mirror of
https://github.com/hajimehoshi/ebiten.git
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75 lines
2.0 KiB
Go
75 lines
2.0 KiB
Go
// Copyright 2013 Hajime Hoshi
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package matrix
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const colorDim = 5
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type Color struct {
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Elements [colorDim - 1][colorDim]float64
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}
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func IdentityColor() Color {
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return Color{
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[colorDim - 1][colorDim]float64{
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{1, 0, 0, 0, 0},
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{0, 1, 0, 0, 0},
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{0, 0, 1, 0, 0},
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{0, 0, 0, 1, 0},
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},
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}
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}
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func (matrix *Color) Dim() int {
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return colorDim
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}
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func (matrix *Color) Concat(other Color) {
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result := Color{}
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mul(&other, matrix, &result)
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*matrix = result
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}
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func (matrix *Color) IsIdentity() bool {
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return isIdentity(matrix)
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}
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func (matrix *Color) element(i, j int) float64 {
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return matrix.Elements[i][j]
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}
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func (matrix *Color) setElement(i, j int, element float64) {
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matrix.Elements[i][j] = element
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}
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func Monochrome() Color {
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const r float64 = 6968.0 / 32768.0
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const g float64 = 23434.0 / 32768.0
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const b float64 = 2366.0 / 32768.0
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return Color{
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[colorDim - 1][colorDim]float64{
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{r, g, b, 0, 0},
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{r, g, b, 0, 0},
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{r, g, b, 0, 0},
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{0, 0, 0, 1, 0},
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},
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}
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}
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