static void set_polygon_shape( const World& trans,
const float l, const float t, const float r, const float b,
b2PolygonShape& out) {
const b2Vec2 lt = trans.Ci2BoxTranslation(ci::Vec3f(l, t, 0.0f), nullptr); // using nullptr for the sprite will make the polygon be in world space
const b2Vec2 rb = trans.Ci2BoxTranslation(ci::Vec3f(r, b, 0.0f), nullptr);
b2Vec2 vtx[4];
vtx[0].Set(lt.x, lt.y);
vtx[1].Set(rb.x, lt.y);
vtx[2].Set(rb.x, rb.y);
vtx[3].Set(lt.x, rb.y);
out.Set(vtx, 4);
}
bool CollidableTemplate::ConfigurePoly(const TiXmlElement *element, b2PolygonShape &shape)
{
// process child elements
for (const TiXmlElement *child = element->FirstChildElement(); child != NULL; child = child->NextSiblingElement())
{
ConfigurePolyItem(child, shape);
}
// update other properties
shape.Set(shape.m_vertices, shape.m_vertexCount);
return true;
}
