max_y = max(self.selection_rect_start.y(), self.selection_rect_end.y())
# Reset any interaction state (like line buffers, etc.)
self._reset_interaction_state()
# Select points within the rectangle
for point in self.sketch.points:
if min_x <= point.x <= max_x and min_y <= point.y <= max_y:
if point not in self.selected_elements:
self.selected_elements.append(point)
# Select lines where both endpoints are within the rectangle
for line in self.sketch.lines:
start_in = (min_x <= line.start.x <= max_x and min_y <= line.start.y <= max_y)
end_in = (min_x <= line.end.x <= max_x and min_y <= line.end.y <= max_y)
if start_in and end_in:
if line not in self.selected_elements:
self.selected_elements.append(line)
def delete_selected_elements(self):
"""Delete all currently selected elements"""
if not self.selected_elements:
return
# Separate points and lines
points_to_delete = [elem for elem in self.selected_elements if isinstance(elem, Point2D)]
lines_to_delete = [elem for elem in self.selected_elements if isinstance(elem, Line2D)]
# Force mode to NONE to enable dragging/selection
self.current_mode = SketchMode.NONE
logger.info(f"Right-click: Mode reset to NONE")
# Delete lines first (to avoid issues with points being used by lines)
for line in lines_to_delete:
if line in self.sketch.lines:
# Remove from solver
if line.handle:
try:
self.sketch.remove_entity(line.handle)
except Exception as e:
logger.warning(f"Failed to remove line from solver: {e}")
# Remove from sketch
self.sketch.lines.remove(line)
# Delete points
for point in points_to_delete:
# Check if point is used by any remaining lines
point_in_use = any(
line.start == point or line.end == point
for line in self.sketch.lines
)
if not point_in_use and point in self.sketch.points:
# Remove from solver
if point.handle:
try:
self.sketch.remove_entity(point.handle)
except Exception as e:
logger.warning(f"Failed to remove point from solver: {e}")
# Remove from sketch
self.sketch.points.remove(point)
# Clear selection
self.selected_elements.clear()
# Emit signal to inform main app that constraint/drawing mode was canceled
self.constraint_applied.emit()
# Run solver to update constraints
try:
result = self.sketch.solve_system()
if result == ResultFlag.OKAY:
logger.debug("Solver succeeded after element deletion")
else:
logger.warning(f"Solver failed after element deletion: {result}")
except Exception as e:
logger.error(f"Solver error after element deletion: {e}")
# Emit signals
self.sketch_modified.emit()
self.update()
def _handle_line_creation(self, pos: QPoint):
"""Handle line creation mode"""
@@ -619,6 +750,14 @@ class ImprovedSketchWidget(QWidget):
end_point = Point2D(snapped_pos.x(), snapped_pos.y(), self.is_construction_mode)
self.sketch.add_point(end_point)
# Check if the points are identical (would create invalid line)
if self.line_buffer[0] == end_point:
logger.error("Line start and end points cannot be identical")
# Reset the buffer to allow user to try again
self.line_buffer = [None, None]
self.dynamic_end_point = None
return
# Create line
line = Line2D(self.line_buffer[0], end_point, self.is_construction_mode)
self.sketch.add_line(line)
@@ -812,6 +951,23 @@ class ImprovedSketchWidget(QWidget):
logger.warning(f"Distance constraint failed: {result}")
except Exception as e:
logger.error(f"Failed to apply distance constraint: {e}")
else:
# If no line found, show a message to the user
logger.debug("No line found near cursor for distance constraint")
def _handle_right_click(self, pos: QPoint):
"""Handle right mouse button click (cancels current operation and exits mode)"""
logger.debug(f"Right click at pos: {pos}, current mode: {self.current_mode}")
# Reset any interaction state (like line buffers, etc.)
self._reset_interaction_state()
# Force mode to NONE to enable dragging/selection
self.current_mode = SketchMode.NONE
logger.info(f"Right-click: Mode reset to NONE")
# Emit signal to inform main app that constraint/drawing mode was canceled
self.constraint_applied.emit()
def _update_hover_state(self, pos: QPoint):
"""Update which elements are being hovered and detect snap points"""
@@ -904,6 +1060,8 @@ class ImprovedSketchWidget(QWidget):
self.constraint_buffer = [None, None]
self.dynamic_end_point = None
self.selected_elements.clear()
self.selection_rect_start = None
self.selection_rect_end = None
def _viewport_to_local(self, viewport_pos: QPoint) -> QPoint:
"""Convert viewport coordinates to local sketch coordinates
@@ -1009,8 +1167,13 @@ class ImprovedSketchWidget(QWidget):
self.render_settings.normal_pen_width / self.zoom_factor)
radius = 3 / self.zoom_factor
# Special highlighting for selected points
if point in self.selected_elements:
pen = QPen(QColor(255, 255, 0), # Yellow
(self.render_settings.highlight_pen_width + 2) / self.zoom_factor)
radius *= 1.5 # Make selected points larger
# Special highlighting for dragged points
if point == self.dragging_point:
elif point == self.dragging_point:
pen = QPen(QColor(255, 165, 0),
(self.render_settings.highlight_pen_width + 1) / self.zoom_factor) # Orange
radius *= 1.3 # Make dragged points slightly larger
@@ -1020,6 +1183,7 @@ class ImprovedSketchWidget(QWidget):
self.render_settings.highlight_pen_width / self.zoom_factor)
painter.setPen(pen)
painter.setBrush(Qt.NoBrush if point not in self.selected_elements else QColor(255, 255, 0, 100))
painter.drawEllipse(QPointF(point.x, point.y), radius, radius)
def _draw_line(self, painter: QPainter, line: Line2D):
@@ -1032,8 +1196,12 @@ class ImprovedSketchWidget(QWidget):
pen = QPen(self.render_settings.normal_color,
self.render_settings.normal_pen_width / self.zoom_factor)
# Special highlighting for selected lines
if line in self.selected_elements:
pen = QPen(QColor(255, 255, 0), # Yellow
(self.render_settings.highlight_pen_width + 2) / self.zoom_factor)
# Highlight if hovered
if line == self.hovered_line:
elif line == self.hovered_line:
pen = QPen(self.render_settings.highlight_color,
self.render_settings.highlight_pen_width / self.zoom_factor)
@@ -1091,6 +1259,16 @@ class ImprovedSketchWidget(QWidget):
1.0 / self.zoom_factor, Qt.DashLine)
painter.setPen(pen)
# Draw selection rectangle
if ((self.current_mode == SketchMode.NONE or self.current_mode is None) and
self.selection_rect_start and self.selection_rect_end):
pen = QPen(QColor(255, 255, 0), 1.0 / self.zoom_factor, Qt.DashLine) # Yellow dashed
painter.setPen(pen)
painter.setBrush(QColor(255, 255, 0, 50)) # Semi-transparent yellow fill
rect = QRect(self.selection_rect_start, self.selection_rect_end)
painter.drawRect(rect)
# Dynamic line preview
if (self.current_mode == SketchMode.LINE and
self.line_buffer[0] and

62
drawing_modules/vtk_widget.py
View File

@@ -282,21 +282,57 @@ class VTKWidget(QtWidgets.QWidget):
def render_from_points_direct_with_faces(self, vertices, faces, color=(0.1, 0.2, 0.8), line_width=2, point_size=5):
"""Sketch Widget has inverted Y axiis therefore we invert y via scale here until fix"""
# Handle empty vertices or faces
if len(vertices) == 0 or len(faces) == 0:
print("Warning: No vertices or faces to render")
return
points = vtk.vtkPoints()
# Use SetData with numpy array
vtk_array = numpy_to_vtk(vertices, deep=True)
points.SetData(vtk_array)
# Validate vertices shape
if vertices.ndim != 2 or vertices.shape[1] != 3:
print(f"Warning: Invalid vertex shape {vertices.shape}. Expected Nx3.")
return
# Validate faces shape
if faces.ndim != 2 or faces.shape[1] != 3:
print(f"Warning: Invalid face shape {faces.shape}. Expected Nx3.")
return
# Use SetData with numpy array - ensure vertices are float32
try:
vertices_float = np.asarray(vertices, dtype=np.float32)
vtk_array = numpy_to_vtk(vertices_float, deep=True)
points.SetData(vtk_array)
except Exception as e:
print(f"Error converting vertices to VTK array: {e}")
# Fallback: manually insert points
for vertex in vertices:
points.InsertNextPoint(vertex[0], vertex[1], vertex[2])
# Create a vtkCellArray to store the triangles
triangles = vtk.vtkCellArray()
for face in faces:
num_vertices = len(vertices)
for i, face in enumerate(faces):
# Validate face indices
if (face[0] >= num_vertices or face[0] < 0 or
face[1] >= num_vertices or face[1] < 0 or
face[2] >= num_vertices or face[2] < 0):
print(f"Warning: Invalid face indices {face} at index {i}. Skipping face.")
continue
triangle = vtk.vtkTriangle()
triangle.GetPointIds().SetId(0, face[0])
triangle.GetPointIds().SetId(1, face[1])
triangle.GetPointIds().SetId(2, face[2])
triangle.GetPointIds().SetId(0, int(face[0]))
triangle.GetPointIds().SetId(1, int(face[1]))
triangle.GetPointIds().SetId(2, int(face[2]))
triangles.InsertNextCell(triangle)
# Check if we have any valid triangles
if triangles.GetNumberOfCells() == 0:
print("Warning: No valid triangles to render")
return
# Create a polydata object
polydata = vtk.vtkPolyData()
polydata.SetPoints(points)
@@ -309,7 +345,17 @@ class VTKWidget(QtWidgets.QWidget):
normalGenerator.ComputeCellNormalsOn()
normalGenerator.Update()
self.cell_normals = vtk_to_numpy(normalGenerator.GetOutput().GetCellData().GetNormals())
# Safely get cell normals, with fallback if they're not available
cell_normals = normalGenerator.GetOutput().GetCellData().GetNormals()
if cell_normals:
try:
self.cell_normals = vtk_to_numpy(cell_normals)
except Exception as e:
print(f"Warning: Could not convert cell normals to numpy array: {e}")
self.cell_normals = None
else:
print("Warning: No cell normals available")
self.cell_normals = None
# Create a mapper and actor
mapper = vtk.vtkPolyDataMapper()

789
main.py
View File

@@ -47,6 +47,10 @@ class ExtrudeDialog(QDialog):
self.cut_checkbox = QCheckBox('Perform Cut')
self.union_checkbox = QCheckBox('Combine')
self.rounded_checkbox = QCheckBox('Round Edges')
# Connect the "Perform Cut" checkbox to automatically check "Combine"
self.cut_checkbox.stateChanged.connect(self.on_cut_checkbox_changed)
self.seperator = create_hline()
# OK and Cancel buttons
@@ -73,6 +77,11 @@ class ExtrudeDialog(QDialog):
self.setLayout(layout)
def on_cut_checkbox_changed(self, state):
"""Automatically check 'Combine' when 'Perform Cut' is checked"""
if state == Qt.Checked:
self.union_checkbox.setChecked(True)
def get_values(self):
return self.length_input.value(), self.symmetric_checkbox.isChecked() ,self.invert_checkbox.isChecked(), self.cut_checkbox.isChecked(), self.union_checkbox.isChecked(), self.rounded_checkbox.isChecked()
@@ -134,6 +143,9 @@ class MainWindow(QMainWindow):
self.ui.pb_con_vert.clicked.connect(lambda: self.sketchWidget.set_mode(SketchMode.VERTICAL))
self.ui.pb_con_dist.clicked.connect(lambda: self.sketchWidget.set_mode(SketchMode.DISTANCE))
self.ui.pb_con_mid.clicked.connect(lambda: self.sketchWidget.set_mode(SketchMode.MIDPOINT))
# Keep the construction mode button for construction mode only
self.ui.pb_enable_construct.clicked.connect(lambda checked: self.sketchWidget.set_construction_mode(checked))
### Operations
self.ui.pb_extrdop.pressed.connect(self.send_extrude)
@@ -266,11 +278,15 @@ class MainWindow(QMainWindow):
self.sketchWidget.convert_proj_lines(sketch.proj_lines)
self.sketchWidget.update()
# CLear all selections after it has been projected
# Clear all selections after it has been projected
self.custom_3D_Widget.project_tosketch_points.clear()
self.custom_3D_Widget.project_tosketch_lines.clear()
self.custom_3D_Widget.clear_actors_projection()
self.custom_3D_Widget.clear_actors_normals()
# Reset sketch widget mode to NONE after projection to prevent line mode engagement
self.sketchWidget.set_mode(SketchMode.NONE)
self.ui.pb_linetool.setChecked(False)
def add_sketch_to_compo(self):
"""
@@ -365,7 +381,7 @@ class MainWindow(QMainWindow):
def on_flip_face(self):
self.send_command.emit("flip")
def draw_op_complete(self):
# safely disable all drawing and constraint modes
self.ui.pb_linetool.setChecked(False)
@@ -382,7 +398,13 @@ class MainWindow(QMainWindow):
self.ui.pb_con_perp.setChecked(False)
# Reset the sketch widget mode
self.sketchWidget.set_mode(None)
self.sketchWidget.set_mode(SketchMode.NONE)
# Reset construction button
self.ui.pb_enable_construct.setChecked(False)
def on_geometry_created(self, geometry):
"""Handle geometry creation from the improved sketcher."""
def on_geometry_created(self, geometry):
"""Handle geometry creation from the improved sketcher."""
@@ -406,8 +428,14 @@ class MainWindow(QMainWindow):
print(f"Constraint applied, staying in mode: {current_mode}")
def draw_mesh(self):
name = self.ui.body_list.currentItem().text()
current_item = self.ui.body_list.currentItem()
if current_item is None:
# No item selected, clear the display
self.custom_3D_Widget.clear_body_actors()
self.custom_3D_Widget.clear_actors_interactor()
return
name = current_item.text()
print("selected_for disp", name)
compo_id = self.get_activated_compo()
@@ -438,13 +466,21 @@ class MainWindow(QMainWindow):
print("obj_name", item_name)
# Check if the 'operation' key exists in the model dictionary
if 'operation' in self.model and item_name in self.model['operation']:
if self.model['operation'][item_name]['id'] == item_name:
row = self.ui.body_list.row(name) # Get the row of the current item
self.ui.body_list.takeItem(row) # Remove the item from the list widget
self.model['operation'].pop(item_name) # Remove the item from the operation dictionary
print(f"Removed operation: {item_name}")
self.custom_3D_Widget.clear_mesh()
compo_id = self.get_activated_compo()
sel_compo = self.project.timeline[compo_id]
if item_name in sel_compo.bodies:
row = self.ui.body_list.row(name) # Get the row of the current item
self.ui.body_list.takeItem(row) # Remove the item from the list widget
del sel_compo.bodies[item_name] # Remove the item from the operation dictionary
print(f"Removed operation: {item_name}")
# Clear both body actors and interactor actors
self.custom_3D_Widget.clear_body_actors()
self.custom_3D_Widget.clear_actors_interactor()
# Redraw remaining meshes
self.draw_mesh()
else:
print(f"Body '{item_name}' not found in component")
def send_extrude(self):
# Dialog input
@@ -488,6 +524,16 @@ class MainWindow(QMainWindow):
sketch.normal = normal
f = sketch.extrude(length, is_symmetric, invert, 0)
# Apply fillet/rounding if requested
if rounded:
# Apply a small fillet radius, adjust as needed
fillet_radius = min(length * 0.1, 2.0) # 10% of height or 2mm, whichever is smaller
try:
f = f.fillet(fillet_radius)
print(f"Applied fillet with radius {fillet_radius}mm")
except Exception as e:
print(f"Warning: Could not apply fillet: {e}")
# Create body element and assign known stuff
name_op = f"extrd-{name}"
@@ -524,53 +570,165 @@ class MainWindow(QMainWindow):
items = self.ui.body_list.findItems(name_op, Qt.MatchExactly)[0]
self.ui.body_list.setCurrentItem(items)
# Handle automatic cut operation if requested
if cut and len(sel_compo.bodies) > 1:
# Find the most recently created body (other than the one we just created)
body_names = list(sel_compo.bodies.keys())
if len(body_names) > 1:
# Get the last body created before this one
previous_body_name = body_names[-2] # Second to last item
previous_body = sel_compo.bodies[previous_body_name]
# Perform cut operation: previous_body - new_body (cut the previous body with the new extrusion)
try:
cut_result = previous_body.sdf_body - body.sdf_body
# Create a new body entry for the cut result
cut_name = f"cut-{previous_body_name}"
# Create new body for the cut result
cut_body = Body()
cut_body.id = cut_name
cut_body.sdf_body = cut_result
cut_body.sketch = previous_body.sketch # Keep the sketch reference
# Create new interactor for the cut result
cut_interactor = Interactor()
# Copy interactor properties from the previous body as a starting point
# This preserves the original interactor information
if hasattr(previous_body, 'interactor') and previous_body.interactor:
# Preserve the original interactor lines (these define the sketch outline)
cut_interactor.lines = previous_body.interactor.lines
cut_interactor.invert = previous_body.interactor.invert
# Determine height from previous body for consistency
prev_height = 50.0 # Default height
if hasattr(previous_body.interactor, 'edges') and previous_body.interactor.edges:
# Try to determine height from existing edges
if len(previous_body.interactor.edges) > 0:
edge = previous_body.interactor.edges[0]
if len(edge) == 2 and len(edge[0]) == 3 and len(edge[1]) == 3:
prev_height = abs(edge[1][2] - edge[0][2])
# Generate new interactor mesh for the cut result using the same parameters
if cut_interactor.invert:
cut_edges = interactor_mesh.generate_mesh(cut_interactor.lines, 0, -prev_height)
else:
cut_edges = interactor_mesh.generate_mesh(cut_interactor.lines, 0, prev_height)
cut_interactor.edges = cut_edges
# Copy offset vector
if hasattr(previous_body.interactor, 'offset_vector'):
cut_interactor.offset_vector = previous_body.interactor.offset_vector
else:
cut_interactor.offset_vector = [0, 0, 0]
else:
# Fallback: create basic interactor
cut_interactor.lines = []
cut_interactor.invert = False
cut_interactor.edges = []
cut_interactor.offset_vector = [0, 0, 0]
cut_body.interactor = cut_interactor
# Add cut body to component
sel_compo.bodies[cut_name] = cut_body
# Add to UI
self.ui.body_list.addItem(cut_name)
cut_items = self.ui.body_list.findItems(cut_name, Qt.MatchExactly)
if cut_items:
self.ui.body_list.setCurrentItem(cut_items[-1])
# Load the interactor mesh for the cut result BEFORE cleaning up
self.custom_3D_Widget.load_interactor_mesh(cut_edges, cut_interactor.offset_vector)
# Hide the original bodies that were used in the cut operation
# Find and remove the items from the UI list
items_to_remove = []
for i in range(self.ui.body_list.count()):
item = self.ui.body_list.item(i)
if item and item.text() in [previous_body_name, name_op]:
items_to_remove.append(item)
# Actually remove items from UI
for item in items_to_remove:
row = self.ui.body_list.row(item)
self.ui.body_list.takeItem(row)
# Remove the original bodies from the component
if previous_body_name in sel_compo.bodies:
del sel_compo.bodies[previous_body_name]
if name_op in sel_compo.bodies:
del sel_compo.bodies[name_op]
# Clear the VTK widget and redraw with the cut result only
self.custom_3D_Widget.clear_body_actors()
# Don't clear interactor actors yet, as we want to show the new interactor mesh
print(f"Performed automatic cut: {previous_body_name} - {name_op} = {cut_name}")
except Exception as e:
print(f"Error performing automatic cut operation: {e}")
else:
print("Not enough bodies for cut operation")
elif cut:
print("Perform cut was checked, but no other bodies exist to cut with")
self.draw_mesh()
def send_cut(self):
"""name = self.ui.body_list.currentItem().text()
points = self.model['operation'][name]['sdf_object']
sel_compo = self.project.timeline[self.get_activated_compo()]
points = sel_compo.bodies[].
self.list_selected.append(points)"""
"""Perform a cut operation using SDF difference"""
selected = self.ui.body_list.currentItem()
if not selected:
print("No body selected for cut operation")
return
name = selected.text()
sel_compo = self.project.timeline[self.get_activated_compo()]
# print(sel_compo)
body = sel_compo.bodies[name]
# print(sketch)
self.list_selected.append(body.sdf_body)
if len(self.list_selected) == 2:
f = difference(self.list_selected[0], self.list_selected[1]) # equivalent
# Use the SDF3 class's __sub__ operator for difference operation
try:
# First body is the base, second is the tool to cut with
base_body = self.list_selected[0]
tool_body = self.list_selected[1]
f = base_body - tool_body # This uses the __sub__ operator
element = {
'id': name,
'type': 'cut',
'sdf_object': f,
}
# Create body element and assign known stuff
name_op = f"cut-{name}"
# Create body element and assign known stuff
name_op = f"cut-{name}"
body = Body()
body.id = name_op
body.sdf_body = f
body = Body()
body.id = name_op
body.sdf_body = f
## Add to component
sel_compo.bodies[name_op] = body
## Add to component
sel_compo.bodies[name_op] = body
self.ui.body_list.addItem(name_op)
items = self.ui.body_list.findItems(name_op, Qt.MatchExactly)
self.ui.body_list.setCurrentItem(items[-1])
self.custom_3D_Widget.clear_body_actors()
self.draw_mesh()
self.ui.body_list.addItem(name_op)
items = self.ui.body_list.findItems(name_op, Qt.MatchExactly)
if items:
self.ui.body_list.setCurrentItem(items[-1])
self.custom_3D_Widget.clear_body_actors()
self.draw_mesh()
# Clear the selection list for next operation
self.list_selected.clear()
except Exception as e:
print(f"Error performing cut operation: {e}")
self.list_selected.clear()
elif len(self.list_selected) > 2:
self.list_selected.clear()
print("Too many bodies selected. Please select exactly two bodies.")
else:
print("mindestens 2!")
print("Please select two bodies to perform cut operation. Currently selected: ", len(self.list_selected))
def load_and_render(self, file):
self.custom_3D_Widget.load_stl(file)
@@ -722,6 +880,94 @@ class Sketch:
print("p2", p2)
return math.sqrt((p1[0] - p2[0]) ** 2 + (p1[1] - p2[1]) ** 2)
def convert_geometry_for_sdf(self, sketch):
"""Convert sketch geometry (points, lines, circles) to SDF polygon points"""
import math
points_for_sdf = []
# Keep track of points that are part of circles to avoid adding them as standalone points
circle_centers = []
# Handle circles by converting them to separate polygons
circle_polygons = []
if hasattr(sketch, 'circles') and sketch.circles:
for circle in sketch.circles:
if not circle.is_helper:
# Convert circle to polygon approximation
num_segments = 32 # Number of segments for circle approximation
center_x, center_y = circle.center.x, circle.center.y
radius = circle.radius
circle_points_list = []
for i in range(num_segments):
angle = 2 * math.pi * i / num_segments
x = center_x + radius * math.cos(angle)
y = center_y + radius * math.sin(angle)
circle_points_list.append((x, y))
# Close the circle by adding the first point at the end
if circle_points_list:
circle_points_list.append(circle_points_list[0])
circle_polygons.append(circle_points_list)
# Keep track of circle centers to avoid adding them as standalone points
circle_centers.append(circle.center)
# Handle lines by creating ordered polygons from connected line segments
rectangle_polygons = []
if hasattr(sketch, 'lines') and sketch.lines:
non_helper_lines = [line for line in sketch.lines if not line.is_helper]
if non_helper_lines:
# Group lines into separate connected components (separate polygons)
grouped_lines = self._group_connected_lines(non_helper_lines)
# For each group of connected lines, trace the outline
for i, group in enumerate(grouped_lines):
ordered_points = self._trace_connected_lines(group)
rectangle_polygons.append(ordered_points)
# Combine polygons with proper separation
# Each polygon needs to be closed and separated from others
all_polygons = rectangle_polygons + circle_polygons
for i, polygon in enumerate(all_polygons):
points_for_sdf.extend(polygon)
# Add a small gap between polygons if not the last one
if i < len(all_polygons) - 1:
# Add a duplicate point to separate polygons
if polygon:
points_for_sdf.append(polygon[-1])
# Handle individual points (if any)
if hasattr(sketch, 'points') and sketch.points:
for point in sketch.points:
if hasattr(point, 'is_helper') and not point.is_helper:
# Only add standalone points (not already part of lines/circles)
is_standalone = True
# Check if point is part of any line
if hasattr(sketch, 'lines'):
for line in sketch.lines:
if self._points_equal(line.start, point) or self._points_equal(line.end, point):
is_standalone = False
break
# Check if point is center of any circle
if hasattr(sketch, 'circles'):
for circle in sketch.circles:
if self._points_equal(circle.center, point):
is_standalone = False
break
if is_standalone:
points_for_sdf.append((point.x, point.y))
self.sdf_points = points_for_sdf
print(f"Generated SDF points: {len(points_for_sdf)} points")
if points_for_sdf:
print(f"First point: {points_for_sdf[0]}, Last point: {points_for_sdf[-1]}")
def convert_points_for_sdf(self, points):
points_for_sdf = []
for point in points:
@@ -736,115 +982,136 @@ class Sketch:
self.sdf_points = points_for_sdf
def convert_geometry_for_sdf(self, sketch):
"""Convert sketch geometry (points, lines, circles) to SDF polygon points"""
import math
points_for_sdf = []
# Handle circles by converting them to polygons
if hasattr(sketch, 'circles') and sketch.circles:
for circle in sketch.circles:
if not circle.is_helper:
# Convert circle to polygon approximation
num_segments = 32 # Number of segments for circle approximation
center_x, center_y = circle.center.x, circle.center.y
radius = circle.radius
# Handle individual points (if any)
if hasattr(sketch, 'points') and sketch.points:
# Create a set of all points that are already part of lines or circles
used_points = set()
# Add line endpoint points
if hasattr(sketch, 'lines'):
for line in sketch.lines:
used_points.add(line.start)
used_points.add(line.end)
# Add circle points (both center and perimeter points)
if hasattr(sketch, 'circles'):
for circle in sketch.circles:
used_points.add(circle.center)
# Add perimeter points (approximated)
num_segments = 32
for i in range(num_segments):
angle = 2 * math.pi * i / num_segments
x = center_x + radius * math.cos(angle)
y = center_y + radius * math.sin(angle)
points_for_sdf.append((x, y))
# Handle lines by creating ordered polygon from connected line segments
if hasattr(sketch, 'lines') and sketch.lines:
non_helper_lines = [line for line in sketch.lines if not line.is_helper]
if non_helper_lines:
# For connected shapes like rectangles, we need to trace the outline
# to avoid duplicate corner points
ordered_points = self._trace_connected_lines(non_helper_lines)
points_for_sdf.extend(ordered_points)
# Handle individual points (if any)
if hasattr(sketch, 'points') and sketch.points:
x = circle.center.x + circle.radius * math.cos(angle)
y = circle.center.y + circle.radius * math.sin(angle)
# We don't add perimeter points to used_points since they're not Point2D objects
# Add standalone points that are not part of any geometry
for point in sketch.points:
if hasattr(point, 'is_helper') and not point.is_helper:
# Only add standalone points (not already part of lines/circles)
is_standalone = True
# Check if point is part of any line
if hasattr(sketch, 'lines'):
for line in sketch.lines:
if point == line.start or point == line.end:
is_standalone = False
break
# Check if point is center of any circle
if hasattr(sketch, 'circles'):
for circle in sketch.circles:
if point == circle.center:
is_standalone = False
break
if is_standalone:
if point not in used_points:
points_for_sdf.append((point.x, point.y))
self.sdf_points = points_for_sdf
print(f"Generated SDF points: {len(points_for_sdf)} points")
if points_for_sdf:
print(f"First point: {points_for_sdf[0]}, Last point: {points_for_sdf[-1]}")
def _trace_connected_lines(self, lines):
"""Trace connected line segments to create ordered polygon points without duplicates"""
def _group_connected_lines(self, lines):
"""Group lines into connected components (separate polygons)"""
if not lines:
return []
# Start with the first line
current_line = lines[0]
# Keep Y coordinate as-is to match sketcher orientation
ordered_points = [(current_line.start.x, current_line.start.y)]
used_lines = {current_line}
current_point = current_line.end
while len(used_lines) < len(lines):
# Add the current transition point keeping Y coordinate as-is
point_tuple = (current_point.x, current_point.y)
if not ordered_points or ordered_points[-1] != point_tuple:
ordered_points.append(point_tuple)
# Find the next connected line
next_line = None
for line in lines:
if line in used_lines:
continue
# Check if this line connects to current_point
if self._points_equal(line.start, current_point):
next_line = line
current_point = line.end
break
elif self._points_equal(line.end, current_point):
next_line = line
current_point = line.start
break
if next_line is None:
# No more connected lines, might be separate line segments
break
used_lines.add(next_line)
groups = []
used_lines = set()
# If we didn't use all lines, add remaining line endpoints keeping Y coordinate as-is
for line in lines:
if line not in used_lines:
start_point = (line.start.x, line.start.y)
end_point = (line.end.x, line.end.y)
if start_point not in ordered_points:
ordered_points.append(start_point)
if end_point not in ordered_points:
ordered_points.append(end_point)
# Start a new group with this line
group = [line]
used_lines.add(line)
current_group_lines = {line}
# Find all connected lines
changed = True
while changed:
changed = False
for other_line in lines:
if other_line not in used_lines:
# Check if this line connects to any line in the current group
for group_line in current_group_lines:
if (self._points_equal(group_line.start, other_line.start) or
self._points_equal(group_line.start, other_line.end) or
self._points_equal(group_line.end, other_line.start) or
self._points_equal(group_line.end, other_line.end)):
group.append(other_line)
used_lines.add(other_line)
current_group_lines.add(other_line)
changed = True
break
groups.append(group)
return ordered_points
return groups
def _trace_connected_lines(self, lines):
"""Trace connected line segments to create ordered polygon points without duplicates.
Groups lines into separate connected components and closes each polygon individually."""
if not lines:
return []
# Group lines into separate connected components (separate polygons)
grouped_lines = self._group_connected_lines(lines)
# For each group of connected lines, trace the outline and close the polygon
all_ordered_points = []
for group in grouped_lines:
if not group:
continue
# Start with the first line in the group
current_line = group[0]
# Keep Y coordinate as-is to match sketcher orientation
ordered_points = [(current_line.start.x, current_line.start.y)]
used_lines = {current_line}
current_point = current_line.end
while len(used_lines) < len(group):
# Add the current transition point keeping Y coordinate as-is
point_tuple = (current_point.x, current_point.y)
if not ordered_points or ordered_points[-1] != point_tuple:
ordered_points.append(point_tuple)
# Find the next connected line
next_line = None
for line in group:
if line in used_lines:
continue
# Check if this line connects to current_point
if self._points_equal(line.start, current_point):
next_line = line
current_point = line.end
break
elif self._points_equal(line.end, current_point):
next_line = line
current_point = line.start
break
if next_line is None:
# No more connected lines in this group
break
used_lines.add(next_line)
# Close this individual polygon if not already closed
if len(ordered_points) > 2:
first_point = ordered_points[0]
last_point = ordered_points[-1]
# Check if first and last points are the same (closed)
if abs(first_point[0] - last_point[0]) > 1e-6 or abs(first_point[1] - last_point[1]) > 1e-6:
# Not closed, add the first point at the end to close it
ordered_points.append(first_point)
# Add this polygon's points to the overall list
all_ordered_points.extend(ordered_points)
return all_ordered_points
def _points_equal(self, p1, p2, tolerance=1e-6):
"""Check if two points are equal within tolerance"""
@@ -863,13 +1130,65 @@ class Sketch:
"""
Extrude a 2D shape into 3D, orient it along the normal, and position it relative to the centroid.
"""
# Handle zero height case
if height <= 0:
print("Warning: Extrude height must be positive. Using default height of 1.0")
height = 1.0
# Normalize the normal vector
normal = np.array(self.normal)
normal = normal / np.linalg.norm(self.normal)
# Normalize the normal vector, with fallback to default if invalid
try:
normal = np.array(self.normal, dtype=float)
norm = np.linalg.norm(normal)
if norm > 1e-10: # Check if normal is not zero
normal = normal / norm
else:
print("Warning: Invalid normal vector. Using default Z-axis normal.")
normal = np.array([0, 0, 1])
except Exception as e:
print(f"Warning: Error processing normal vector: {e}. Using default Z-axis normal.")
normal = np.array([0, 0, 1])
# Create the 2D shape
f = polygon(self.sdf_points)
try:
# Handle multiple separate polygons by creating union of shapes
if hasattr(self, 'sdf_points') and self.sdf_points:
# Split points into separate polygons (closed shapes)
polygons = self._split_into_polygons(self.sdf_points)
if len(polygons) == 1:
# Single polygon case
f = polygon(polygons[0])
elif len(polygons) > 1:
# Multiple polygons case - create union
shapes = []
for poly_points in polygons:
if len(poly_points) >= 3: # Need at least 3 points for a valid polygon
shape = polygon(poly_points)
shapes.append(shape)
# Union all shapes together
if shapes:
f = shapes[0]
for shape in shapes[1:]:
f = f | shape # Union operation
else:
# Fallback to a simple rectangle if no valid polygons
fallback_points = [(-10, -10), (10, -10), (10, 10), (-10, 10)]
f = polygon(fallback_points)
else:
# No valid polygons, fallback to a simple rectangle
fallback_points = [(-10, -10), (10, -10), (10, 10), (-10, 10)]
f = polygon(fallback_points)
else:
# Fallback to a simple rectangle if no points
fallback_points = [(-10, -10), (10, -10), (10, 10), (-10, 10)]
f = polygon(fallback_points)
except Exception as e:
print(f"Error creating polygon: {e}")
# Fallback to a simple rectangle if points are invalid
fallback_points = [(-10, -10), (10, -10), (10, 10), (-10, 10)]
f = polygon(fallback_points)
# Extrude the shape along the Z-axis
f = f.extrude(height)
@@ -877,34 +1196,174 @@ class Sketch:
# Center the shape along its extrusion axis
f = f.translate((0, 0, height / 2))
# Orient the shape along the normal vector
f = f.orient(normal)
# Orient the shape along the normal vector (only if normal is not the default Z-axis)
default_z = np.array([0, 0, 1])
if not np.allclose(normal, default_z, atol=1e-10):
try:
f = f.orient(normal)
except Exception as e:
print(f"Warning: Failed to orient shape: {e}. Shape will remain in default orientation.")
offset_vector = self.vector_to_centroid(None, self.origin, normal)
# Adjust the offset vector by subtracting the inset distance along the normal direction
adjusted_offset = offset_vector - (normal * height)
# Calculate offset vector
try:
offset_vector = self.vector_to_centroid(None, self.origin, normal)
except Exception as e:
print(f"Warning: Error calculating offset vector: {e}. Using zero offset.")
offset_vector = np.array([0, 0, 0])
# Apply translation based on invert flag
if invert:
# Translate the shape along the adjusted offset vector
# Adjust the offset vector by subtracting the extrusion height along the normal direction
adjusted_offset = offset_vector - (normal * height)
f = f.translate(adjusted_offset)
else:
f = f.translate(offset_vector)
# If offset_length is provided, adjust the offset_vector
if offset_length is not None:
# Check if offset_vector is not a zero vector
offset_vector_magnitude = np.linalg.norm(offset_vector)
if offset_vector_magnitude > 1e-10: # Use a small threshold to avoid floating-point issues
# Normalize the offset vector
offset_vector_norm = offset_vector / offset_vector_magnitude
# Scale the normalized vector by the desired length
offset_vector = offset_vector_norm * offset_length
f = f.translate(offset_vector)
else:
print("Warning: Offset vector has zero magnitude. Using original vector.")
# Translate the shape along the adjusted offset vector
try:
# Check if offset_vector is not a zero vector
offset_vector_magnitude = np.linalg.norm(offset_vector)
if offset_vector_magnitude > 1e-10: # Use a small threshold to avoid floating-point issues
# Normalize the offset vector
offset_vector_norm = offset_vector / offset_vector_magnitude
# Scale the normalized vector by the desired length
scaled_offset = offset_vector_norm * offset_length
f = f.translate(scaled_offset)
else:
print("Warning: Offset vector has zero magnitude. Using original vector.")
except Exception as e:
print(f"Warning: Error applying offset length: {e}")
return f
def _split_into_polygons(self, points):
"""Split a list of points into separate closed polygons"""
if not points:
return []
polygons = []
current_polygon = []
for point in points:
current_polygon.append(point)
# Check if this point closes the current polygon
# A polygon is closed when the last point equals the first point
if len(current_polygon) > 2 and current_polygon[0] == current_polygon[-1]:
# This polygon is closed, add it to the list
polygons.append(current_polygon)
current_polygon = []
# If there's an incomplete polygon left, add it anyway
if current_polygon:
polygons.append(current_polygon)
return polygons
def _trace_connected_lines(self, lines):
"""Trace connected line segments to create ordered polygon points without duplicates"""
if not lines:
return []
# Group lines into separate connected components (separate polygons)
grouped_lines = self._group_connected_lines(lines)
# For each group of connected lines, trace the outline and close the polygon
all_ordered_points = []
for group in grouped_lines:
if not group:
continue
# Start with the first line in the group
current_line = group[0]
# Keep Y coordinate as-is to match sketcher orientation
ordered_points = [(current_line.start.x, current_line.start.y)]
used_lines = {current_line}
current_point = current_line.end
while len(used_lines) < len(group):
# Add the current transition point keeping Y coordinate as-is
point_tuple = (current_point.x, current_point.y)
if not ordered_points or ordered_points[-1] != point_tuple:
ordered_points.append(point_tuple)
# Find the next connected line
next_line = None
for line in group:
if line in used_lines:
continue
# Check if this line connects to current_point
if self._points_equal(line.start, current_point):
next_line = line
current_point = line.end
break
elif self._points_equal(line.end, current_point):
next_line = line
current_point = line.start
break
if next_line is None:
# No more connected lines in this group
break
used_lines.add(next_line)
# Close this individual polygon if not already closed
if len(ordered_points) > 2:
first_point = ordered_points[0]
last_point = ordered_points[-1]
# Check if first and last points are the same (closed)
if abs(first_point[0] - last_point[0]) > 1e-6 or abs(first_point[1] - last_point[1]) > 1e-6:
# Not closed, add the first point at the end to close it
ordered_points.append(first_point)
# Add this polygon's points to the overall list
all_ordered_points.extend(ordered_points)
return all_ordered_points
def _group_connected_lines(self, lines):
"""Group lines into connected components (separate polygons)"""
if not lines:
return []
groups = []
used_lines = set()
for line in lines:
if line not in used_lines:
# Start a new group with this line
group = [line]
used_lines.add(line)
current_group_lines = {line}
# Find all connected lines
changed = True
while changed:
changed = False
for other_line in lines:
if other_line not in used_lines:
# Check if this line connects to any line in the current group
for group_line in current_group_lines:
if (self._points_equal(group_line.start, other_line.start) or
self._points_equal(group_line.start, other_line.end) or
self._points_equal(group_line.end, other_line.start) or
self._points_equal(group_line.end, other_line.end)):
group.append(other_line)
used_lines.add(other_line)
current_group_lines.add(other_line)
changed = True
break
groups.append(group)
return groups
def _points_equal(self, p1, p2, tolerance=1e-6):
"""Check if two points are equal within tolerance"""
return abs(p1.x - p2.x) < tolerance and abs(p1.y - p2.y) < tolerance
@dataclass
class Interactor:
@@ -933,7 +1392,19 @@ class Interactor:
center_to_centroid = np.array(centroid) - np.array(shape_center)
# Project this vector onto the normal to get the required translation along the normal
translation_along_normal = np.dot(center_to_centroid, normal) * normal
# Handle case where normal might be invalid or zero
try:
normal_array = np.array(normal)
if np.linalg.norm(normal_array) > 1e-10: # Check if normal is not zero
translation_along_normal = np.dot(center_to_centroid, normal_array) * normal_array
else:
# Use default Z-axis if normal is zero
default_normal = np.array([0, 0, 1])
translation_along_normal = np.dot(center_to_centroid, default_normal) * default_normal
except Exception as e:
print(f"Warning: Error in normal computation: {e}. Using default Z-axis.")
default_normal = np.array([0, 0, 1])
translation_along_normal = np.dot(center_to_centroid, default_normal) * default_normal
return translation_along_normal