def changeOrientation(self, angle, axis):
"""
aktualisiere die Orientierung der Arcball rotation
@param angle: winkel um den gedreht wird
@param axis: achse um die gedreht wurde
"""
self.actOri = self.actOri * geo.rotate(angle, axis)
def rotate(self, angle, axis):
"""
rotiere die aktuelle Orientierung
@param angle: winkel der Transformation
@param axis: Achse um die gedreht wird
"""
self.rotation = self.actOri * geo.rotate(angle, axis)
def mousebuttonpressed(button, state, x, y):
""" Callback Function for Mouse-Event """
global startP, actOri, angle, doRotation, doZoom, startPoint, doTranslate, fixedPoint
r = min(WIDTH, HEIGHT) / 2.0
if button == GLUT_LEFT_BUTTON:
doZoom, doTranslate = False, False
if state == GLUT_DOWN:
doRotation = True
startP = geo.projectOnSphere(x, y, r, WIDTH, HEIGHT)
if state == GLUT_UP:
doRotation = False
actOri = actOri * geo.rotate(angle, axis)
angle = 0
def mousebuttonpressed(button, state, x, y):
""" Callback Function for Mouse-Event """
global startP, actOri, angle, doRotation, doZoom, startPoint, doTranslate, fixedPoint
r = min(WIDTH, HEIGHT) / 2.0
if button == GLUT_LEFT_BUTTON:
doZoom, doTranslate = False, False
if state == GLUT_DOWN:
doRotation = True
startP = geo.projectOnSphere(x, y, r, WIDTH, HEIGHT)
if state == GLUT_UP:
doRotation = False
actOri = actOri * geo.rotate(angle, axis)
angle = 0
