Computer Graphics, Lab Assignment 7
- Start from the following code skeleton.
| import glfwfrom OpenGL.GL import * import numpy as np from OpenGL.GLU import *def render():glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) glEnable(GL_DEPTH_TEST) glMatrixMode(GL_PROJECTION) glLoadIdentity() glOrtho(-2,2, 2,2, 1,1) glMatrixMode(GL_MODELVIEW) glLoadIdentity() drawFrame()t = glfw.get_time() # blue base transformation glPushMatrix() glTranslatef(np.sin(t), 0, 0) # blue base drawing glPushMatrix() glScalef(.2, .2, .2) glColor3ub(0, 0, 255) drawBox() glPopMatrix() # red arm transformation glPushMatrix() glRotatef(t*(180/np.pi), 0, 0, 1)glTranslatef(.5, 0, .01) # red arm drawing glPushMatrix() glScalef(.5, .1, .1) glColor3ub(255, 0, 0) drawBox() glPopMatrix() |
| glPopMatrix() glPopMatrix()def drawBox():glBegin(GL_QUADS) glVertex3fv(np.array([1,1,0.])) glVertex3fv(np.array([-1,1,0.])) glVertex3fv(np.array([-1,-1,0.])) glVertex3fv(np.array([1,-1,0.])) glEnd()def drawFrame():# draw coordinate: x in red, y in green, z in blue glBegin(GL_LINES) glColor3ub(255, 0, 0) glVertex3fv(np.array([0.,0.,0.])) glVertex3fv(np.array([1.,0.,0.])) glColor3ub(0, 255, 0) glVertex3fv(np.array([0.,0.,0.])) glVertex3fv(np.array([0.,1.,0.])) glColor3ub(0, 0, 255) glVertex3fv(np.array([0.,0.,0])) glVertex3fv(np.array([0.,0.,1.])) glEnd()def main(): if not glfw.init():return window = glfw.create_window(480,480,2017123456-lab6-1, None,None) if not window: glfw.terminate() returnglfw.make_context_current(window) glfw.swap_interval(1)while not glfw.window_should_close(window): glfw.poll_events() render()glfw.swap_buffers(window) glfw.terminate()if __name__ == __main__:main() |
- Add a green arm at the end of the red arm, and rotate the green arm about its local
z axis.
- Render the green arm using drawBox().
- Also render local frames of the blue base, red arm, green arm using drawFrame().
- Expected result: Uploaded LabAssignment7-1.mp4
- Submit a single .py file [studentID]-[assignment#]-[prob#].py
- Write down a Python program to draw following triangular pyramid () by using indexed triangles representation and glDrawElements().
- Start from the code in 7-Hierarchy,Mesh slides. Make sure camera manipulation shortcuts
1, 3, 2, w work.
- Set the window title to [studentID]-[assignment#]-[prob#] and the window size to (480,480).
- Submit a single .py file [studentID]-[assignment#]-[prob#].py
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