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#ifndef LLMR_TEXT_ROTATION_RANGE
#define LLMR_TEXT_ROTATION_RANGE
#include <llmr/util/vec.hpp>
#include <llmr/util/math.hpp>
#include <array>
#include <vector>
#include <cassert>
namespace llmr {
typedef vec2<float> CollisionPoint;
typedef vec2<float> CollisionAnchor;
typedef std::array<float, 2> PlacementRange;
typedef float CollisionAngle;
typedef std::vector<CollisionAngle> CollisionAngles;
typedef std::array<CollisionAngle, 2> CollisionRange;
typedef std::vector<CollisionRange> CollisionList;
typedef std::array<CollisionPoint, 4> CollisionCorners;
struct CollisionRect {
CollisionPoint tl;
CollisionPoint br;
inline explicit CollisionRect() {}
inline explicit CollisionRect(CollisionPoint::Type ax,
CollisionPoint::Type ay,
CollisionPoint::Type bx,
CollisionPoint::Type by)
: tl(ax, ay), br(bx, by) {}
inline explicit CollisionRect(const CollisionPoint &tl,
const CollisionPoint &br)
: tl(tl), br(br) {}
};
/*
* Combine an array of collision ranges to form a continuous
* range that includes 0. Collisions within the ignoreRange are ignored
*/
CollisionRange mergeCollisions(const CollisionList &collisions,
PlacementRange ignoreRange);
/*
* Calculate collision ranges for two rotating boxes.e
*/
CollisionList rotatingRotatingCollisions(const CollisionRect &a,
const CollisionRect &b,
const CollisionAnchor &anchorToAnchor);
/*
* Return the intersection points of a circle and a line segment;
*/
void circleEdgeCollisions(std::back_insert_iterator<CollisionAngles> angles,
const CollisionPoint &corner, float radius,
const CollisionPoint &p1, const CollisionPoint &p2);
/*
* Calculate the ranges for which the corner,
* rotatated around the anchor, is within the box;
*/
void cornerBoxCollisions(std::back_insert_iterator<CollisionList> collisions,
const CollisionPoint &corner,
const CollisionCorners &boxCorners, bool flip = false);
/*
* Calculate collision ranges for a rotating box and a fixed box;
*/
CollisionList rotatingFixedCollisions(const CollisionRect &rotating,
const CollisionRect &fixed);
/*
* Calculate the range a box conflicts with a second box
*/
template <typename InsertingBox, typename BlockingBox>
CollisionRange rotationRange(const InsertingBox &inserting,
const BlockingBox &blocker, float scale);
}
#endif
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