68 lines
1.9 KiB
TypeScript
68 lines
1.9 KiB
TypeScript
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module es {
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export class Color {
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/**
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* 存储为RGBA
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*/
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private _packedValue: number;
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/**
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* 从代表红、绿、蓝和alpha值的标量构造RGBA颜色。
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*/
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constructor(r: number, g: number,b: number, alpha: number){
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if (((r | g |b | alpha) & 0xFFFFFF00) != 0){
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let clampedR = MathHelper.clamp(r, 0, 255);
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let clampedG = MathHelper.clamp(g, 0, 255);
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let clampedB = MathHelper.clamp(b, 0, 255);
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let clampedA = MathHelper.clamp(alpha, 0, 255);
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this._packedValue = (clampedA << 24) | (clampedB << 16) | (clampedG << 8) | (clampedR);
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}else{
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this._packedValue = (alpha << 24 ) | (b << 16) | (g << 8) | r;
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}
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}
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public get b(){
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return this._packedValue >> 16;
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}
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public set b(value: number){
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this._packedValue = (this._packedValue & 0xff00ffff) | (value << 16);
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}
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public get g(){
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return this._packedValue >> 8;
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}
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public set g(value: number){
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this._packedValue = (this._packedValue & 0xffff00ff) | (value << 8)
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}
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public get r(){
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return this._packedValue;
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}
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public set r(value: number){
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this._packedValue = (this._packedValue & 0xffffff00) | value;
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}
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public get a(){
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return this._packedValue >> 24;
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}
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public set a(value: number){
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this._packedValue = (this._packedValue & 0x00ffffff) | (value << 24);
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}
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public get packedValue(){
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return this._packedValue;
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}
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public set packedValue(value: number){
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this._packedValue = value;
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}
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public equals(other: Color):boolean{
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return this._packedValue == other._packedValue;
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}
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}
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}
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