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 crossMaterialForm(self,other):
"""Return the material point of intersection between two material forms."""
f1=self.getForm()
f2=other.getForm()
points=f1.crossForm(f2)
points=[MaterialPoint.createFromPoint(point) for point in points]
return points
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)
def createFromForm(form):
"""Create a material form using a Form instance."""
return MaterialForm(
[MaterialPoint.createFromAbstract(point) for point in form.points])
def getCenter(self):
"""Return the material center of the form."""
return MaterialPoint.average(self.points)
def crossMaterialForm(self, other):
"""Return the material point of intersection between two material forms."""
f1 = self.abstract
f2 = other.abstract
points = f1.crossForm(f2)
return [MaterialPoint.createFromAbstract(point) for point in points]
def null(d=2):
"""Return the neutral element of the material segment."""
return MaterialSegment([MaterialPoint.null(d) for i in range(2)])
def random(corners=[-1,-1,1,1]):
"""Return a random material segment within the given corners."""
return MaterialSegment([MaterialPoint.random(corners) for i in range(2)])
def createFromForm(form,forces=[]):
"""Create a material form using a Form instance."""
material_points=[MaterialPoint.createFromPoint(point,forces) for point in form.getPoints()]
return MaterialForm(material_points)
def random(corners=[-1,-1,1,1],number=5):
"""Create a random material form."""
points=[MaterialPoint.random(min,max) for n in range(number)]
return MaterialForm(points)