# Using GLFW to check for input events
glfw.poll_events()
# Getting the time difference from the previous iteration
t1 = glfw.get_time()
dt = t1 - t0
t0 = t1
if glfw.get_key(window, glfw.KEY_LEFT) == glfw.PRESS:
camera_theta -= 2 * dt
if glfw.get_key(window, glfw.KEY_RIGHT) == glfw.PRESS:
camera_theta += 2 * dt
projection = tr.perspective(45, float(width) / float(height), 0.1, 100)
camX = 3 * np.sin(camera_theta)
camY = 3 * np.cos(camera_theta)
viewPos = np.array([camX, camY, 2])
view = tr.look_at(
viewPos,
np.array([0, 0, 0]),
np.array([0, 0, 1])
)
model = tr.identity()
# Clearing the screen in both, color and depth
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
camX = 10 * np.sin(camera_theta)
camY = 10 * np.cos(camera_theta)
viewPos = np.array([camX, camY, 10])
view = tr2.look_at(viewPos, np.array([0, 0, 0]), np.array([0, 0, 1]))
glUniformMatrix4fv(
glGetUniformLocation(pipeline.shaderProgram, 'view'), 1, GL_TRUE,
view)
# Setting up the projection transform
if controller.projection == PROJECTION_ORTHOGRAPHIC:
projection = tr2.ortho(-8, 8, -8, 8, 0.1, 100)
elif controller.projection == PROJECTION_FRUSTUM:
projection = tr2.frustum(-5, 5, -5, 5, 9, 100)
elif controller.projection == PROJECTION_PERSPECTIVE:
projection = tr2.perspective(60,
float(width) / float(height), 0.1,
100)
else:
raise Exception()
glUniformMatrix4fv(
glGetUniformLocation(pipeline.shaderProgram, 'projection'), 1,
GL_TRUE, projection)
# Clearing the screen in both, color and depth
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
# 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)