78 lines
2.5 KiB
TypeScript
78 lines
2.5 KiB
TypeScript
const { ccclass, property } = cc._decorator;
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@ccclass
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export default class LocalDiffusionCtrl extends cc.Component {
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private _centerPointPos: cc.Vec2 = cc.v2(0.5, 0.5);
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private _centerColor: cc.Color = cc.Color.RED;
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private _radius: number = 0.2;
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onEnable() {
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this.node.on(cc.Node.EventType.TOUCH_START, this._onTouchStart, this);
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this.node.on(cc.Node.EventType.TOUCH_MOVE, this._onTouchMove, this);
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this.node.on("on_property_change", this._onPropertyChange, this);
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}
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onDisable() {
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this.node.off(cc.Node.EventType.TOUCH_START, this._onTouchStart, this);
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this.node.off(cc.Node.EventType.TOUCH_MOVE, this._onTouchMove, this);
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this.node.off("on_property_change", this._onPropertyChange, this);
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}
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private _onTouchStart(event: cc.Event.EventTouch) {
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this._onTouchMove(event);
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}
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private _onTouchMove(event: cc.Event.EventTouch) {
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let touchPointInWorldSpace = event.getLocation();
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let touchPointInNodeSpace = this.node.convertToNodeSpaceAR(touchPointInWorldSpace);
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// 将触摸点转换为OPENGL坐标系并归一化
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// OpenGl 坐标系原点在左上角
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this._centerPointPos = cc.v2(
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this.node.anchorX + touchPointInNodeSpace.x / this.node.width,
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1 - (this.node.anchorY + touchPointInNodeSpace.y / this.node.height)
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);
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this._updateMaterial({
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centerColor: this._centerColor,
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certerPoint: this._centerPointPos,
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radius: this._radius
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});
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}
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private _onPropertyChange(color: cc.Color, radius: number) {
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this._centerColor = color;
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this._radius = radius;
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this._updateMaterial({
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centerColor: this._centerColor,
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certerPoint: this._centerPointPos,
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radius: this._radius
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});
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}
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private _updateMaterial(param: {
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/**
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* 中心点颜色
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*/
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centerColor: cc.Color;
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/**
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* 中心点坐标 ([0.0, 1.0], [0.0, 1.0])
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*/
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certerPoint: cc.Vec2;
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/**
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* 扩散半径 [0.0, 1.0]
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*/
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radius: number;
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}) {
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this.getComponents(cc.RenderComponent).forEach(renderComponent => {
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let material: cc.Material = renderComponent.getMaterial(0);
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material.setProperty("centerColor", param.centerColor);
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material.setProperty("centerPoint", param.certerPoint);
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material.setProperty("radius", param.radius);
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renderComponent.setMaterial(0, material);
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});
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}
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}
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