def ortho_zoom(self, zoom_level = 1.0):
if not self.ortho:
print('Not on orthogonal projection mode')
return
vsml.loadIdentity(vsml.MatrixTypes.PROJECTION)
ratio = abs(self.width * 1.0 / self.height)
self.width_ortho = self.width * zoom_level * ratio
self.height_ortho = self.width * zoom_level
vsml.ortho(-(self.width_ortho)/2.,(self.width_ortho)/2.,
(self.height_ortho)/2.,(self.height_ortho)/-2.,-500,8000)
glMatrixMode(GL_PROJECTION)
glLoadMatrixf(vsml.get_projection())
glMatrixMode(GL_MODELVIEW)
def update_projection(self, factor = 1.0):
vsml.loadIdentity(vsml.MatrixTypes.PROJECTION)
ratio = abs(self.width * 1.0 / self.height)
if self.ortho:
self.width_ortho += -factor * ratio
self.height_ortho += -factor
vsml.ortho(-(self.width_ortho)/2.,(self.width_ortho)/2.,
(self.height_ortho)/2.,(self.height_ortho)/-2.,-500,8000)
else:
vsml.perspective(60., ratio, .1, 8000)
glMatrixMode(GL_PROJECTION)
glLoadMatrixf(vsml.get_projection())
glMatrixMode(GL_MODELVIEW)