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Revert "Feature fencing"

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Ray Schamp 2017-02-15 09:38:23 -05:00 • committed by GitHub
parent ac34ba7a13
commit 42e5e724c2
1 changed files with 0 additions and 40 deletions

40
src/RenderWebGL.js
View file

@ -736,46 +736,6 @@ class RenderWebGL extends EventEmitter {
drawable.updateProperties(properties);
}
/**
* Update the position object's x & y members to keep the drawable fenced in view.
* @param {int} drawableID - The ID of the Drawable to update.
* @param {Array.<number, number>} position to be fenced - An array of type [x, y]
* @return {Array.<number, number>} The fenced position as an array [x, y]
*/
getFencedPositionOfDrawable (drawableID, position) {
let x = position[0];
let y = position[1];
const drawable = this._allDrawables[drawableID];
if (!drawable) {
// TODO: fix whatever's wrong in the VM which causes this, then add a warning or throw here.
// Right now this happens so much on some projects that a warning or exception here can hang the browser.
return [x, y];
}
const dx = x - drawable._position[0];
const dy = y - drawable._position[1];
const aabb = drawable.getFastBounds();
// This is my best guess at the fencing in Scratch 2,
// but I suspect it may need further work to be precisely the same?
const sx = this._xRight - Math.min(15, Math.floor((aabb.right - aabb.left) / 2));
if (aabb.right + dx < -sx) {
x = drawable._position[0] - (sx + aabb.right);
} else if (aabb.left + dx > sx) {
x = drawable._position[0] + (sx - aabb.left);
}
const sy = this._yTop - Math.min(15, Math.floor((aabb.top - aabb.bottom) / 2));
if (aabb.top + dy < -sy) {
y = drawable._position[1] - (sy + aabb.top);
} else if (aabb.bottom + dy > sy) {
y = drawable._position[1] + (sy - aabb.bottom);
}
return [x, y];
}
/**
* Clear a pen layer.
* @param {int} penSkinID - the unique ID of a Pen Skin.