esengine/source/src/ECS/Components/SpriteRenderer.ts

class SpriteRenderer extends RenderableComponent {
    private _sprite: Sprite;
    protected bitmap: egret.Bitmap;

    /** 应该由这个精灵显示的精灵 */
    public get sprite(): Sprite {
        return this._sprite;
    }
    /** 应该由这个精灵显示的精灵 */
    public set sprite(value: Sprite) {
        this.setSprite(value);
    }

    public setSprite(sprite: Sprite): SpriteRenderer {
        this.removeChildren();
        this._sprite = sprite;
        if (this._sprite) {
            this.anchorOffsetX = this._sprite.origin.x / this._sprite.sourceRect.width;
            this.anchorOffsetY = this._sprite.origin.y / this._sprite.sourceRect.height;
        }
        this.bitmap = new egret.Bitmap(sprite.texture2D);
        this.addChild(this.bitmap);

        return this;
    }

    public setColor(color: number): SpriteRenderer {
        let colorMatrix = [
            1, 0, 0, 0, 0,
            0, 1, 0, 0, 0,
            0, 0, 1, 0, 0,
            0, 0, 0, 1, 0
        ];
        colorMatrix[0] = Math.floor(color / 256 / 256) / 255;
        colorMatrix[6] = Math.floor(color / 256 % 256) / 255;
        colorMatrix[12] = color % 256 / 255;
        let colorFilter = new egret.ColorMatrixFilter(colorMatrix);
        this.filters = [colorFilter];

        return this;
    }

    public isVisibleFromCamera(camera: Camera): boolean {
        this.isVisible = new Rectangle(0, 0, this.stage.stageWidth, this.stage.stageHeight).intersects(this.bounds);
        this.visible = this.isVisible;
        return this.isVisible;
    }

    /** 渲染处理 在每个模块中处理各自的渲染逻辑 */
    public render(camera: Camera) {
        if (this.x != -camera.position.x + camera.origin.x ||
            this.y != -camera.position.y + camera.origin.y) {
            this.x = -camera.position.x + camera.origin.x;
            this.y = -camera.position.y + camera.origin.y;
            this.entity.onEntityTransformChanged(TransformComponent.position);
        }
    }

    public onRemovedFromEntity() {
        if (this.parent)
            this.parent.removeChild(this);
    }

    public reset() {
    }
}