如何在pixi.js中创建具有良好性能的动画tile ?
How do I create an animated tile in pixi.js with good performance?
我如何使用PIXI js从精灵表动画使用TiledSprites?我需要从精灵表中添加一个平铺精灵背景。
目前有API调用动画平铺精灵在PIXI.js API。我创建了下面的类来帮助我加载和动画平铺背景。
/////////////////////////////////////////////////////////////////////////////
/// Tiling Sprite Animation
/////////////////////////////////////////////////////////////////////////////
(function() {
PIXI.TilingSpriteAnimation = function(texture, frames, rows, frametime, loop) {
PIXI.TilingSprite.call(
this, texture,
VIEWPORTWIDTH,
this._texture.baseTexture.height);
this._stop = true;
this._texture = new PIXI.Texture(texture);
this.frameTime = frametime;
this.loop = loop || true;
this.curX = 0;
this.curY = 0;
this.fh = this._texture.height / rows;
this.fw = this._texture.width / frames;
this.ticks = 0;
this.maxFrames = frames;
this.maxRows = rows;
this.done = false;
this.calculateFrame();
};
PIXI.TilingSpriteAnimation.prototype = Object.create( PIXI.TilingSprite.prototype );
PIXI.TilingSpriteAnimation.prototype.constructor = PIXI.TilingSpriteAnimation;
Object.defineProperty(PIXI.TilingSpriteAnimation.prototype, 'texture', {
get: function() {
return this._texture;
}
});
PIXI.TilingSpriteAnimation.prototype.update = function() {
console.log(this.ticks);
if(!this._stop) {
this.ticks += 1;
}
if (this.done == false) {
if (this.ticks >= this.frameTime) {
this.curX++;
this.ticks = 0;
if (this.curX == this.maxFrames) {
this.curX = 0;
this.curY++;
if (this.curY == this.maxRows) {
this.curY = 0;
if (!this.loop)
this.done = true;
}
}
this.calculateFrame();
}
}
};
PIXI.TilingSpriteAnimation.prototype.goto = function(frame, row) {
this.curX = frame;
this.curY = row || 0;
};
PIXI.TilingSpriteAnimation.prototype.stop = function() {
this._stop = true;
};
PIXI.TilingSpriteAnimation.prototype.play = function() {
this._stop = false;
};
PIXI.TilingSpriteAnimation.prototype.calculateFrame = function() {
this.texture.frame.x = this.curX * this.fw;
this.texture.frame.y = this.curY * this.fh;
this.texture.frame.width = this.fw;
this.texture.frame.height = this.fh;
this.texture.setFrame(this.texture.frame);
this.generateTilingTexture(this.texture);
};
}).call(this);
然而,这段代码效率非常低,因为每次进入一个新帧时,它都会计算一个新的TiledTexture。我该如何优化呢? 我为此挣扎了一段时间,但得出了以下结论。我希望这对你有帮助。
/////////////////////////////////////////////////////////////////////////////
/// Tiling Sprite Animation
/////////////////////////////////////////////////////////////////////////////
(function() {
PIXI.TilingSpriteAnimation = function(texture, frames, frametime, loop) {
PIXI.TilingSprite.call(
this, texture,
VIEWPORTWIDTH,
VIEWPORTHEIGHT);
this._stop = true;
this._texture = new PIXI.Texture(texture);
this.frameTime = frametime;
this.loop = loop || true;
this.curX = 0;
this.fh = this._texture.height;
this.fw = this._texture.width / frames;
this.ticks = 0;
this.maxFrames = frames;
for (var i=0;i<frames;i++){
this.preLoadFrame(i);
}
this.calculateFrame();
};
PIXI.TilingSpriteAnimation.prototype = Object.create( PIXI.TilingSprite.prototype );
PIXI.TilingSpriteAnimation.prototype.constructor = PIXI.TilingSpriteAnimation;
Object.defineProperty(PIXI.TilingSpriteAnimation.prototype, 'texture', {
get: function() {
return this._texture;
}
});
PIXI.TilingSpriteAnimation.prototype.update = function() {
if (this._stop == false) {
this.ticks += 1;
if (this.ticks >= this.frameTime) {
this.curX++;
this.ticks = 0;
if (this.curX == this.maxFrames) {
this.curX = 0;
if (!this.loop) {
this._stop = true;
}
}
this.calculateFrame();
}
}
};
PIXI.TilingSpriteAnimation.prototype.goto = function(frame) {
this.curX = frame;
};
PIXI.TilingSpriteAnimation.prototype.stop = function() {
this._stop = true;
};
PIXI.TilingSpriteAnimation.prototype.play = function() {
this._stop = false;
};
PIXI.TilingSpriteAnimation.prototype.calculateFrame = function() {
this.tilingTexture = PIXI.Texture.fromFrame("texture" + this.curX);
};
PIXI.TilingSpriteAnimation.prototype.preLoadFrame = function(frame) {
var text = new PIXI.TilingSprite(this.texture);
text.texture.frame.x = frame * this.fw;
text.texture.frame.y = 0;
text.texture.frame.width = this.fw;
text.texture.frame.height = this.fh;
text.texture.setFrame(text.texture.frame);
text.generateTilingTexture(text);
PIXI.Texture.addTextureToCache(text.tilingTexture, "texture" + frame)
};
}).call(this);
相关文章:
- 设置1400个Raphael.js对象的不透明度动画会影响动画性能
- HTML5 动画性能
- 使用 KineticJS 提高动画性能
- 性能:CSS3 动画与 HTML5 Canvas
- 始终运行的 Web 应用程序上的动画滞后和性能问题
- Javascript/jQuery文本动画性能缓慢
- Webgl 动画纹理性能与画布绘制图像性能
- 悬停时连续动画(性能)
- css3动画性能差(仅适用于Chrome)
- Jquery/CSS动画性能
- 使用gifshot生成动画gif时出现性能问题
- 为DOM深处的元素设置动画真的会影响性能吗
- 浏览器滚动条动画性能
- 用angularjs在移动设备上制作动画时的性能问题
- jQuery动画性能与移动Safari
- 使用嵌套组改进SVG动画性能
- Javascript setInterval性能因多个动画而下降
- 性能优化标记动画
- KineticJS:Firefox与Chrome的动画性能
- 如何在pixi.js中创建具有良好性能的动画tile ?