So broken lol
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@ -60,15 +60,6 @@ func Triangle1(fb *Framebuffer, color uint, v0 Vec2i, v1 Vec2i, v2 Vec2i) {
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v1, v2 = v2, v1
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}
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// The lesson says to always figure out what's on the left.
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// As such, we always go from left to right
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// While drawing the straight line, go the opposite direction if the
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// longer side is on the right (we go from long side to short)
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var sweep int = 1
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if v2.X > v1.X {
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sweep = -1
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}
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// Don't worry about speed for now...
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dy := float32(v2.Y-v0.Y) - 0.5
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var v02step, v01step, v12step, xlong, xshort float32
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@ -88,8 +79,13 @@ func Triangle1(fb *Framebuffer, color uint, v0 Vec2i, v1 Vec2i, v2 Vec2i) {
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}
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for y := v0.Y; y <= v2.Y; y++ {
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// Draw a horizontal line from
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for x := int(math.Floor(float64(xlong))); x <= int(math.Floor(float64(xshort))); x += sweep {
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xleft := int(math.Floor(float64(xshort)))
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xright := int(math.Floor(float64(xlong)))
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if xleft > xright {
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xleft, xright = xright, xleft
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}
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// Draw a horizontal line from elft to right
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for x := xleft; x <= xright; x++ {
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fb.SetSafe(uint(x), uint(y), color)
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}
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xlong += v02step
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