javascript
/
tentone.escher.js
zrkadlo https://github.com/tentone/escher.js.git


			
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    <title>JSDoc: Source: objects/Image.js</title>

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    <h1 class="page-title">Source: objects/Image.js</h1>

    
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            <pre class="prettyprint source linenums"><code>"use strict";

import {Object2D} from "../Object2D.js";
import {Box2} from "../math/Box2.js";
import {Vector2} from "../math/Vector2.js";

/**
 * Image object is used to draw an image from URL.
 *
 * @class
 * @param {string} [src] Source URL of the image.
 */
function Image(src)
{
	Object2D.call(this);
	
	/**
	 * Box object containing the size of the object.
	 */
	this.box = new Box2();

	/**
	 * Image source DOM element.
	 */
	this.image = document.createElement("img");

	if(src !== undefined)
	{
		this.setImage(src);
	}
}

Image.prototype = Object.create(Object2D.prototype);

/**
 * Set the image of the object.
 *
 * Automatically sets the box size to match the image.
 *
 * @param {string} src Source URL of the image.
 */
Image.prototype.setImage = function(src)
{
	var self = this;

	this.image.onload = function()
	{
		self.box.min.set(0, 0);
		self.box.max.set(this.naturalWidth, this.naturalHeight);
	};
	this.image.src = src;
};

Image.prototype.isInside = function(point)
{
	return this.box.containsPoint(point);
};

Image.prototype.draw = function(context, viewport, canvas)
{
	if(this.image.src.length > 0)
	{
		context.drawImage(this.image, 0, 0, this.image.naturalWidth, this.image.naturalHeight, this.box.min.x, this.box.min.y, this.box.max.x - this.box.min.x, this.box.max.y - this.box.min.y);
	}
};

export {Image};
</code></pre>
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    <h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="Box.html">Box</a></li><li><a href="Box2.html">Box2</a></li><li><a href="BoxMask.html">BoxMask</a></li><li><a href="Circle.html">Circle</a></li><li><a href="DOM.html">DOM</a></li><li><a href="EventManager.html">EventManager</a></li><li><a href="Helpers.html">Helpers</a></li><li><a href="Image.html">Image</a></li><li><a href="Key.html">Key</a></li><li><a href="Line.html">Line</a></li><li><a href="Mask.html">Mask</a></li><li><a href="Matrix.html">Matrix</a></li><li><a href="Object2D.html">Object2D</a></li><li><a href="Pattern.html">Pattern</a></li><li><a href="Pointer.html">Pointer</a></li><li><a href="Renderer.html">Renderer</a></li><li><a href="Text.html">Text</a></li><li><a href="UUID.html">UUID</a></li><li><a href="Vector2.html">Vector2</a></li><li><a href="Viewport.html">Viewport</a></li></ul>
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