From 9626eafb2c87012267f21e1d3c9a8c60c07fd80b Mon Sep 17 00:00:00 2001
From: blobt <klm777x7@gmai.com>
Date: Tue, 11 May 2021 19:39:40 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=8C=E6=88=90camera?=
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---
 src/render/core/Camera.ts | 135 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 134 insertions(+), 1 deletion(-)

diff --git a/src/render/core/Camera.ts b/src/render/core/Camera.ts
index 9418c643..4975b490 100755
--- a/src/render/core/Camera.ts
+++ b/src/render/core/Camera.ts
@@ -305,6 +305,13 @@ export class Camera {
         return this._top;
     }
 
+    /**
+     * 获取视图矩阵
+     */
+    public get viewMatrix(): mat4 {
+        return this._viewMatrix;
+    }
+
     /**
      * 获取世界坐标逆矩阵
      */
@@ -312,12 +319,50 @@ export class Camera {
         return this._invViewMatrix;
     }
 
+    /**
+     * 获取投影矩阵
+     */
+    public get projectionMatrix(): mat4 {
+        return this._projectionMatrix;
+    }
+
+    /**
+     * 获得视图投影矩阵
+     */
+    public get viewProjecttionMatrix(): mat4 {
+        return this._viewProjMatrix;
+    }
+
+    /**
+     * 获得视图投影矩阵逆矩阵
+     */
+    public get invViewProjecttionMatrix(): mat4 {
+        return this._invViewProjMatrix;
+    }
+
+    /**
+     * 获取视锥体
+     */
+    public get frustum(): Frustum {
+        return this._frustum;
+    }
+
     /**
      * 更新相机状态
      * @param intervaleSec 更新间隔
      */
     public update(intervaleSec: number): void {
+        //生成投影矩阵
         this._projectionMatrix = mat4.perspective(this.fovY, this.aspectRatio, this.near, this.far);
+
+        //生成透视矩阵
+        this._calcViewMatrix();
+
+        //????
+        mat4.product(this._projectionMatrix, this._viewMatrix, this._viewProjMatrix);
+
+        this._viewProjMatrix.copy(this._invViewMatrix);
+        this._viewProjMatrix.inverse(this._invViewMatrix);
     }
 
     /**
@@ -362,6 +407,94 @@ export class Camera {
         //生成view的逆矩阵，其实就是世界矩阵
         this._viewMatrix.inverse(this._invViewMatrix);
 
-        //TODO this._frustum.buildFromCamera(this);
+        this._frustum.buildFromCamera(this);
     }
+
+    /**
+     * 局部坐标系下的前后移动
+     * @param speed 
+     */
+    public moveForward(speed: number): void {
+        if (this._type === ECameraType.FPSCAMERA) {
+            this._position.x = this._zAxis.x * speed;
+            this._position.z = this._zAxis.z * speed;
+        } else {
+            this._position.x += this._zAxis.x * speed;
+            this._position.y += this._zAxis.y * speed;
+            this._position.z += this._zAxis.z * speed;
+        }
+    }
+
+    /**
+     * 局部坐标系下的左右移动
+     * @param speed 
+     */
+    public moveRightward(speed: number): void {
+        if (this._type === ECameraType.FPSCAMERA) {
+            this._position.x += this._xAxis.x * speed;
+            this._position.z += this._xAxis.z * speed;
+        } else {
+            this._position.x += this._xAxis.x * speed;
+            this._position.y += this._xAxis.y * speed;
+            this._position.z += this._xAxis.z * speed;
+        }
+    }
+
+    /**
+     * 局部坐标系下上下移动
+     * @param speed 
+     */
+    public moveUpward(speed: number): void {
+        if (this._type === ECameraType.FPSCAMERA) {
+            this._position.y += speed;
+        } else {
+            this._position.x += this._yAxis.x * speed;
+            this._position.y += this._yAxis.y * speed;
+            this._position.z += this._yAxis.z * speed;
+        }
+    }
+
+    /**
+     * 局部坐标系下的左右旋转
+     * @param angle 
+     */
+    public yaw(angle: number): void {
+        mat4.m0.setIdentity();
+        angle = Util.toRadian(angle);
+        if (this._type === ECameraType.FPSCAMERA) {
+            mat4.m0.rotate(angle, vec3.up);
+        } else {
+            mat4.m0.rotate(angle, this._yAxis);
+        }
+        mat4.m0.multiplyVec3(this.zAxis, this._zAxis);
+        mat4.m0.multiplyVec3(this.xAxis, this._xAxis);
+    }
+
+
+    /**
+     * 局部坐标系下的上下旋转
+     * @param angle 
+     */
+    public pitch(angle: number): void {
+        mat4.m0.setIdentity();
+        angle = Util.toRadian(angle);
+        mat4.m0.rotate(angle, this._xAxis);
+        mat4.m0.multiplyVec3(this.yAxis, this._yAxis);
+        mat4.m0.multiplyVec3(this.zAxis, this._zAxis);
+    }
+
+    /**
+     * 局部坐标系下的坐标轴旋转
+     * @param angle 
+     */
+    public roll(angle: number): void {
+        if (this._type === ECameraType.FLYCAMERA) {
+            mat4.m0.setIdentity();
+            angle = Util.toRadian(angle);
+            mat4.m0.rotate(angle, this._zAxis);
+            mat4.m0.multiplyVec3(this.xAxis, this._xAxis);
+            mat4.m0.multiplyVec3(this.yAxis, this._yAxis);
+        }
+    }
+
 }
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