清理代码 把minRo和maxRo做成参数.

src/GraphicsSystem/Viewer.ts

@@ -19,17 +19,17 @@ require("three-ShaderPass");
 
 require("three-OutlinePass");
 
-
-//
-const maxXRo = Math.PI * 0.5;
-const minXRo = -maxXRo;
 export class Viewer
 {
     m_effectFXAA: THREE.ShaderPass;
     m_OutlinePass: THREE.OutlinePass;
     m_Composer: THREE.EffectComposer;
+
+    m_MaxRo = Math.PI * 0.5;
+    m_MinRo = Math.PI * -0.5;
     m_zRo: number = Math.PI * 0.5;
-    m_xRo: number = maxXRo;
+    m_xRo: number = Math.PI * 0.5;
+
     m_ViewHeight: number = 205;
     //目标
     m_Target: THREE.Vector3 = new THREE.Vector3(0, 0, 0);
@@ -314,7 +314,7 @@ export class Viewer
         this.m_xRo += v.y * 0.003;
         this.m_zRo += v.x * 0.003;
 
-        this.m_xRo = this.m_xRo > maxXRo ? maxXRo : this.m_xRo < minXRo ? minXRo : this.m_xRo;
+        this.m_xRo = THREE.Math.clamp(this.m_xRo, this.m_MinRo, this.m_MaxRo);
         let roX = this.m_xRo - oldX;
 
         //缓存观察点