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[Math] Fix Matrix-Vector multiplication

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This commit is contained in:
Eryn Wells 2015-11-12 23:19:14 -08:00
parent 23bbdac76a
commit cd8bd144f6
1 changed files with 2 additions and 2 deletions
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4
Math/Math/Matrix.swift
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@ -292,10 +292,10 @@ public func *<T: Matrix>(lhs: T, rhs: T) -> T {
// MARK: Matrix-Vector multiplication
public func *(lhs: Matrix4, rhs: Vector4) -> Vector4 {
var out = Vector4()
var out = Vector4(x: 0.0, y: 0.0, z: 0.0, w: 0.0)
for i in 0..<Matrix4.dimension {
for j in 0..<Matrix4.dimension {
out[i] += lhs[i] * rhs[j]
out[i] += lhs[i*Matrix4.dimension + j] * rhs[j]
}
}
return out