void Slice::SliceQuery(cpShape *shape, cpVect point, cpVect normal, cpFloat alpha, struct SliceContext *context)
{
cpVect a = context->a;
cpVect b = context->b;
// Check that the slice was complete by checking that the endpoints aren't in the sliced shape.
if(cpShapePointQuery(shape, a, NULL) > 0.0f && cpShapePointQuery(shape, b, NULL) > 0.0f){
// Can't modify the space during a query.
// Must make a post-step callback to do the actual slicing.
cpSpaceAddPostStepCallback(context->space, (cpPostStepFunc)SliceShapePostStep, shape, context);
}
}
bool RigidBody2D::ClosestPointQuery(const Nz::Vector2f& position, Nz::Vector2f* closestPoint, float* closestDistance) const
{
cpVect pos = cpv(cpFloat(position.x), cpFloat(position.y));
float minDistance = std::numeric_limits<float>::infinity();
Nz::Vector2f closest;
for (cpShape* shape : m_shapes)
{
cpPointQueryInfo result;
cpShapePointQuery(shape, pos, &result);
float resultDistance = float(result.distance);
if (resultDistance < minDistance)
{
closest.Set(float(result.point.x), float(result.point.y));
minDistance = resultDistance;
}
}
if (std::isinf(minDistance))
return false;
if (closestPoint)
*closestPoint = closest;
if (minDistance)
*closestDistance = minDistance;
return true;
}
static void
pointQueryHelper(cpVect *point, cpShape *shape, pointQueryContext *context)
{
if(
!(shape->group && context->group == shape->group) && (context->layers&shape->layers) &&
cpShapePointQuery(shape, *point)
){
context->func(shape, context->data);
}
}
static void
PointQuery(struct PointQueryContext *context, cpShape *shape, void *data)
{
if(
!(shape->group && context->group == shape->group) && (context->layers&shape->layers) &&
cpShapePointQuery(shape, context->point)
){
context->func(shape, context->data);
}
}
static int
pointQueryHelper(void *point, void *obj, void *data)
{
cpShape *shape = (cpShape *)obj;
pointQueryFuncPair *pair = (pointQueryFuncPair *)data;
if(cpShapePointQuery(shape, *((cpVect *)point)))
pair->func(shape, pair->data);
return 1; // return value needed for historical reasons (value is ignored)
}
bool PhysicsShape::containsPoint(const Vec2& point) const
{
for (auto shape : _cpShapes)
{
if (cpShapePointQuery(shape, PhysicsHelper::point2cpv(point), nullptr) < 0)
{
return true;
}
}
return false;
}
bool PhysicsShape::containsPoint(const Point& point) const
{
for (auto shape : _info->getShapes())
{
if (cpShapePointQuery(shape, PhysicsHelper::point2cpv(point)))
{
return true;
}
}
return false;
}
static cpCollisionID
PointQuery(struct PointQueryContext *context, cpShape *shape, cpCollisionID id, void *data)
{
if(
!(shape->group && context->group == shape->group) && (context->layers&shape->layers) &&
cpShapePointQuery(shape, context->point)
){
context->func(shape, context->data);
}
return id;
}
int wrShapePointQuery(cpShape *shape, cpVect *p) {
return cpShapePointQuery(shape, *p);
}