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74 lines
2.7 KiB
74 lines
2.7 KiB
import { Node, UITransform, Vec3 } from 'cc';
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/**
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* 技能表现缩放：预制体 UITransform = scale 1 时美术基准；
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* 基准世界半径 = 半宽 × 父链 worldScale；配表半径只参与比值，不写回预制体。
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*/
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/** 模板在预制体层级下短暂激活后采样的世界半径（半宽 × |worldScale|） */
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export function measureTemplateWorldRadius(template: Node | null): number | null {
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if (!template?.isValid) return null;
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const ut = template.getComponent(UITransform);
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const w = ut?.contentSize.width ?? 0;
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if (!(w > 0)) return null;
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const wasActive = template.active;
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template.active = true;
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const ws = Math.max(Math.abs(template.worldScale.x), Math.abs(template.worldScale.y), 1e-6);
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template.active = wasActive;
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return (w * 0.5) * ws;
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}
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/** 已挂到场景中的节点世界半径 */
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export function measureNodeWorldRadius(node: Node | null): number | null {
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if (!node?.isValid) return null;
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const ut = node.getComponent(UITransform);
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const w = ut?.contentSize.width ?? 0;
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if (!(w > 0)) return null;
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const ws = Math.max(Math.abs(node.worldScale.x), Math.abs(node.worldScale.y), 1e-6);
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return (w * 0.5) * ws;
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}
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/**
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* 克隆/实例挂到 host 后，按配表世界半径设置绝对 worldScale。
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* template 用于测量设计基准（含原父链缩放）。
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*/
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export function applyConfigWorldRadius(
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node: Node,
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template: Node,
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configRadiusPx: number,
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): boolean {
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const artWorldRadius = measureTemplateWorldRadius(template);
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if (artWorldRadius == null || !(artWorldRadius > 0) || !(configRadiusPx > 0)) return false;
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const ratio = configRadiusPx / artWorldRadius;
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const wasActive = template.active;
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template.active = true;
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const tplWs = template.worldScale;
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template.active = wasActive;
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const baseMag = Math.max(Math.abs(tplWs.x), Math.abs(tplWs.y), 1e-6);
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const targetMag = Math.max(0.2, baseMag * ratio);
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node.setScale(1, 1, 1);
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node.setWorldScale(
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tplWs.x >= 0 ? targetMag : -targetMag,
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tplWs.y >= 0 ? targetMag : -targetMag,
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1,
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);
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return true;
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}
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/**
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* 节点仍挂在模板原父级下时，用 localScale 达到配表世界半径（如音波留在 anim 下）。
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*/
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export function computeLocalScaleForConfigRadius(
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template: Node,
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initLocalScale: Readonly<Vec3>,
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configRadiusPx: number,
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): Vec3 | null {
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const artWorldRadius = measureTemplateWorldRadius(template);
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if (artWorldRadius == null || !(artWorldRadius > 0) || !(configRadiusPx > 0)) return null;
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const ratio = Math.max(0.2, configRadiusPx / artWorldRadius);
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return new Vec3(
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initLocalScale.x * ratio,
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initLocalScale.y * ratio,
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initLocalScale.z,
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);
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}
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