phaser/TS Source/renderers/canvas/SpriteRenderer.js

var Phaser;
(function (Phaser) {
    (function (Renderer) {
        /// <reference path="../../_definitions.ts" />
        (function (Canvas) {
            var SpriteRenderer = (function () {
                function SpriteRenderer(game) {
                    //  Local rendering related temp vars to help avoid gc spikes through constant var creation
                    //private _c: number = 0;
                    this._ga = 1;
                    this._sx = 0;
                    this._sy = 0;
                    this._sw = 0;
                    this._sh = 0;
                    this._dx = 0;
                    this._dy = 0;
                    this._dw = 0;
                    this._dh = 0;
                    this.game = game;
                }
                SpriteRenderer.prototype.inCamera = /**
                * Check whether this object is visible in a specific camera Rectangle.
                * @param camera {Rectangle} The Rectangle you want to check.
                * @return {bool} Return true if bounds of this sprite intersects the given Rectangle, otherwise return false.
                */
                function (camera, sprite) {
                    //  Object fixed in place regardless of the camera scrolling? Then it's always visible
                    if(sprite.transform.scrollFactor.equals(0)) {
                        return true;
                    }
                    return Phaser.RectangleUtils.intersects(sprite.cameraView, camera.screenView);
                    //return true;
                                    };
                SpriteRenderer.prototype.render = /**
                * Render this sprite to specific camera. Called by game loop after update().
                * @param camera {Camera} Camera this sprite will be rendered to.
                * @return {bool} Return false if not rendered, otherwise return true.
                */
                function (camera, sprite) {
                    Phaser.SpriteUtils.updateCameraView(camera, sprite);
                    if(sprite.transform.scale.x == 0 || sprite.transform.scale.y == 0 || sprite.texture.alpha < 0.1 || this.inCamera(camera, sprite) == false) {
                        return false;
                    }
                    //  Reset our temp vars
                    this._ga = -1;
                    this._sx = 0;
                    this._sy = 0;
                    this._sw = sprite.texture.width;
                    this._sh = sprite.texture.height;
                    //this._dx = camera.screenView.x + sprite.x - (camera.worldView.x * sprite.transform.scrollFactor.x);
                    //this._dy = camera.screenView.y + sprite.y - (camera.worldView.y * sprite.transform.scrollFactor.y);
                    this._dx = sprite.x - (camera.worldView.x * sprite.transform.scrollFactor.x);
                    this._dy = sprite.y - (camera.worldView.y * sprite.transform.scrollFactor.y);
                    this._dw = sprite.texture.width;
                    this._dh = sprite.texture.height;
                    if(sprite.animations.currentFrame !== null) {
                        this._sx = sprite.animations.currentFrame.x;
                        this._sy = sprite.animations.currentFrame.y;
                        if(sprite.animations.currentFrame.trimmed) {
                            this._dx += sprite.animations.currentFrame.spriteSourceSizeX;
                            this._dy += sprite.animations.currentFrame.spriteSourceSizeY;
                            this._sw = sprite.animations.currentFrame.spriteSourceSizeW;
                            this._sh = sprite.animations.currentFrame.spriteSourceSizeH;
                            this._dw = sprite.animations.currentFrame.spriteSourceSizeW;
                            this._dh = sprite.animations.currentFrame.spriteSourceSizeH;
                        }
                    }
                    if(sprite.modified) {
                        camera.texture.context.save();
                        camera.texture.context.setTransform(sprite.transform.local.data[0], //  scale x
                        sprite.transform.local.data[3], //  skew x
                        sprite.transform.local.data[1], //  skew y
                        sprite.transform.local.data[4], //  scale y
                        this._dx, //  translate x
                        this._dy);
                        //  translate y
                        this._dx = sprite.transform.origin.x * -this._dw;
                        this._dy = sprite.transform.origin.y * -this._dh;
                    } else {
                        this._dx -= (this._dw * sprite.transform.origin.x);
                        this._dy -= (this._dh * sprite.transform.origin.y);
                    }
                    if(sprite.crop) {
                        this._sx += sprite.crop.x * sprite.transform.scale.x;
                        this._sy += sprite.crop.y * sprite.transform.scale.y;
                        this._sw = sprite.crop.width * sprite.transform.scale.x;
                        this._sh = sprite.crop.height * sprite.transform.scale.y;
                        this._dx += sprite.crop.x * sprite.transform.scale.x;
                        this._dy += sprite.crop.y * sprite.transform.scale.y;
                        this._dw = sprite.crop.width * sprite.transform.scale.x;
                        this._dh = sprite.crop.height * sprite.transform.scale.y;
                    }
                    this._sx = Math.floor(this._sx);
                    this._sy = Math.floor(this._sy);
                    this._sw = Math.floor(this._sw);
                    this._sh = Math.floor(this._sh);
                    this._dx = Math.floor(this._dx);
                    this._dy = Math.floor(this._dy);
                    this._dw = Math.floor(this._dw);
                    this._dh = Math.floor(this._dh);
                    if(this._sw <= 0 || this._sh <= 0 || this._dw <= 0 || this._dh <= 0) {
                        return false;
                    }
                    //  Global Composite Ops
                    if(sprite.texture.globalCompositeOperation) {
                        camera.texture.context.save();
                        camera.texture.context.globalCompositeOperation = sprite.texture.globalCompositeOperation;
                    }
                    //  Alpha
                    if(sprite.texture.alpha !== 1 && camera.texture.context.globalAlpha != sprite.texture.alpha) {
                        this._ga = sprite.texture.context.globalAlpha;
                        camera.texture.context.globalAlpha = sprite.texture.alpha;
                    }
                    if(sprite.texture.opaque) {
                        camera.texture.context.fillStyle = sprite.texture.backgroundColor;
                        camera.texture.context.fillRect(this._dx, this._dy, this._dw, this._dh);
                    }
                    if(sprite.texture.loaded) {
                        camera.texture.context.drawImage(sprite.texture.texture, //	Source Image
                        this._sx, //	Source X (location within the source image)
                        this._sy, //	Source Y
                        this._sw, //	Source Width
                        this._sh, //	Source Height
                        this._dx, //	Destination X (where on the canvas it'll be drawn)
                        this._dy, //	Destination Y
                        this._dw, //	Destination Width (always same as Source Width unless scaled)
                        this._dh);
                        //	Destination Height (always same as Source Height unless scaled)
                                            }
                    if(sprite.modified || sprite.texture.globalCompositeOperation) {
                        camera.texture.context.restore();
                    }
                    if(this._ga > -1) {
                        camera.texture.context.globalAlpha = this._ga;
                    }
                    sprite.renderOrderID = this.game.renderer.renderCount;
                    this.game.renderer.renderCount++;
                    return true;
                };
                return SpriteRenderer;
            })();
            Canvas.SpriteRenderer = SpriteRenderer;            
        })(Renderer.Canvas || (Renderer.Canvas = {}));
        var Canvas = Renderer.Canvas;
    })(Phaser.Renderer || (Phaser.Renderer = {}));
    var Renderer = Phaser.Renderer;
})(Phaser || (Phaser = {}));