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graphicsutil: Refactoring

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This commit is contained in:
Hajime Hoshi 2018-06-17 17:29:22 +09:00
parent 5d37c331bb
commit 1849b59741
1 changed files with 6 additions and 5 deletions
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11
internal/graphicsutil/vertices.go
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@ -55,8 +55,6 @@ func QuadVertices(width, height int, sx0, sy0, sx1, sy1 int, geom GeoM) []float3
return nil return nil
} }
vs := theVerticesBackend.sliceForOneQuad()
x0, y0 := float32(0.0), float32(0.0) x0, y0 := float32(0.0), float32(0.0)
x1, y1 := float32(sx1-sx0), float32(sy1-sy0) x1, y1 := float32(sx1-sx0), float32(sy1-sy0)
@ -73,11 +71,12 @@ func QuadVertices(width, height int, sx0, sy0, sx1, sy1 int, geom GeoM) []float3
wf := float32(w) wf := float32(w)
hf := float32(h) hf := float32(h)
u0, v0, u1, v1 := float32(sx0)/wf, float32(sy0)/hf, float32(sx1)/wf, float32(sy1)/hf u0, v0, u1, v1 := float32(sx0)/wf, float32(sy0)/hf, float32(sx1)/wf, float32(sy1)/hf
quadVerticesImpl(vs, u0, v0, u1, v1, x0, y0, x1, y1, geom) return quadVerticesImpl(u0, v0, u1, v1, x0, y0, x1, y1, geom)
return vs
} }
func quadVerticesImpl(vs []float32, u0, v0, u1, v1, x0, y0, x1, y1 float32, geom GeoM) { func quadVerticesImpl(u0, v0, u1, v1, x0, y0, x1, y1 float32, geom GeoM) []float32 {
vs := theVerticesBackend.sliceForOneQuad()
x, y := geom.Apply(x0, y0) x, y := geom.Apply(x0, y0)
// Vertex coordinates // Vertex coordinates
vs[0] = x vs[0] = x
@ -115,4 +114,6 @@ func quadVerticesImpl(vs []float32, u0, v0, u1, v1, x0, y0, x1, y1 float32, geom
vs[21] = v1 vs[21] = v1
vs[22] = u0 vs[22] = u0
vs[23] = v0 vs[23] = v0
return vs
} }