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Allow a slider to set the colorRotation in radians

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Eryn Wells 2018-10-09 16:51:35 -07:00
parent e2886f9aad
commit 1b8fc1feb7
5 changed files with 74 additions and 6 deletions
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16
MetaballsKit/Math.swift
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@ -43,13 +43,21 @@ extension Float4 {
}
}
extension Matrix2x2 {
static func rotation(theta: Float) -> Matrix2x2 {
extension Matrix3x3 {
static func rotation(angle theta: Float) -> Matrix3x3 {
return self.init(rows: [
Float2(cos(theta), -sin(theta)),
Float2(sin(theta), cos(theta)),
Float3(cos(theta), -sin(theta), 0.0),
Float3(sin(theta), cos(theta), 0.0),
Float3(0, 0, 1),
])
}
static func translation(dx: Float, dy: Float) -> Matrix3x3 {
var mat = self.init(1.0)
mat.columns.2.x = dx
mat.columns.2.y = dy
return mat
}
}
extension Matrix4x4 {