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internal/affine: Refactoring: UnsafeScaleElements -> scaleElements
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3406430956
commit
e5c051a437
@ -44,7 +44,6 @@ var (
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type ColorM interface {
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IsIdentity() bool
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ScaleOnly() bool
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UnsafeScaleElements() *[4]float32
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UnsafeElements() (*[16]float32, *[4]float32)
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Apply(clr color.Color) color.Color
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@ -67,6 +66,8 @@ type ColorM interface {
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// Translate translates the matrix by (r, g, b, a).
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Translate(r, g, b, a float32) ColorM
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scaleElements() (r, g, b, a float32)
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}
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func ColorMString(c ColorM) string {
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@ -164,16 +165,16 @@ func (c *colorMImplBodyTranslate) ScaleOnly() bool {
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return true
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}
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func (c ColorMIdentity) UnsafeScaleElements() *[4]float32 {
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return &[...]float32{1, 1, 1, 1}
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func (c ColorMIdentity) scaleElements() (r, g, b, a float32) {
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return 1, 1, 1, 1
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}
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func (c colorMImplScale) UnsafeScaleElements() *[4]float32 {
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return &c.scale
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func (c colorMImplScale) scaleElements() (r, g, b, a float32) {
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return c.scale[0], c.scale[1], c.scale[2], c.scale[3]
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}
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func (c *colorMImplBodyTranslate) UnsafeScaleElements() *[4]float32 {
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return &[...]float32{c.body[0], c.body[5], c.body[10], c.body[15]}
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func (c *colorMImplBodyTranslate) scaleElements() (r, g, b, a float32) {
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return c.body[0], c.body[5], c.body[10], c.body[15]
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}
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func colorToFloat32s(clr color.Color) (float32, float32, float32, float32) {
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@ -452,10 +453,19 @@ func (c colorMImplScale) Equals(other ColorM) bool {
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if !other.ScaleOnly() {
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return false
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}
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for i, s := range other.UnsafeScaleElements() {
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if c.scale[i] != s {
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return false
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}
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r, g, b, a := other.scaleElements()
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if c.scale[0] != r {
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return false
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}
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if c.scale[1] != g {
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return false
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}
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if c.scale[2] != b {
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return false
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}
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if c.scale[3] != a {
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return false
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}
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return true
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}
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@ -477,8 +487,7 @@ func (c colorMImplScale) Concat(other ColorM) ColorM {
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}
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if other.ScaleOnly() {
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s := other.UnsafeScaleElements()
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return c.Scale(s[0], s[1], s[2], s[3])
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return c.Scale(other.scaleElements())
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}
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lhsb, lhst := other.UnsafeElements()
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@ -535,9 +544,9 @@ func (c colorMImplScale) Scale(r, g, b, a float32) ColorM {
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func (c *colorMImplBodyTranslate) Scale(r, g, b, a float32) ColorM {
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if c.ScaleOnly() {
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s := c.UnsafeScaleElements()
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sr, sg, sb, sa := c.scaleElements()
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return colorMImplScale{
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scale: [...]float32{r * s[0], g * s[1], b * s[2], a * s[3]},
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scale: [...]float32{r * sr, g * sg, b * sb, a * sa},
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}
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}
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