camera.py 文件源码

def openGLPerspectiveMatrix(fovy, aspect, near, far):
    # print 'fovy:', fovy
    # print 'aspect:', aspect
    # print 'near:', near
    # print 'far:', far

    f = 1.0 / np.tan(fovy/2.0)

    # print 'f:', f

    return np.matrix([
    [f/aspect, 0, 0, 0],
    [0, f, 0, 0],
    [0, 0, (far+near)/(near-far), (2.0*near*far)/(near-far)],
    [0, 0, -1, 0]
    ], np.float32)