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Rework castRays function

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This commit is contained in:
Miloslav Číž 2018-08-31 18:11:32 +02:00
parent 40d80db615
commit 1e5d223be2
1 changed files with 11 additions and 13 deletions
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raycastlib.h
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@ -75,7 +75,7 @@ typedef struct
typedef struct typedef struct
{ {
Vector2D position; ///< On-screen position. Vector2D position; ///< On-screen position.
int8_t type; ///< Type of pixel: 0 - wall, 1 - floor, 2 - ceiling. int8_t isWall; ///< Whether the pixel is a wall or a floor(/ceiling).
Unit depth; ///< Corrected depth. Unit depth; ///< Corrected depth.
HitResult hit; ///< Corresponding ray hit. HitResult hit; ///< Corresponding ray hit.
} PixelInfo; } PixelInfo;
@ -87,8 +87,9 @@ typedef struct
} RayConstraints; } RayConstraints;
typedef int16_t (*ArrayFunction)(int16_t x, int16_t y); typedef int16_t (*ArrayFunction)(int16_t x, int16_t y);
typedef void (*HitFunction)(uint16_t pos, HitResult h, uint16_t hitNo, Ray r); typedef void (*ColumnFunction)(HitResult *hits, uint16_t hitCount, uint16_t x,
typedef void (*PixelFunc)(PixelInfo info); Ray ray);
typedef void (*PixelFunction)(PixelInfo info);
/** /**
Casts a single ray and returns the first collision result. Casts a single ray and returns the first collision result.
@ -137,11 +138,8 @@ Unit perspectiveScale(Unit originalSize, Unit distance, Unit fov);
Casts rays for given camera view and for each hit calls a user provided Casts rays for given camera view and for each hit calls a user provided
function. function.
*/ */
void castRaysMultiHit(Camera cam, ArrayFunction arrayFunc, HitFunction hitFunc, void castRaysMultiHit(Camera cam, ArrayFunction arrayFunc,
RayConstraints constraints); ColumnFunction columnFunc, RayConstraints constraints);
void render(Camera cam, ArrayFunction arrayFunc, PixelFunc pixelFunc,
RayConstraints constraints);
//============================================================================= //=============================================================================
// privates // privates
@ -454,8 +452,8 @@ HitResult castRay(Ray ray, ArrayFunction arrayFunc)
return result; return result;
} }
void castRaysMultiHit(Camera cam, ArrayFunction arrayFunc, HitFunction hitFunc, void castRaysMultiHit(Camera cam, ArrayFunction arrayFunc,
RayConstraints constraints) ColumnFunction columnFunc, RayConstraints constraints)
{ {
uint16_t fovHalf = cam.fovAngle / 2; uint16_t fovHalf = cam.fovAngle / 2;
@ -466,20 +464,20 @@ void castRaysMultiHit(Camera cam, ArrayFunction arrayFunc, HitFunction hitFunc,
Unit dY = dir2.y - dir1.y; Unit dY = dir2.y - dir1.y;
HitResult hits[constraints.maxHits]; HitResult hits[constraints.maxHits];
Ray rays[constraints.maxHits];
uint16_t hitCount; uint16_t hitCount;
Ray r; Ray r;
r.start = cam.position; r.start = cam.position;
for (uint8_t i = 0; i < cam.resolution.x; ++i) for (uint16_t i = 0; i < cam.resolution.x; ++i)
{ {
r.direction.x = dir1.x + (dX * i) / cam.resolution.x; r.direction.x = dir1.x + (dX * i) / cam.resolution.x;
r.direction.y = dir1.y + (dY * i) / cam.resolution.x; r.direction.y = dir1.y + (dY * i) / cam.resolution.x;
castRayMultiHit(r,arrayFunc,hits,&hitCount,constraints); castRayMultiHit(r,arrayFunc,hits,&hitCount,constraints);
for (uint8_t j = 0; j < hitCount; ++j) columnFunc(hits,hitCount,i,r);
hitFunc(i,hits[j],j,r);
} }
} }