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2d drawing test

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This commit is contained in:
bklronin 2024-05-11 22:10:41 +02:00
parent 8db6743dcd
commit fdc3948f8c
1 changed files with 55 additions and 44 deletions
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99
modules/gl_widget.py
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@ -14,7 +14,7 @@ class OpenGLWidget(QOpenGLWidget):
self.xRot = 0
self.yRot = 0
self.zoom = -10.0
self.sketch = []
def map_value_to_range(self, value, value_min: int = 0, value_max: int= 1920, range_min=-1, range_max=1):
"""
Maps a value from one range to another.
@ -70,8 +70,9 @@ class OpenGLWidget(QOpenGLWidget):
# Draw the rectangle if start and end positions are defined
self.draw_area()
if self.startPos and self.endPos:
self.draw_line(self.startPos, self.endPos)
if self.sketch:
self.draw_lines_between_points(self.sketch)
def draw_area(self):
@ -81,19 +82,20 @@ class OpenGLWidget(QOpenGLWidget):
# Draw vertical lines
glBegin(GL_LINES)
for x in range(0, self.width(), 20):
x_ndc = self.map_value_to_range(x, 0, value_max=self.width(), range_min=-1, range_max=1)
x_ndc = self.map_value_to_range(x, 0, value_max=self.width(), range_min=-2, range_max=2)
glVertex2f(x_ndc, -1) # Start from y = -1
glVertex2f(x_ndc, 1) # End at y = 1
glEnd()
# Draw horizontal lines
glBegin(GL_LINES)
for y in range(0, self.height(), 20):
y_ndc = self.map_value_to_range(y, 0, value_max=self.height(),range_min=-1, range_max=1)
glVertex2f(-1, y_ndc) # Start from x = -1
glVertex2f(1, y_ndc) # End at x = 1
glVertex2f(-2, y_ndc) # Start from x = -1
glVertex2f(2, y_ndc) # End at x = 1
glEnd()
def draw_line(self, startPos, endPos):
# Get normalized mouse coordinates
print("start", startPos)
@ -114,68 +116,77 @@ class OpenGLWidget(QOpenGLWidget):
glVertex2f(x2, y2)
glEnd()
def mousePressEvent(self, event):
if event.buttons() & Qt.MouseButton.LeftButton:
# Get mouse position in widget coordinates
mouse_pos = event.pos()
# Map mouse position to normalized device coordinates
normalized_x = self.map_value_to_range(mouse_pos.x(), 0, self.width())
normalized_y = self.map_value_to_range(mouse_pos.y(), 0, self.height())
def draw_lines_between_points(self, points):
glBegin(GL_LINES)
glColor3f(1.0, 1.0, 1.0) # Set line color to white
num_points = len(points)
for i in range(num_points - 1):
x1, y1 = points[i]
x2, y2 = points[i + 1]
glVertex2f(x1, y1)
glVertex2f(x2, y2)
# Connect the last point to the first point
x1, y1 = points[num_points - 1]
x2, y2 = points[0]
glVertex2f(x1, y1)
glVertex2f(x2, y2)
glEnd()
glPointSize(8)
glBegin(GL_POINTS)
glColor3f(1.0, 0.2, 1.0) # Set dot color to white
for point in points:
glVertex2f(point[0], point[1])
glEnd()
def mousePressEvent(self, event):
if event.buttons() & Qt.MouseButton.RightButton:
# Get mouse position in widget coordinates
mouse_pos = event.pos()
# Map mouse position to normalized device coordinates
normalized_x = self.map_value_to_range(mouse_pos.x(), 0, value_max=self.width(),range_min=-1, range_max=1)
normalized_x = self.map_value_to_range(mouse_pos.x(), 0, value_max=self.width(),range_min=-2, range_max=2)
normalized_y = self.map_value_to_range(mouse_pos.y(), 0, value_max=self.height(),range_min=-1, range_max=1)
self.startPos = [normalized_x, -normalized_y]
# Now you have the mouse position in normalized coordinates
print("Right mouse button pressed - Mouse position (normalized):", normalized_x, normalized_y)
def mouseReleaseEvent(self, event):
if event.button() == Qt.MouseButton.RightButton:
mouse_pos = event.pos()
"""def mouseReleaseEvent(self, event):
print("release")
# Map mouse position to normalized device coordinates
normalized_x = self.map_value_to_range(mouse_pos.x(), 0, value_max=self.width(), range_min=-2, range_max=2)
normalized_y = self.map_value_to_range(mouse_pos.y(), 0, value_max=self.height(), range_min=-1, range_max=1)
# Get mouse position in widget coordinates
mouse_pos = event.pos()
self.endPos = [normalized_x, -normalized_y]
self.add_to_sketch(self.startPos)
self.add_to_sketch(self.endPos)
# Map mouse position to normalized device coordinates
normalized_x = self.map_value_to_range(mouse_pos.x(), 0, self.width())
normalized_y = self.map_value_to_range(mouse_pos.y(), 0, self.height())
self.update()
print("releaseonly")
# Now you have the mouse position in normalized coordinates
print("Right mouse button pressed - Mouse position (normalized):", normalized_x, normalized_y)
self.endPos = [normalized_x, normalized_y]
print(self.endPos)
# Now you have the mouse position in normalized coordinates
print("Right mouse button rel - Mouse position (normalized):", normalized_x, normalized_y)
#self.update()"""
def mouseMoveEvent(self, event):
dx = event.x() - self.lastPos.x()
dy = event.y() - self.lastPos.y()
if event.buttons() & Qt.MouseButton.LeftButton:
if event.buttons() & Qt.MouseButton.LeftButton :
self.xRot += 0.5 * dy
self.yRot += 0.5 * dx
self.update()
self.lastPos = event.pos()
self.lastPos = event.pos()
self.update()
if event.buttons() & Qt.MouseButton.RightButton:
mouse_pos = event.pos()
def add_to_sketch(self, pos):
self.sketch.append(pos)
print(self.sketch)
# Map mouse position to normalized device coordinates
normalized_x = self.map_value_to_range(mouse_pos.x(), 0, self.width())
normalized_y = self.map_value_to_range(mouse_pos.y(), 0, self.height())
self.endPos = [normalized_x, -normalized_y]
print(self.endPos)
# Now you have the mouse position in normalized coordinates
print("Right mouse button rel - Mouse position (normalized):", normalized_x, normalized_y)
self.update()
def wheelEvent(self, event):
delta = event.angleDelta().y()
self.zoom += delta / 120