'use strict';
exports.__esModule = true;
var _CanvasRenderer = require('../../renderers/canvas/CanvasRenderer');
var _CanvasRenderer2 = _interopRequireDefault(_CanvasRenderer);
var _const = require('../../const');
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
* @author Mat Groves
*
* Big thanks to the very clever Matt DesLauriers <mattdesl> https://github.com/mattdesl/
* for creating the original pixi version!
* Also a thanks to https://github.com/bchevalier for tweaking the tint and alpha so that they
* now share 4 bytes on the vertex buffer
*
* Heavily inspired by LibGDX's CanvasGraphicsRenderer:
* https://github.com/libgdx/libgdx/blob/1.0.0/gdx/src/com/badlogic/gdx/graphics/glutils/ShapeRenderer.java
*/
/**
* Renderer dedicated to drawing and batching graphics objects.
*
* @class
* @private
* @memberof PIXI
*/
var CanvasGraphicsRenderer = function () {
/**
* @param {PIXI.CanvasRenderer} renderer - The current PIXI renderer.
*/
function CanvasGraphicsRenderer(renderer) {
_classCallCheck(this, CanvasGraphicsRenderer);
this.renderer = renderer;
}
/**
* Renders a Graphics object to a canvas.
*
* @param {PIXI.Graphics} graphics - the actual graphics object to render
*/
CanvasGraphicsRenderer.prototype.render = function render(graphics) {
var renderer = this.renderer;
var context = renderer.context;
var worldAlpha = graphics.worldAlpha;
var transform = graphics.transform.worldTransform;
var resolution = renderer.resolution;
// if the tint has changed, set the graphics object to dirty.
if (this._prevTint !== this.tint) {
this.dirty = true;
}
context.setTransform(transform.a * resolution, transform.b * resolution, transform.c * resolution, transform.d * resolution, transform.tx * resolution, transform.ty * resolution);
if (graphics.dirty) {
this.updateGraphicsTint(graphics);
graphics.dirty = false;
}
renderer.setBlendMode(graphics.blendMode);
for (var i = 0; i < graphics.graphicsData.length; i++) {
var data = graphics.graphicsData[i];
var shape = data.shape;
var fillColor = data._fillTint;
var lineColor = data._lineTint;
context.lineWidth = data.lineWidth;
if (data.type === _const.SHAPES.POLY) {
context.beginPath();
this.renderPolygon(shape.points, shape.closed, context);
for (var j = 0; j < data.holes.length; j++) {
this.renderPolygon(data.holes[j].points, true, context);
}
if (data.fill) {
context.globalAlpha = data.fillAlpha * worldAlpha;
context.fillStyle = '#' + ('00000' + (fillColor | 0).toString(16)).substr(-6);
context.fill();
}
if (data.lineWidth) {
context.globalAlpha = data.lineAlpha * worldAlpha;
context.strokeStyle = '#' + ('00000' + (lineColor | 0).toString(16)).substr(-6);
context.stroke();
}
} else if (data.type === _const.SHAPES.RECT) {
if (data.fillColor || data.fillColor === 0) {
context.globalAlpha = data.fillAlpha * worldAlpha;
context.fillStyle = '#' + ('00000' + (fillColor | 0).toString(16)).substr(-6);
context.fillRect(shape.x, shape.y, shape.width, shape.height);
}
if (data.lineWidth) {
context.globalAlpha = data.lineAlpha * worldAlpha;
context.strokeStyle = '#' + ('00000' + (lineColor | 0).toString(16)).substr(-6);
context.strokeRect(shape.x, shape.y, shape.width, shape.height);
}
} else if (data.type === _const.SHAPES.CIRC) {
// TODO - need to be Undefined!
context.beginPath();
context.arc(shape.x, shape.y, shape.radius, 0, 2 * Math.PI);
context.closePath();
if (data.fill) {
context.globalAlpha = data.fillAlpha * worldAlpha;
context.fillStyle = '#' + ('00000' + (fillColor | 0).toString(16)).substr(-6);
context.fill();
}
if (data.lineWidth) {
context.globalAlpha = data.lineAlpha * worldAlpha;
context.strokeStyle = '#' + ('00000' + (lineColor | 0).toString(16)).substr(-6);
context.stroke();
}
} else if (data.type === _const.SHAPES.ELIP) {
// ellipse code taken from: http://stackoverflow.com/questions/2172798/how-to-draw-an-oval-in-html5-canvas
var w = shape.width * 2;
var h = shape.height * 2;
var x = shape.x - w / 2;
var y = shape.y - h / 2;
context.beginPath();
var kappa = 0.5522848;
var ox = w / 2 * kappa; // control point offset horizontal
var oy = h / 2 * kappa; // control point offset vertical
var xe = x + w; // x-end
var ye = y + h; // y-end
var xm = x + w / 2; // x-middle
var ym = y + h / 2; // y-middle
context.moveTo(x, ym);
context.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y);
context.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym);
context.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye);
context.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym);
context.closePath();
if (data.fill) {
context.globalAlpha = data.fillAlpha * worldAlpha;
context.fillStyle = '#' + ('00000' + (fillColor | 0).toString(16)).substr(-6);
context.fill();
}
if (data.lineWidth) {
context.globalAlpha = data.lineAlpha * worldAlpha;
context.strokeStyle = '#' + ('00000' + (lineColor | 0).toString(16)).substr(-6);
context.stroke();
}
} else if (data.type === _const.SHAPES.RREC) {
var rx = shape.x;
var ry = shape.y;
var width = shape.width;
var height = shape.height;
var radius = shape.radius;
var maxRadius = Math.min(width, height) / 2 | 0;
radius = radius > maxRadius ? maxRadius : radius;
context.beginPath();
context.moveTo(rx, ry + radius);
context.lineTo(rx, ry + height - radius);
context.quadraticCurveTo(rx, ry + height, rx + radius, ry + height);
context.lineTo(rx + width - radius, ry + height);
context.quadraticCurveTo(rx + width, ry + height, rx + width, ry + height - radius);
context.lineTo(rx + width, ry + radius);
context.quadraticCurveTo(rx + width, ry, rx + width - radius, ry);
context.lineTo(rx + radius, ry);
context.quadraticCurveTo(rx, ry, rx, ry + radius);
context.closePath();
if (data.fillColor || data.fillColor === 0) {
context.globalAlpha = data.fillAlpha * worldAlpha;
context.fillStyle = '#' + ('00000' + (fillColor | 0).toString(16)).substr(-6);
context.fill();
}
if (data.lineWidth) {
context.globalAlpha = data.lineAlpha * worldAlpha;
context.strokeStyle = '#' + ('00000' + (lineColor | 0).toString(16)).substr(-6);
context.stroke();
}
}
}
};
/**
* Updates the tint of a graphics object
*
* @private
* @param {PIXI.Graphics} graphics - the graphics that will have its tint updated
*/
CanvasGraphicsRenderer.prototype.updateGraphicsTint = function updateGraphicsTint(graphics) {
graphics._prevTint = graphics.tint;
var tintR = (graphics.tint >> 16 & 0xFF) / 255;
var tintG = (graphics.tint >> 8 & 0xFF) / 255;
var tintB = (graphics.tint & 0xFF) / 255;
for (var i = 0; i < graphics.graphicsData.length; ++i) {
var data = graphics.graphicsData[i];
var fillColor = data.fillColor | 0;
var lineColor = data.lineColor | 0;
// super inline cos im an optimization NAZI :)
data._fillTint = ((fillColor >> 16 & 0xFF) / 255 * tintR * 255 << 16) + ((fillColor >> 8 & 0xFF) / 255 * tintG * 255 << 8) + (fillColor & 0xFF) / 255 * tintB * 255;
data._lineTint = ((lineColor >> 16 & 0xFF) / 255 * tintR * 255 << 16) + ((lineColor >> 8 & 0xFF) / 255 * tintG * 255 << 8) + (lineColor & 0xFF) / 255 * tintB * 255;
}
};
/**
* Renders a polygon.
*
* @param {PIXI.Point[]} points - The points to render
* @param {boolean} close - Should the polygon be closed
* @param {CanvasRenderingContext2D} context - The rendering context to use
*/
CanvasGraphicsRenderer.prototype.renderPolygon = function renderPolygon(points, close, context) {
context.moveTo(points[0], points[1]);
for (var j = 1; j < points.length / 2; ++j) {
context.lineTo(points[j * 2], points[j * 2 + 1]);
}
if (close) {
context.closePath();
}
};
/**
* destroy graphics object
*
*/
CanvasGraphicsRenderer.prototype.destroy = function destroy() {
this.renderer = null;
};
return CanvasGraphicsRenderer;
}();
exports.default = CanvasGraphicsRenderer;
_CanvasRenderer2.default.registerPlugin('graphics', CanvasGraphicsRenderer);
//# sourceMappingURL=CanvasGraphicsRenderer.js.map
