Exemple #1
0
def display():
    twDisplayInit(1,1,1)
    twCamera()
    sunLightSource()                       # as a light source

    twGround()
    drawSunObject()
    if DrawBlockp:
        twColor(Red,0,0)
        ObjectDrawers[DrawObjectId]()

    # we don't want lighting effects on the shadow!
    glDisable(GL_LIGHTING) 

    glPushMatrix()
    glTranslatef(*SunPos)       # STEP 1: move origin to light pos

    # project onto negative of sun's Y coordinate
    PM = projectionMatrix(-1*SunPos[1])
    glMultMatrixf(PM);          # STEP 2: flattens out the objects

    glTranslatef(*twVectorScale(SunPos,-1)) # STEP 3: translate back
    
    shadowColor = (0.5,0.5,0.5)
    twColor(shadowColor,0,0)
    ObjectDrawers[DrawObjectId]()

    glPopMatrix()

    glFlush()
    glutSwapBuffers()
Exemple #2
0
def display():
    twDisplayInit(1,1,1)
    twCamera()
    sunLightSource()                       # as a light source

    drawSunObject()
    teapotColor = (0,0.6,0)
    twColor(teapotColor,0,64)
    drawBasicTeapot()

    # we don't want lighting effects on the shadow!
    glDisable(GL_LIGHTING) 

    glPushMatrix()
    glTranslatef(*SunPos)       # STEP 1: move origin to light pos

    # project onto negative of sun's Y coordinate
    PM = projectionMatrix(-1*SunPos[1])
    glMultMatrixf(PM);          # STEP 2: flattens out the objects

    glTranslatef(*twVectorScale(SunPos,-1)) # STEP 3: translate back
    
    shadowColor = (0.5,0.5,0.5)
    glColor3fv(shadowColor)
    drawBasicTeapot()           # STEP 4: draw the object in shadow color

    glPopMatrix()

    glFlush()
    glutSwapBuffers()