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Move shear to camera

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This commit is contained in:
Miloslav Číž 2018-09-08 07:10:09 +02:00
parent 78ec58d1df
commit 5c9c7cb299
1 changed files with 7 additions and 9 deletions
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16
raycastlib.h
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@ -101,6 +101,8 @@ typedef struct
Vector2D position; Vector2D position;
Unit direction; Unit direction;
Vector2D resolution; Vector2D resolution;
int16_t shear; /* Shear offset in pixels (0 => no shear), can simulate
looking up/down. */
Unit fovAngle; Unit fovAngle;
Unit height; Unit height;
@ -203,13 +205,10 @@ void castRaysMultiHit(Camera cam, ArrayFunction arrayFunc,
index), can be 0 (no type in hit result) index), can be 0 (no type in hit result)
@param pixelFunc callback function to draw a single pixel on screen @param pixelFunc callback function to draw a single pixel on screen
@param constraints constraints for each cast ray @param constraints constraints for each cast ray
@param verticalShear normalized camera shear from (1 = UNITS_PER_SQUARE =
camera y resolution, 0 means no shear), can simulate
looking up/down
*/ */
void render(Camera cam, ArrayFunction floorHeightFunc, void render(Camera cam, ArrayFunction floorHeightFunc,
ArrayFunction ceilingHeightFunc, ArrayFunction typeFunction, ArrayFunction ceilingHeightFunc, ArrayFunction typeFunction,
PixelFunction pixelFunc, RayConstraints constraints, Unit verticalShear); PixelFunction pixelFunc, RayConstraints constraints);
void moveCameraWithCollision(Camera *camera, Vector2D planeOffset, void moveCameraWithCollision(Camera *camera, Vector2D planeOffset,
Unit heightOffset, ArrayFunction floorHeightFunc, Unit heightOffset, ArrayFunction floorHeightFunc,
@ -854,7 +853,7 @@ void _columnFunction(HitResult *hits, uint16_t hitCount, uint16_t x, Ray ray)
void render(Camera cam, ArrayFunction floorHeightFunc, void render(Camera cam, ArrayFunction floorHeightFunc,
ArrayFunction ceilingHeightFunc, ArrayFunction typeFunction, ArrayFunction ceilingHeightFunc, ArrayFunction typeFunction,
PixelFunction pixelFunc, RayConstraints constraints, Unit verticalShear) PixelFunction pixelFunc, RayConstraints constraints)
{ {
_pixelFunction = pixelFunc; _pixelFunction = pixelFunc;
_floorFunction = floorHeightFunc; _floorFunction = floorHeightFunc;
@ -863,9 +862,7 @@ void render(Camera cam, ArrayFunction floorHeightFunc,
_camResYLimit = cam.resolution.y - 1; _camResYLimit = cam.resolution.y - 1;
_middleRow = cam.resolution.y / 2; _middleRow = cam.resolution.y / 2;
if (verticalShear != 0) _middleRow = _middleRow + cam.shear;
_middleRow = _middleRow + (verticalShear * _middleRow) /
UNITS_PER_SQUARE;
_computeTextureCoords = constraints.computeTextureCoords; _computeTextureCoords = constraints.computeTextureCoords;
@ -933,7 +930,8 @@ PixelInfo mapToScreen(Vector2D worldPosition, Unit height, Camera camera)
result.position.y = camera.resolution.y / 2 - result.position.y = camera.resolution.y / 2 -
(camera.resolution.y * (camera.resolution.y *
perspectiveScale(height - camera.height,result.depth)) / UNITS_PER_SQUARE; perspectiveScale(height - camera.height,result.depth)) / UNITS_PER_SQUARE
+ camera.shear;
Unit middleColumn = camera.resolution.x / 2; Unit middleColumn = camera.resolution.x / 2;