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/*
HTML5 Canvas functions for ATS2
*/
/* ****** ****** */
/**
Author: Will Blair
Start Time: September 2013
Authoremail: wdblairATcsDOTbuDOTedu
*/
/**
Author: Hongwei Xi
Start Time: October 2013
Authoremail: hwxi AT cs DOT bu DOT edu
*/
/* ****** ****** */
var mydraw_html5_canvas2d =
{
$MyCanvas: {
PI: Math.PI,
/*
The C string pointers identify contexts.
*/
contexts: {}
},
atscntrb_libatshwxi_canvas2d_make:
function (ptr) {
var id = Pointer_stringify(ptr);
var canvas = document.getElementById(id);
if (canvas.getContext) {
MyCanvas.contexts[ptr] = canvas.getContext("2d");
} else {
throw "mydraw_html5_canvas2d: 2D-canvas is not supported";
}
return ptr;
},
atscntrb_libatshwxi_canvas2d_free:
function (ptr) {
MyCanvas.contexts[ptr] = null;
},
atscntrb_libatshwxi_canvas2d_beginPath:
function (ptr) {
MyCanvas.contexts[ptr].beginPath();
},
atscntrb_libatshwxi_canvas2d_closePath:
function (ptr) {
MyCanvas.contexts[ptr].closePath();
},
atscntrb_libatshwxi_canvas2d_moveTo:
function (ptr, x, y) {
MyCanvas.contexts[ptr].moveTo(x, y);
},
atscntrb_libatshwxi_canvas2d_lineTo:
function (ptr, x, y) {
MyCanvas.contexts[ptr].lineTo(x, y);
},
atscntrb_libatshwxi_canvas2d_translate:
function (ptr, x, y) {
MyCanvas.contexts[ptr].translate(x, y);
},
atscntrb_libatshwxi_canvas2d_scale:
function (ptr, sx, sy) {
MyCanvas.contexts[ptr].scale(sx, sy);
},
atscntrb_libatshwxi_canvas2d_rotate:
function (ptr, angle) {
MyCanvas.contexts[ptr].rotate(angle);
},
atscntrb_libatshwxi_canvas2d_rect:
function (ptr, xul, yul, width, height) {
MyCanvas.contexts[ptr].rect(xul, yul, width, height);
},
atscntrb_libatshwxi_canvas2d_arc:
function (ptr, xc, yc, rad, angle_beg, angle_end, CCW) {
MyCanvas.contexts[ptr].arc(xc, yc, rad, angle_beg, angle_end, CCW);
},
atscntrb_libatshwxi_canvas2d_fill:
function (ptr) {
MyCanvas.contexts[ptr].fill();
},
atscntrb_libatshwxi_canvas2d_fillStyle_string:
function (ptr, string) {
var style = Pointer_stringify(string);
MyCanvas.contexts[ptr].fillStyle = style;
},
atscntrb_libatshwxi_canvas2d_stroke:
function (ptr) {
MyCanvas.contexts[ptr].stroke();
},
atscntrb_libatshwxi_canvas2d_strokeStyle_string:
function (ptr, string) {
var style = Pointer_stringify(string);
MyCanvas.contexts[ptr].strokeStyle = style;
},
atscntrb_libatshwxi_canvas2d_clearRect:
function (ptr, xul, yul, width, height) {
MyCanvas.contexts[ptr].clearRect(xul, yul, width, height);
},
atscntrb_libatshwxi_canvas2d_save:
function (ptr) {
MyCanvas.contexts[ptr].save();
},
atscntrb_libatshwxi_canvas2d_restore:
function (ptr) {
MyCanvas.contexts[ptr].restore();
},
}
/* ****** ****** */
autoAddDeps(mydraw_html5_canvas2d, '$MyCanvas');
mergeInto(LibraryManager.library, mydraw_html5_canvas2d);
/* ****** ****** */
/* end of [mydraw_html5_canvas2d.js] */
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