github/scratch-render
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

cache PenSkin's _canvasSize

Browse Source
This commit is contained in:
Michael "Z" Goddard 2019-06-12 16:09:07 -04:00
parent 24b535eb76
commit 14b01bd63c
No known key found for this signature in database
GPG Key ID: 762CD40DD5349872
1 changed files with 13 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/PenSkin.js
View File

@ -88,6 +88,9 @@ class PenSkin extends Skin {
/** @type {HTMLCanvasElement} */
this._canvas = document.createElement('canvas');
/** @type {Array<number>} */
this._canvasSize = twgl.v3.create();
/** @type {WebGLTexture} */
this._texture = null;
@ -165,7 +168,7 @@ class PenSkin extends Skin {
* @return {Array<number>} the "native" size, in texels, of this skin. [width, height]
*/
get size () {
return [this._canvas.width, this._canvas.height];
return this._canvasSize;
}
/**
@ -188,13 +191,13 @@ class PenSkin extends Skin {
clear () {
const gl = this._renderer.gl;
twgl.bindFramebufferInfo(gl, this._framebuffer);
/* Reset framebuffer to transparent black */
gl.clearColor(0, 0, 0, 0);
gl.clear(gl.COLOR_BUFFER_BIT);
const ctx = this._canvas.getContext('2d');
ctx.clearRect(0, 0, this._canvas.width, this._canvas.height);
ctx.clearRect(0, 0, this._canvasSize[0], this._canvasSize[1]);
this._silhouetteDirty = true;
}
@ -451,7 +454,7 @@ class PenSkin extends Skin {
* @param {number} x - centered at x
* @param {number} y - centered at y
*/
_drawRectangle (currentShader, texture, bounds, x = -this._canvas.width / 2, y = this._canvas.height / 2) {
_drawRectangle (currentShader, texture, bounds, x = -this._canvasSize[0] / 2, y = this._canvasSize[1] / 2) {
const gl = this._renderer.gl;
const projection = twgl.m4.ortho(
@ -514,7 +517,7 @@ class PenSkin extends Skin {
* @param {number} x - texture centered at x
* @param {number} y - texture centered at y
*/
_drawToBuffer (texture = this._texture, x = -this._canvas.width / 2, y = this._canvas.height / 2) {
_drawToBuffer (texture = this._texture, x = -this._canvasSize[0] / 2, y = this._canvasSize[1] / 2) {
if (texture !== this._texture && this._canvasDirty) {
this._drawToBuffer();
}
@ -528,7 +531,7 @@ class PenSkin extends Skin {
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this._canvas);
const ctx = this._canvas.getContext('2d');
ctx.clearRect(0, 0, this._canvas.width, this._canvas.height);
ctx.clearRect(0, 0, this._canvasSize[0], this._canvasSize[1]);
this._canvasDirty = false;
}
@ -564,8 +567,8 @@ class PenSkin extends Skin {
this._bounds = new Rectangle();
this._bounds.initFromBounds(width / 2, width / -2, height / 2, height / -2);
this._canvas.width = width;
this._canvas.height = height;
this._canvas.width = this._canvasSize[0] = width;
this._canvas.height = this._canvasSize[1] = height;
this._rotationCenter[0] = width / 2;
this._rotationCenter[1] = height / 2;
@ -651,8 +654,8 @@ class PenSkin extends Skin {
this._renderer.enterDrawRegion(this._toBufferDrawRegionId);
// Sample the framebuffer's pixels into the silhouette instance
const skinPixels = new Uint8Array(Math.floor(this._canvas.width * this._canvas.height * 4));
gl.readPixels(0, 0, this._canvas.width, this._canvas.height, gl.RGBA, gl.UNSIGNED_BYTE, skinPixels);
const skinPixels = new Uint8Array(Math.floor(this._canvasSize[0] * this._canvasSize[1] * 4));
gl.readPixels(0, 0, this._canvasSize[0], this._canvasSize[1], gl.RGBA, gl.UNSIGNED_BYTE, skinPixels);
const skinCanvas = this._canvas;
skinCanvas.width = bounds.width;