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Update EnvironmentController.js

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slightly improved zooming
This commit is contained in:
BCM28
2023-11-06 23:38:41 +00:00
committed by GitHub
parent 1c2091502a
commit ab18382e0d
1 changed files with 7 additions and 4 deletions
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11
src/Controllers/EnvironmentController.js
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@@ -23,10 +23,13 @@ class EnvironmentController extends CanvasController{
el.onwheel = function zoom(event) { el.onwheel = function zoom(event) {
event.preventDefault(); event.preventDefault();
var sign = -Math.sign(event.deltaY); var sign = Math.sign(event.deltaY);
// Restrict scale // Update the scale by multiplying it with the zoom speed raised to the power of the scroll direction (positive or negative)
scale = Math.min(50, this.scale+(sign*zoom_speed*this.scale)); scale *= Math.pow(zoom_speed, sign);
// Make sure the scale doesn't go below a minimum value or above a maximum value
scale = Math.min(64, Math.max(Math.pow(2, -10), scale));
var cur_top = parseInt($('#env-canvas').css('top')); var cur_top = parseInt($('#env-canvas').css('top'));
var cur_left = parseInt($('#env-canvas').css('left')); var cur_left = parseInt($('#env-canvas').css('left'));