while not glfw.window_should_close(window):
# Using GLFW to check for input events
glfw.poll_events()
# Filling or not the shapes depending on the controller state
if (controller.fillPolygon):
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)
else:
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
# Clearing the screen in both, color and depth
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
theta = glfw.get_time()
Rx = tr.rotationX(np.pi / 3)
Ry = tr.rotationY(theta)
transform = np.matmul(Rx, Ry)
# Drawing the Cube
glUniformMatrix4fv(
glGetUniformLocation(pipeline.shaderProgram, "transform"), 1,
GL_TRUE, transform)
pipeline.drawCall(gpuCube)
# Once the drawing is rendered, buffers are swap so an uncomplete drawing is never seen.
glfw.swap_buffers(window)
# freeing GPU memory
gpuCube.clear()
glfw.terminate()
if (controller.shape == SP_TRIANGLE):
glUniformMatrix4fv(
glGetUniformLocation(pipeline.shaderProgram, "transform"), 1,
GL_TRUE, transform)
pipeline.drawCall(gpuTriangle)
elif (controller.shape == SP_QUAD):
glUniformMatrix4fv(
glGetUniformLocation(pipeline.shaderProgram, "transform"), 1,
GL_TRUE, transform)
pipeline.drawCall(gpuQuad)
elif (controller.shape == SP_CUBE):
Rx = tr.rotationX(np.pi / 3)
Ry = tr.rotationY(np.pi / 3)
transform = tr.matmul([Ry, Rx, transform])
glUniformMatrix4fv(
glGetUniformLocation(pipeline.shaderProgram, "transform"), 1,
GL_TRUE, transform)
pipeline.drawCall(gpuCube)
elif (controller.shape == SP_CIRCLE):
glUniformMatrix4fv(
glGetUniformLocation(pipeline.shaderProgram, "transform"), 1,
GL_TRUE, transform)
pipeline.drawCall(gpuCircle)
else:
# This should never happen
raise Exception()
if (controller.fillPolygon):
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)
else:
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
if controller.showAxis:
glUniformMatrix4fv(
glGetUniformLocation(mvpPipeline.shaderProgram, "model"), 1,
GL_TRUE, tr.identity())
mvpPipeline.drawCall(gpuAxis, GL_LINES)
# Moving the red car and rotating its wheels
redCarNode.transform = tr.translate(3 * np.sin(glfw.get_time()), 0,
0.5)
redWheelRotationNode = sg.findNode(redCarNode, "wheelRotation")
redWheelRotationNode.transform = tr.rotationY(-10 * glfw.get_time())
# Uncomment to print the red car position on every iteration
#print(sg.findPosition(redCarNode, "car"))
# Drawing the Car
sg.drawSceneGraphNode(redCarNode, mvpPipeline, "model")
sg.drawSceneGraphNode(blueCarNode, mvpPipeline, "model")
# Once the render is done, buffers are swapped, showing only the complete scene.
glfw.swap_buffers(window)
# freeing GPU memory
gpuAxis.clear()
redCarNode.clear()
blueCarNode.clear()