phaser/v3/src/create/GenerateTexture.js
2017-10-11 17:06:13 +01:00

72 lines
1.8 KiB
JavaScript

var GetValue = require('../utils/object/GetValue');
var Arne16 = require('./palettes/Arne16');
var CanvasPool = require('../display/canvas/CanvasPool');
var GenerateTexture = function (config)
{
var data = GetValue(config, 'data', []);
var canvas = GetValue(config, 'canvas', null);
var palette = GetValue(config, 'palette', Arne16);
var pixelWidth = GetValue(config, 'pixelWidth', 1);
var pixelHeight = GetValue(config, 'pixelHeight', pixelWidth);
var resizeCanvas = GetValue(config, 'resizeCanvas', true);
var clearCanvas = GetValue(config, 'clearCanvas', true);
var preRender = GetValue(config, 'preRender', null);
var postRender = GetValue(config, 'postRender', null);
var width = Math.floor(Math.abs(data[0].length * pixelWidth));
var height = Math.floor(Math.abs(data.length * pixelHeight));
if (!canvas)
{
canvas = CanvasPool.create2D(this, width, height);
resizeCanvas = false;
clearCanvas = false;
}
if (resizeCanvas)
{
canvas.width = width;
canvas.height = height;
}
var ctx = canvas.getContext('2d');
if (clearCanvas)
{
ctx.clearRect(0, 0, width, height);
}
// preRender Callback?
if (preRender)
{
preRender(canvas, ctx);
}
// Draw it
for (var y = 0; y < data.length; y++)
{
var row = data[y];
for (var x = 0; x < row.length; x++)
{
var d = row[x];
if (d !== '.' && d !== ' ')
{
ctx.fillStyle = palette[d];
ctx.fillRect(x * pixelWidth, y * pixelHeight, pixelWidth, pixelHeight);
}
}
}
// postRender Callback?
if (postRender)
{
postRender(canvas, ctx);
}
return canvas;
};
module.exports = GenerateTexture;