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Render wall height offset

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This commit is contained in:
Miloslav Číž 2018-08-31 19:13:15 +02:00
parent fb3922a7ba
commit 50df4a40f4
1 changed files with 28 additions and 24 deletions
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14
raycastlib.h
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@ -485,14 +485,14 @@ void castRaysMultiHit(Camera cam, ArrayFunction arrayFunc,
}
PixelFunction _pixelFunction = 0;
ArrayFunction _arrayFunction = 0;
Camera _camera;
void _columnFunction(HitResult *hits, uint16_t hitCount, uint16_t x, Ray ray)
{
if (hitCount == 0)
return;
HitResult hit = hits[0];
for (uint32_t j = 0; j < hitCount; ++j)
{
HitResult hit = hits[j];
Unit dist = // adjusted distance
(hit.distance * vectorsAngleCos(angleToDirection(_camera.direction),
@ -502,7 +502,9 @@ void _columnFunction(HitResult *hits, uint16_t hitCount, uint16_t x, Ray ray)
int32_t height = perspectiveScale(50,dist,1);
Unit offset = perspectiveScale(_camera.height,dist,1);
int16_t z = _arrayFunction(hit.square.x,hit.square.y) * 50;
Unit offset = perspectiveScale(_camera.height - z,dist,1);
uint32_t start = _camera.resolution.y / 2 - height / 2 + offset;
@ -518,11 +520,13 @@ void _columnFunction(HitResult *hits, uint16_t hitCount, uint16_t x, Ray ray)
_pixelFunction(p);
}
}
}
void render(Camera cam, ArrayFunction arrayFunc, PixelFunction pixelFunc,
RayConstraints constraints)
{
_pixelFunction = pixelFunc;
_arrayFunction = arrayFunc;
_camera = cam;
castRaysMultiHit(cam,arrayFunc,_columnFunction,constraints);
}