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Better clipping

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This commit is contained in:
Daniele Verducci 2023-01-10 19:01:57 +01:00
parent b063e5606e
commit b4f1cf6353
1 changed files with 10 additions and 2 deletions
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12
v2/raycaster.py
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@ -366,20 +366,28 @@ class Main:
# Clipping
lineEnd = textureSegmentEnd
if lineEnd > lineOffset + lineHeight:
lineEnd = lineOffset + lineHeight
if lineEnd > RAYCAST_RENDER_HEIGHT:
lineEnd = RAYCAST_RENDER_HEIGHT
lineStart = textureSegmentStart
if lineStart < 0:
lineStart = 0
if lineEnd < lineStart:
continue
# Upscaling
lineStart = lineStart * RAYCAST_RESOLUTION_SCALING
lineEnd = lineEnd * RAYCAST_RESOLUTION_SCALING
# Draw segment
for repeat in range(1, RAYCAST_RESOLUTION_SCALING + 1):
x = i * RAYCAST_RESOLUTION_SCALING + repeat
self.drawVline(self.raycastSurface, color, x, int(lineStart), int(lineEnd))
def drawVline(self, surface, color, x, startY, endY):
if x < 0 or x > RAYCAST_WIN_WIDTH or startY < 0 or endY > RAYCAST_WIN_HEIGHT or endY < startY:
print("Trying to write outside bounds: vertical line with x {} from y {} to y {}".format(x, startY, endY))
return
startIdx = startY * RAYCAST_WIN_WIDTH + x
for idx in range(startIdx, endY * RAYCAST_WIN_WIDTH + x, RAYCAST_WIN_WIDTH):
self.raycast_u32_pixels[idx] = color