add Frustum culling to new Sprite

build/cocos2d_libs.xcodeproj/project.pbxproj.REMOVED.git-id

@@ -1 +1 @@
-89e13afae7209dd4e3bc13d195b83c0be4cf85ae
+897a831f2ce0489f68be53deb82150c0c7d86ad9

cocos/2d/CCDirector.cpp

@@ -62,7 +62,7 @@ THE SOFTWARE.
 #include "CCEventDispatcher.h"
 #include "CCFontFreeType.h"
 #include "Renderer.h"
-
+#include "renderer/Frustum.h"
 /**
  Position of the FPS
  
@@ -136,7 +136,9 @@ bool Director::init(void)
     _winSizeInPoints = Size::ZERO;    
 
     _openGLView = nullptr;
-
+    
+    _cullingFrustum = new Frustum();
+    
     _contentScaleFactor = 1.0f;
 
     // scheduler
@@ -260,7 +262,17 @@ void Director::drawScene()
     }
 
     kmGLPushMatrix();
-
+    
+    //construct the frustum
+    {
+        kmMat4 view;
+        kmMat4 projection;
+        kmGLGetMatrix(KM_GL_PROJECTION, &projection);
+        kmGLGetMatrix(KM_GL_MODELVIEW, &view);
+        
+        _cullingFrustum->setupFromMatrix(view, projection);
+    }
+    
     // draw the scene
     if (_runningScene)
     {
@@ -713,6 +725,7 @@ void Director::purgeDirector()
     CC_SAFE_RELEASE_NULL(_FPSLabel);
     CC_SAFE_RELEASE_NULL(_SPFLabel);
     CC_SAFE_RELEASE_NULL(_drawsLabel);
+    CC_SAFE_DELETE(_cullingFrustum);
 
     // purge bitmap cache
     LabelBMFont::purgeCachedData();

cocos/2d/CCDirector.h

@@ -55,6 +55,7 @@ class Scheduler;
 class ActionManager;
 class EventDispatcher;
 class TextureCache;
+class Frustum;
 
 /**
 @brief Class that creates and handles the main Window and manages how
@@ -330,6 +331,12 @@ public:
     */
     void setContentScaleFactor(float scaleFactor);
     float getContentScaleFactor() const;
+    
+    /**
+     Get the Culling Frustum
+     */
+    
+    Frustum* getFrustum() const { return _cullingFrustum; }
 
 public:
     /** Gets the Scheduler associated with this director
@@ -434,6 +441,8 @@ protected:
     unsigned int _totalFrames;
     unsigned int _frames;
     float _secondsPerFrame;
+    
+    Frustum* _cullingFrustum;
      
     /* The running scene */
     Scene *_runningScene;

cocos/2d/CCNewSprite.cpp

@@ -11,6 +11,8 @@
 #include "Renderer.h"
 #include "QuadCommand.h"
 #include "CCMenuItem.h"
+#include "Frustum.h"
+#include "CCDirector.h"
 
 NS_CC_BEGIN
 
@@ -132,10 +134,46 @@ void NewSprite::updateQuadVertices()
 void NewSprite::draw(void)
 {
     updateQuadVertices();
+    if(false == culling())
+    {
+        static int count =0;
+        CCLOG("culling Sprite New to not visible %d ",++count);
+        return;
+    }
+
     //TODO implement z order
     QuadCommand* renderCommand = new QuadCommand(0, _vertexZ, _texture->getName(), _shaderProgram, _blendFunc, &_quad, 1);
 
     Renderer::getInstance()->addCommand(renderCommand);
 }
 
+bool NewSprite::culling() const
+{
+    Frustum* frustum = Director::getInstance()->getFrustum();
+    AffineTransform worldTM = getNodeToWorldTransform();
+    //generate aabb
+    Point lowLeft(0,0);
+    Point topRight = lowLeft + Point(getContentSize());
+    Point lowRight(topRight.x,0);
+    Point topLeft(0, topRight.y);
+    
+    lowLeft = PointApplyAffineTransform(lowLeft,worldTM);
+    lowRight = PointApplyAffineTransform(lowRight,worldTM);
+    topRight = PointApplyAffineTransform(topRight,worldTM);
+    topLeft = PointApplyAffineTransform(topLeft,worldTM);
+    
+    kmVec3 point = {lowLeft.x, lowLeft.y, _vertexZ};
+    
+    AABB aabb(point,point);
+    point = {lowRight.x, lowRight.y, _vertexZ};
+    aabb.expand(point);
+    point = {topLeft.x, topLeft.y, _vertexZ};
+    aabb.expand(point);
+    point = {topRight.x, topRight.y, _vertexZ};
+    aabb.expand(point);
+    
+    return Frustum::IntersectResult::OUTSIDE !=frustum->intersectAABB(aabb);
+}
+
+
 NS_CC_END

cocos/2d/CCNewSprite.h

@@ -25,10 +25,12 @@ public:
     ~NewSprite();
 
     virtual bool initWithTexture(Texture2D *texture, const Rect& rect, bool rotated);
-
+    
     virtual void updateQuadVertices();
     virtual void draw(void) override;
     
+    bool culling() const;
+    
 protected:
 };