private void scaleShape(b2Shape shape, bool isOnlyCenter = false)
{
if (shape is b2PolygonShape)
{
b2PolygonShape poly = shape as b2PolygonShape;
List <b2Vec2> vertices = poly.GetVertices();
for (int i = 0; i < vertices.Count; i++)
{
vertices[i].x *= transform.lossyScale.x;
vertices[i].y *= transform.lossyScale.y;
}
}
else if (shape is b2CircleShape)
{
b2CircleShape circle = shape as b2CircleShape;
if (!isOnlyCenter)
{
float scale = Mathf.Max(transform.lossyScale.x, transform.lossyScale.y);
circle.SetRadius(circle.GetRadius() * scale);
}
var offset = circle.GetLocalPosition();
offset.x *= transform.lossyScale.x;
offset.y *= transform.lossyScale.y;
circle.SetLocalPosition(offset);
}
}
/**在编辑器更改碰撞器Center时*/
public void onEditShapeCenter(object[] args)
{
Collider2D collider = (Collider2D)args [0];
float cx = (float)args [1];
float cy = (float)args [2];
float oldCX = (float)args[3];
float oldCY = (float)args[4];
b2Fixture[] fixtures = _fixtureDict [collider];
if (fixtures != null)
{
for (int i = 0; i < fixtures.Length; i++)
{
b2Fixture fixture = fixtures[i];
b2Shape s = fixture.GetShape();
if (collider is BoxCollider2D)
{
b2PolygonShape boxShape = s as b2PolygonShape;
BoxCollider2D boxColl = collider as BoxCollider2D;
boxShape.SetAsOrientedBox(boxColl.size.x * 0.5f, boxColl.size.y * 0.5f, new b2Vec2(cx, cy), 0);
scaleShape(boxShape);
_body.SetAwake(true);
}
else if (collider is CircleCollider2D)
{
b2CircleShape circleShape = s as b2CircleShape;
circleShape.SetLocalPosition(new b2Vec2(cx, cy));
scaleShape(circleShape, true);
_body.SetAwake(true);
}
else if (collider is PolygonCollider2D)
{
b2PolygonShape polyShape = s as b2PolygonShape;
PolygonCollider2D polyColl = collider as PolygonCollider2D;
List <b2Vec2> vertices = polyShape.GetVertices();
for (int j = 0; j < vertices.Count; j++)
{
b2Vec2 v = vertices[j];
v.x -= oldCX;
v.y -= oldCY;
v.x += cx;
v.y += cy;
}
//scaleShape(polyShape);
_body.SetAwake(true);
}
}
}
}