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31 lines
1.0 KiB
TypeScript
31 lines
1.0 KiB
TypeScript
/*
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* @Author: dgflash
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* @Date: 2022-07-26 15:29:57
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* @LastEditors: dgflash
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* @LastEditTime: 2022-09-02 14:50:16
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*/
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import { Camera, Vec3, view } from "cc";
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/** 摄像机工具 */
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export class CameraUtil {
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/**
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* 当前世界坐标是否在摄像机显示范围内
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* @param camera 摄像机
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* @param worldPos 坐标
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*/
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static isInView(camera: Camera, worldPos: Vec3) {
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const cameraPos = camera.node.getWorldPosition();
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const viewPos = camera.worldToScreen(worldPos);
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const dir = Vec3.normalize(new Vec3(), worldPos.subtract(cameraPos));
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const forward = camera.node.forward;
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const dot = Vec3.dot(forward, dir);
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const viewportRect = view.getViewportRect();
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// 判断物体是否在相机前面
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return dot > 0
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// 判断物体是否在视窗内
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&& (viewPos.x <= viewportRect.width) && (viewPos.x >= 0)
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&& (viewPos.y <= viewportRect.height) && (viewPos.y >= 0);
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}
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} |