/**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);
}
}
}
}
/**在编辑器更改碰撞器的形状Shape时*/
private void onEditShape(object[] args)
{
Collider2D collider = (Collider2D)args [0];
b2Fixture[] fixtures = _fixtureDict [collider];
if (collider is BoxCollider2D)
{
b2Fixture fixture = fixtures[0];
b2Shape s = fixture.GetShape();
float sizeX = (float)args [1];
float sizeY = (float)args [2];
BoxCollider2D boxColl = collider as BoxCollider2D;
b2PolygonShape polygon = s as b2PolygonShape;
polygon.SetAsOrientedBox(sizeX * 0.5f, sizeY * 0.5f, new b2Vec2(boxColl.offset.x, boxColl.offset.y), 0);
scaleShape(polygon);
_body.SetAwake(true);
}
else if (collider is PolygonCollider2D)
{
Vector2[] points = (Vector2[])args[1];
int len = points.Length;
b2Vec2[] vertices = new b2Vec2[len];
for (int i = 0; i < len; i++)
{
vertices[i] = new b2Vec2(points[i].x, points[i].y);
}
b2FixtureDef fixtureDef = new b2FixtureDef();
fixtureDef.density = fixtures[0].GetDensity();
fixtureDef.friction = fixtures[0].GetFriction();
fixtureDef.isSensor = fixtures[0].IsSensor();
fixtureDef.restitution = fixtures[0].GetRestitution();
int j = fixtures.Length;
while (--j >= 0)
{
_body.DestroyFixture(fixtures[j]);
}
b2Separator sep = new b2Separator();
_fixtureDict [collider] = sep.Separate(_body, fixtureDef, vertices, 1);
fixtures = _fixtureDict [collider];
for (j = 0; j < fixtures.Length; j++)
{
scaleShape(fixtures[j].GetShape());
}
_body.SetAwake(true);
}
else if (collider is CircleCollider2D)
{
b2Fixture fixture = fixtures[0];
float radius = (float)args[1];
float cx = (float)args[2];
float cy = (float)args[3];
b2Shape s = fixture.GetShape();
b2CircleShape circle = s as b2CircleShape;
circle.SetRadius(radius);
circle.SetLocalPosition(new b2Vec2(cx, cy));
scaleShape(circle);
_body.SetAwake(true);
}
}