def getCenter(self):
"""Return the center of the material form."""
center=MaterialPoint.createFromform.center
x,y=center
position=Vector(x,y,color=mycolors.GREEN)
point_motion=Motion()
for point in self.points:
point_motion+=point.getMotion()
material_center=MaterialPoint(point_motion)
material_center.setPosition(position)
return material_center
def showMotion(self,surface):
"""Show the motion on a surface."""
form=self.getForm()
center=form.center()
x,y=center
position=Vector(x,y,color=mycolors.GREEN)
point_motion=Motion()
for point in self.points:
point_motion+=point.getMotion()
material_center=MaterialPoint(point_motion)
material_center.setPosition(position)
material_center.showMotion(surface)