Description
. Write down a Python program to draw a hierarchical model of boxes.
- Set the window title to [studentID]-[assignment#]-[prob#] and the window size to
(480,480).
- Start from the following code skeleton.
| import glfw
from 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() return glfw.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 (삼각뿔) 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
