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Diffstat (limited to 'src/modules/Mouse.js')
-rw-r--r-- | src/modules/Mouse.js | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/modules/Mouse.js b/src/modules/Mouse.js new file mode 100644 index 0000000..0b8f922 --- /dev/null +++ b/src/modules/Mouse.js @@ -0,0 +1,53 @@ +class Mouse { + constructor(ct) { + this.ct = ct; + this.x = 0; + this.y = 0; + this.radius = 0.005; + this.show = false; + this.pressed = false; + this.onMove = null; + + window.addEventListener('mousemove', e => { + /* get current transform matrix */ + const matrix = this.ct.getTransform(); + matrix.invertSelf(); + + const x = e.offsetX; const y = e.offsetY; + this.x = matrix.a*x + matrix.b*y; + this.y = matrix.c*x + matrix.d*y; + + if (this.onMove) this.onMove(); + }); + + const root = document.getElementById('root'); + + root.addEventListener('mouseover', e => { + e = e ? e : window.event; + this.show = true; + }); + + root.addEventListener('mouseout', e => { + e = e ? e: window.event; + this.show = false; + }); + } + + render(ct) { + if (!this.show) return; + console.log(this.radius); + ct.save(); + + ct.strokeStyle = '#fff'; + + ct.beginPath(); + ct.arc(this.x, this.y, this.radius, 0, 2*Math.PI); + ct.closePath(); + ct.stroke(); + + ct.restore(); + } +} + + +export default Mouse; |