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Hide AffineMatrixElement

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This commit is contained in:
Hajime Hoshi 2013-06-19 09:29:17 +09:00
parent b5df3231e3
commit 7c23c6b326
4 changed files with 24 additions and 24 deletions
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4
examples/glut/main.go
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@ -120,8 +120,8 @@ func (game *DemoGame) Draw(g graphics.GraphicsContext, offscreen graphics.Textur
return return
} }
geometryMatrix := graphics.IdentityGeometryMatrix() geometryMatrix := graphics.IdentityGeometryMatrix()
geometryMatrix.SetTx(graphics.AffineMatrixElement(game.x)) geometryMatrix.SetTx(float64(game.x))
geometryMatrix.SetTy(graphics.AffineMatrixElement(game.x)) geometryMatrix.SetTy(float64(game.x))
g.DrawTexture(game.ebitenTexture, g.DrawTexture(game.ebitenTexture,
0, 0, game.ebitenTexture.Width(), game.ebitenTexture.Height(), 0, 0, game.ebitenTexture.Width(), game.ebitenTexture.Height(),
geometryMatrix, geometryMatrix,

16
graphics/affine_matrix.go
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@ -1,9 +1,9 @@
package graphics package graphics
type AffineMatrixElement float64 type affineMatrixElement float64
type AffineMatrix struct { type AffineMatrix struct {
elements []AffineMatrixElement elements []affineMatrixElement
dimension int dimension int
} }
@ -13,7 +13,7 @@ func NewAffineMatrix(dimension int) *AffineMatrix {
} }
matrix := &AffineMatrix{} matrix := &AffineMatrix{}
elementsNumber := dimension * (dimension - 1) elementsNumber := dimension * (dimension - 1)
matrix.elements = make([]AffineMatrixElement, elementsNumber) matrix.elements = make([]affineMatrixElement, elementsNumber)
matrix.dimension = dimension matrix.dimension = dimension
return matrix return matrix
} }
@ -41,7 +41,7 @@ func (matrix *AffineMatrix) Clone() *AffineMatrix {
return result return result
} }
func (matrix *AffineMatrix) Element(i, j int) AffineMatrixElement { func (matrix *AffineMatrix) Element(i, j int) float64 {
dimension := matrix.dimension dimension := matrix.dimension
if i < 0 || dimension <= i { if i < 0 || dimension <= i {
panic("out of range index i") panic("out of range index i")
@ -55,10 +55,10 @@ func (matrix *AffineMatrix) Element(i, j int) AffineMatrixElement {
} }
return 0 return 0
} }
return matrix.elements[i*dimension+j] return float64(matrix.elements[i*dimension+j])
} }
func (matrix *AffineMatrix) SetElement(i, j int, element AffineMatrixElement) { func (matrix *AffineMatrix) SetElement(i, j int, element float64) {
dimension := matrix.dimension dimension := matrix.dimension
if i < 0 || dimension-1 <= i { if i < 0 || dimension-1 <= i {
panic("out of range index i") panic("out of range index i")
@ -66,7 +66,7 @@ func (matrix *AffineMatrix) SetElement(i, j int, element AffineMatrixElement) {
if j < 0 || dimension <= j { if j < 0 || dimension <= j {
panic("out of range index j") panic("out of range index j")
} }
matrix.elements[i*dimension+j] = element matrix.elements[i*dimension+j] = affineMatrixElement(element)
} }
func (matrix *AffineMatrix) IsIdentity() bool { func (matrix *AffineMatrix) IsIdentity() bool {
@ -96,7 +96,7 @@ func (rhs *AffineMatrix) Concat(lhs *AffineMatrix) *AffineMatrix {
for i := 0; i < dimension-1; i++ { for i := 0; i < dimension-1; i++ {
for j := 0; j < dimension; j++ { for j := 0; j < dimension; j++ {
var element AffineMatrixElement = 0.0 element := affineMatrixElement(0.0)
for k := 0; k < dimension-1; k++ { for k := 0; k < dimension-1; k++ {
element += lhs.elements[i*dimension+k] * element += lhs.elements[i*dimension+k] *
rhs.elements[k*dimension+j] rhs.elements[k*dimension+j]

24
graphics/geometry_matrix.go
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@ -18,50 +18,50 @@ func (matrix *GeometryMatrix) Clone() *GeometryMatrix {
return &GeometryMatrix{*(matrix.AffineMatrix.Clone())} return &GeometryMatrix{*(matrix.AffineMatrix.Clone())}
} }
func (matrix *GeometryMatrix) A() AffineMatrixElement { func (matrix *GeometryMatrix) A() float64 {
return matrix.Element(0, 0) return matrix.Element(0, 0)
} }
func (matrix *GeometryMatrix) B() AffineMatrixElement { func (matrix *GeometryMatrix) B() float64 {
return matrix.Element(0, 1) return matrix.Element(0, 1)
} }
func (matrix *GeometryMatrix) C() AffineMatrixElement { func (matrix *GeometryMatrix) C() float64 {
return matrix.Element(1, 0) return matrix.Element(1, 0)
} }
func (matrix *GeometryMatrix) D() AffineMatrixElement { func (matrix *GeometryMatrix) D() float64 {
return matrix.Element(1, 1) return matrix.Element(1, 1)
} }
func (matrix *GeometryMatrix) Tx() AffineMatrixElement { func (matrix *GeometryMatrix) Tx() float64 {
return matrix.Element(0, 2) return matrix.Element(0, 2)
} }
func (matrix *GeometryMatrix) Ty() AffineMatrixElement { func (matrix *GeometryMatrix) Ty() float64 {
return matrix.Element(1, 2) return matrix.Element(1, 2)
} }
func (matrix *GeometryMatrix) SetA(a AffineMatrixElement) { func (matrix *GeometryMatrix) SetA(a float64) {
matrix.SetElement(0, 0, a) matrix.SetElement(0, 0, a)
} }
func (matrix *GeometryMatrix) SetB(b AffineMatrixElement) { func (matrix *GeometryMatrix) SetB(b float64) {
matrix.SetElement(0, 1, b) matrix.SetElement(0, 1, b)
} }
func (matrix *GeometryMatrix) SetC(c AffineMatrixElement) { func (matrix *GeometryMatrix) SetC(c float64) {
matrix.SetElement(1, 0, c) matrix.SetElement(1, 0, c)
} }
func (matrix *GeometryMatrix) SetD(d AffineMatrixElement) { func (matrix *GeometryMatrix) SetD(d float64) {
matrix.SetElement(1, 1, d) matrix.SetElement(1, 1, d)
} }
func (matrix *GeometryMatrix) SetTx(tx AffineMatrixElement) { func (matrix *GeometryMatrix) SetTx(tx float64) {
matrix.SetElement(0, 2, tx) matrix.SetElement(0, 2, tx)
} }
func (matrix *GeometryMatrix) SetTy(ty AffineMatrixElement) { func (matrix *GeometryMatrix) SetTy(ty float64) {
matrix.SetElement(1, 2, ty) matrix.SetElement(1, 2, ty)
} }

4
graphics/opengl/device.go
View File

@ -54,8 +54,8 @@ func (device *Device) Update() {
g.resetOffscreen() g.resetOffscreen()
g.Clear() g.Clear()
geometryMatrix := graphics.IdentityGeometryMatrix() geometryMatrix := graphics.IdentityGeometryMatrix()
geometryMatrix.SetA(graphics.AffineMatrixElement(g.screenScale)) geometryMatrix.SetA(float64(g.screenScale))
geometryMatrix.SetD(graphics.AffineMatrixElement(g.screenScale)) geometryMatrix.SetD(float64(g.screenScale))
g.DrawTexture(device.offscreenTexture, g.DrawTexture(device.offscreenTexture,
0, 0, device.screenWidth, device.screenHeight, 0, 0, device.screenWidth, device.screenHeight,
geometryMatrix, graphics.IdentityColorMatrix()) geometryMatrix, graphics.IdentityColorMatrix())