private void testQueryAABB()
{
Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
b2WorldQueryCallback cb = delegate(b2Fixture fixture) {
b2Body body = fixture.GetBody();
body.SetAwake(true);
return(true);
};
float w = 200 / ptm_ratio;
float h = 200 / ptm_ratio;
b2AABB aabb = b2AABB.MakeWH(w, h, mousePos.x, mousePos.y);
_world.QueryAABB(cb, aabb);
b2Vec2[] vertices = new b2Vec2[] {
new b2Vec2(aabb.lowerBound.x, aabb.lowerBound.y),
new b2Vec2(aabb.upperBound.x, aabb.lowerBound.y),
new b2Vec2(aabb.upperBound.x, aabb.upperBound.y),
new b2Vec2(aabb.lowerBound.x, aabb.upperBound.y)
};
b2Color color = new b2Color(1.0f, 0.0f, 0.0f);
_debugDraw.DrawPolygon(vertices, vertices.Length, color);
}
private void testQueryShape_poly()
{
Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
b2WorldQueryCallback cb = delegate(b2Fixture fixture) {
b2Body body = fixture.GetBody();
body.SetAwake(true);
return(true);
};
b2Vec2[] vertices = new b2Vec2[4];
vertices [0] = new b2Vec2(-100.0f / ptm_ratio, 0.0f / ptm_ratio);
vertices [1] = new b2Vec2(0.0f / ptm_ratio, 100.0f / ptm_ratio);
vertices [2] = new b2Vec2(100.0f / ptm_ratio, 0.0f / ptm_ratio);
vertices [3] = new b2Vec2(0.0f / ptm_ratio, -200.0f / ptm_ratio);
b2PolygonShape shape = b2PolygonShape.AsArray(vertices, vertices.Length);
b2Transform transform = new b2Transform(new b2Vec2(mousePos.x, mousePos.y), b2Mat22.FromAngle(0));
_world.QueryShape(cb, shape, transform);
for (int i = 0; i < vertices.Length; i++)
{
vertices[i].x += mousePos.x;
vertices[i].y += mousePos.y;
}
b2Color color = new b2Color(1.0f, 0.0f, 0.0f);
_debugDraw.DrawPolygon(vertices, vertices.Length, color);
}
/**返回位置下的刚体*/
private b2Body getPosBody(float x, float y)
{
b2Body b = null;
b2WorldQueryCallback cb = delegate(b2Fixture fixture) {
b = fixture.GetBody();
return(false);
};
_world.QueryPoint(cb, new b2Vec2(x, y));
return(b);
}
private void testQueryShape_circle()
{
Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
b2WorldQueryCallback cb = delegate(b2Fixture fixture) {
b2Body body = fixture.GetBody();
body.SetAwake(true);
return(true);
};
b2CircleShape shape = new b2CircleShape(200.0f / ptm_ratio);
b2Transform transform = new b2Transform(new b2Vec2(mousePos.x, mousePos.y), b2Mat22.FromAngle(0));
_world.QueryShape(cb, shape, transform);
b2Color color = new b2Color(1.0f, 0.0f, 0.0f);
_debugDraw.DrawCircle(new b2Vec2(mousePos.x, mousePos.y), 200.0f / ptm_ratio, color);
}
