library-mirrors/light_world.lua
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Merge pull request #15 from willemt/master

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- fixed the shadows of polygons without 8 vertices
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Tim Anema 2015-01-11 15:05:50 -05:00
commit 2c00eb0bc7
1 changed files with 1 additions and 1 deletions
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lib/body.lua
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@ -649,7 +649,7 @@ function body:drawPolyShadow(light)
for i = 1, #self.data, 2 do for i = 1, #self.data, 2 do
local vertex = vector(self.data[i], self.data[i + 1]) local vertex = vector(self.data[i], self.data[i + 1])
local nextVertex = vector(self.data[(i + 2) % 8], self.data[(i + 2) % 8 + 1]) local nextVertex = vector(self.data[(i + 2) % #self.data], self.data[(i + 2) % #self.data + 1])
local startToEnd = nextVertex - vertex local startToEnd = nextVertex - vertex
if vector(startToEnd.y, -startToEnd.x) * (vertex - lightPosition) > 0 then if vector(startToEnd.y, -startToEnd.x) * (vertex - lightPosition) > 0 then
local point1 = (lh - (vertex * light.z))/height_diff local point1 = (lh - (vertex * light.z))/height_diff