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simplePlot.js
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simplePlot.js
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/*
* Copyright (C) 2015 Stefano D'Angelo <zanga.mail@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*** Simplified plotting API (one map, one frame, one grid, many curves). ***/
canvasPlot.simplePlot = {
/* Read/write members. */
map: null,
frame: null,
grid: null,
curves: null, // Array of curve objects
init: function (map, frame, grid, curves) {
if (frame)
this.frame = frame;
else {
this.frame = Object.create(this.frame);
this.frame.init(null);
}
if (map)
this.map = map;
else {
this.map = Object.create(this.map);
this.map.init(null, null);
}
if (grid)
this.grid = grid;
else {
this.grid = Object.create(this.grid);
this.grid.init(null);
}
this.curves = curves ? curves : [];
},
/* updateFrameArea tells whether to update the area member of frame. */
update: function (updateFrameArea) {
if (updateFrameArea)
this.frame.area.update();
this.frame.update();
this.map.update(this.frame.innerArea);
this.grid.update(this.map);
for (var i = 0; i < this.curves.length; i++)
this.curves[i].update(this.map);
},
/* curveDrawer is the curve-drawing object. */
draw: function (ctx, curveDrawer) {
this.grid.draw(ctx, this.frame.innerArea);
for (var i = 0; i < this.curves.length; i++)
this.curves[i].draw(ctx, this.frame.innerArea,
curveDrawer);
this.frame.draw(ctx);
}
};
/* The necessary bookkepping. */
canvasPlot.simplePlot.map = Object.create(canvasPlot.map);
canvasPlot.simplePlot.frame = Object.create(canvasPlot.frame);
canvasPlot.simplePlot.grid = Object.create(canvasPlot.grid);