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2d drawing test

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This commit is contained in:
bklronin 2024-05-11 22:36:06 +02:00
parent fdc3948f8c
commit 24f569ebc1
1 changed files with 20 additions and 14 deletions
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34
modules/gl_widget.py
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@ -15,6 +15,12 @@ class OpenGLWidget(QOpenGLWidget):
self.yRot = 0 self.yRot = 0
self.zoom = -10.0 self.zoom = -10.0
self.sketch = [] self.sketch = []
self.gl_width = self.width() / 1000
self.gl_height = self.height() / 1000
print(self.gl_height)
print(self.gl_width)
def map_value_to_range(self, value, value_min: int = 0, value_max: int= 1920, range_min=-1, range_max=1): 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. Maps a value from one range to another.
@ -56,6 +62,8 @@ class OpenGLWidget(QOpenGLWidget):
glMatrixMode(GL_PROJECTION) glMatrixMode(GL_PROJECTION)
glLoadIdentity() glLoadIdentity()
aspect = width / float(height) aspect = width / float(height)
self.gl_width = self.width() / 1000
self.gl_height = self.height() / 1000
gluPerspective(45.0, aspect, 1.0, 100.0) gluPerspective(45.0, aspect, 1.0, 100.0)
glMatrixMode(GL_MODELVIEW) glMatrixMode(GL_MODELVIEW)
@ -82,16 +90,16 @@ class OpenGLWidget(QOpenGLWidget):
# Draw vertical lines # Draw vertical lines
glBegin(GL_LINES) glBegin(GL_LINES)
for x in range(0, self.width(), 20): for x in range(0, self.width(), 20):
x_ndc = self.map_value_to_range(x, 0, value_max=self.width(), range_min=-2, range_max=2) x_ndc = self.map_value_to_range(x, 0, value_max=self.width(), range_min=-self.gl_width, range_max=self.gl_width)
glVertex2f(x_ndc, -1) # Start from y = -1 glVertex2f(x_ndc, -self.gl_height) # Start from y = -1
glVertex2f(x_ndc, 1) # End at y = 1 glVertex2f(x_ndc, self.gl_height) # End at y = 1
# Draw horizontal lines # Draw horizontal lines
for y in range(0, self.height(), 20): 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) y_ndc = self.map_value_to_range(y, 0, value_max=self.height(), range_min=-self.gl_height, range_max=self.gl_height)
glVertex2f(-2, y_ndc) # Start from x = -1 glVertex2f(-self.gl_width, y_ndc) # Start from x = -1
glVertex2f(2, y_ndc) # End at x = 1 glVertex2f(self.gl_width, y_ndc) # End at x = 1
glEnd() glEnd()
@ -116,8 +124,6 @@ class OpenGLWidget(QOpenGLWidget):
glVertex2f(x2, y2) glVertex2f(x2, y2)
glEnd() glEnd()
def draw_lines_between_points(self, points): def draw_lines_between_points(self, points):
glBegin(GL_LINES) glBegin(GL_LINES)
glColor3f(1.0, 1.0, 1.0) # Set line color to white glColor3f(1.0, 1.0, 1.0) # Set line color to white
@ -148,10 +154,10 @@ class OpenGLWidget(QOpenGLWidget):
mouse_pos = event.pos() mouse_pos = event.pos()
# Map mouse position to normalized device coordinates # 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_x = self.map_value_to_range(mouse_pos.x(), 0, value_max=self.width(),range_min=-self.gl_width, range_max=self.gl_width)
normalized_y = self.map_value_to_range(mouse_pos.y(), 0, value_max=self.height(),range_min=-1, range_max=1) normalized_y = self.map_value_to_range(mouse_pos.y(), 0, value_max=self.height(),range_min=-self.gl_height, range_max=self.gl_height)
self.startPos = [normalized_x, -normalized_y] self.startPos = [normalized_x * -self.zoom, -normalized_y * -self.zoom]
# Now you have the mouse position in normalized coordinates # Now you have the mouse position in normalized coordinates
print("Right mouse button pressed - Mouse position (normalized):", normalized_x, normalized_y) print("Right mouse button pressed - Mouse position (normalized):", normalized_x, normalized_y)
@ -160,10 +166,10 @@ class OpenGLWidget(QOpenGLWidget):
mouse_pos = event.pos() mouse_pos = event.pos()
# Map mouse position to normalized device coordinates # 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_x = self.map_value_to_range(mouse_pos.x(), 0, value_max=self.width(), range_min=-self.gl_width, range_max=self.gl_width)
normalized_y = self.map_value_to_range(mouse_pos.y(), 0, value_max=self.height(), range_min=-1, range_max=1) normalized_y = self.map_value_to_range(mouse_pos.y(), 0, value_max=self.height(), range_min=-self.gl_height, range_max=self.gl_height)
self.endPos = [normalized_x, -normalized_y] self.endPos = [normalized_x * -self.zoom, -normalized_y * -self.zoom]
self.add_to_sketch(self.startPos) self.add_to_sketch(self.startPos)
self.add_to_sketch(self.endPos) self.add_to_sketch(self.endPos)