Changeset 2780 for GTP/trunk/App/Demos/Vis/CHC_revisited

Timestamp:

06/19/08 18:43:17 (17 years ago)

Author:

mattausch

Message:

 

Location:

GTP/trunk/App/Demos/Vis/CHC_revisited

Files:

• Camera.cpp (modified) (10 diffs)
• Camera.h (modified) (4 diffs)
• SceneQuery.cpp (modified) (3 diffs)
• chcdemo.cpp (modified) (11 diffs)

GTP/trunk/App/Demos/Vis/CHC_revisited/Camera.cpp

@@ -7 +7 @@
 {
 
-using namespace std;
-
 
 Camera::Camera() 
@@ -15 +13 @@
         mHeight = 100;
         mFovy = 90.0f * M_PI / 180.0f;
-        mIsOrtho = false;
-        
-        SetPosition(Vector3(0, 0, 0));
-
-        mPitch = mYaw = 0;
-        Precompute();
 }
 
@@ -30 +22 @@
         
         mFovy = fieldOfView * M_PI / 180.0f;
-
-        mIsOrtho = false;
-
-        SetPosition(Vector3(0, 0, 0));
-
-        SetPosition(Vector3(0, 0, 0));
-
-        mPitch = mYaw = 0;
-        Precompute();
 }
 
@@ -44 +27 @@
 void Camera::Precompute() 
 {
-        Vector3 direction = Vector3(0, 1, 0);
-
-        Vector3 side = CrossProd(Vector3(1, 0, 0), direction);
-        
-        Vector3 up = -Normalize(CrossProd(side, direction));
-        Vector3 right = -Normalize(CrossProd(direction, up));
-
-        mBaseOrientation = Matrix4x4(right, up, direction);
-        mViewOrientation = mBaseOrientation;
-        cout<<"view: " << direction << " right: " << right << " up " << up << endl;
-}
-
+        mDirection.Normalize();
+
+        //Vector3 side = CrossProd(Vector3(0, 1, 0), mDirection);
+        Vector3 side = CrossProd(Vector3(0, 0, 1), mDirection);
+        
+        mUp = -Normalize(CrossProd(side, mDirection));
+        mRight = -Normalize(CrossProd(mDirection, mUp));
+
+
+        float k = tan(mFovy/2);
+        mUp *= k;
+        mRight *= k*mWidth/mHeight;
+}
 
 
@@ -61 +45 @@
 {
         mPosition = pos;
+        Precompute();
+}
+
+
+void Camera::SetDirection(const Vector3 &dir) 
+{
+        mDirection = dir;
+        Precompute();
 }
 
@@ -67 +59 @@
 {
         mNear = nearDist;
+}
+
+
+void Camera::LookInBox(const AxisAlignedBox3 &box)
+{
+        //mDirection = Vector3(0, 0, 1);
+        mDirection = Vector3(0, 1, 0);
+        mPosition = box.Center();
+        mPosition.z = box.Min(2) + 0.9f * box.Size(2);
+
+        Precompute();
+}
+
+
+void Camera::LookAtBox(const AxisAlignedBox3 &box)
+{
+        mDirection = Vector3(0, box.Min().y - box.Max().y, 0);
+        mPosition = Vector3(0);//box.Max() - mDirection;
+
+        Precompute();
 }
 
@@ -147 +159 @@
 void Camera::SetupCameraView()
 {
-        Matrix4x4 viewOrientation = mViewOrientation;
-        Vector3 pos = -mPosition;
-        pos = mViewOrientation * pos;
-
-        viewOrientation.x[3][0] = pos.x;
-        viewOrientation.x[3][1] = pos.y;
-        viewOrientation.x[3][2] = pos.z;
-
         glLoadIdentity();
-        glMultMatrixf((float *)viewOrientation.x);
+        gluLookAt(mPosition.x, mPosition.y, mPosition.z,
+                  mPosition.x + mDirection.x, mPosition.y + mDirection.y, mPosition.z + mDirection.z, 
+                          mUp.x, mUp.y, mUp.z);
+
+        //std::cout << "dir: " << mDirection << " pos: " << mPosition << " up: " << mUp << std::endl;
 }
 
@@ -172 +180 @@
         const float w_far = h_far * GetAspect();
 
-        const Vector3 view = GetDirection();
+        const Vector3 view = mDirection;
         const Vector3 fc = mPosition + view * z_far; 
         
-        const Vector3 up = GetUpVector();
-
-        const Vector3 right = GetRightVector();
+        const Vector3 up = mUp;
+
+        const Vector3 right = mRight;
 
         Vector3 t1, t2;
@@ -189 +197 @@
         fbr = fc - t1 + t2;
 
-        const Vector3 nc = mPosition + view * z_near;
+        const Vector3 nc = mPosition + mDirection * z_near;
         
         t1 = h_near * 0.5f * up;
@@ -201 +209 @@
 
 
-void Camera::SetOrtho(bool ortho)
-{
-        mIsOrtho = true;
-}
-
-
-void Camera::Yaw(float angle)
-{
-        mYaw += angle;
-        CalculateFromPitchAndYaw();
-        /*
-        Matrix4x4 viewOrientation(mRight, mUp, mDirection);
-        Matrix4x4 rot = RotationYMatrix(angle);
-
-        viewOrientation = viewOrientation * rot;
-
-        mDirection = Vector3(viewOrientation.x[2][0], viewOrientation.x[2][1], viewOrientation.x[2][2]);
-        mRight =     Vector3(viewOrientation.x[0][0], viewOrientation.x[0][1], viewOrientation.x[0][2]);
-        mUp =        Vector3(viewOrientation.x[1][0], viewOrientation.x[1][1], viewOrientation.x[1][2]);*/
-}
-
-
-void Camera::Pitch(float angle)
-{
-        mPitch += angle;
-        CalculateFromPitchAndYaw();
-}
-
-
-void Camera::CalculateFromPitchAndYaw()
-{
-        mViewOrientation = mBaseOrientation;
-
-        Matrix4x4 roty = RotationYMatrix(mPitch);
-        Matrix4x4 rotx = RotationXMatrix(mYaw);
-
-        mViewOrientation *= roty;
-        mViewOrientation *= rotx;
-}
-
-
-Vector3 Camera::GetDirection() const
-{ 
-        return Vector3(mViewOrientation.x[0][2], mViewOrientation.x[1][2], mViewOrientation.x[2][2]);
-}
-
-
-Vector3 Camera::GetUpVector() const 
-{ 
-        return Vector3(mViewOrientation.x[0][1], mViewOrientation.x[1][1], mViewOrientation.x[2][1]);
-}
-
-
-Vector3 Camera::GetRightVector() const 
-{ 
-        return Vector3(mViewOrientation.x[0][0], mViewOrientation.x[1][0], mViewOrientation.x[2][0]);
-                
-}
-
-
-}
-
+}
+

GTP/trunk/App/Demos/Vis/CHC_revisited/Camera.h

@@ -20 +20 @@
         {
                 /// the 6 clip planes
+                //float mClipPlane[6][4];
                 Plane3 mClipPlanes[6];
 
@@ -29 +30 @@
         Camera(int width, int height, float fieldOfView = 90.f);
 
+        void Precompute();
+
+        void LookInBox(const AxisAlignedBox3 &box);
+
+        void LookAtBox(const AxisAlignedBox3 &box);
 
         void SetPosition(const Vector3 &pos);
 
+        void SetDirection(const Vector3 &dir);
+
         inline Vector3 GetPosition() const { return mPosition; }
-        Vector3 GetDirection() const;
-        Vector3 GetUpVector() const;
-        Vector3 GetRightVector() const;
+        inline Vector3 GetDirection() const { return mDirection; }
+        inline Vector3 GetUpVector() const { return mUp; }
+        inline Vector3 GetRightVector() const { return mRight; }
 
         inline float GetFov() const { return mFovy; }
@@ -52 +60 @@
         inline float GetNear() const { return mNear; }
         void SetNear(float nearDist);
-        
-        inline float GetFar() const { return mFar; }
-
-        void SetFar(float farDist) { mFar = farDist; }
-
-        void SetOrtho(bool ortho);
-
-        void Yaw(float angle);
-        void Pitch(float angle);
-        /** Sets up viewing in gl
-        */
-        void Render();
 
 
 protected:
 
-        void Precompute();
-
-        void CalculateFromPitchAndYaw();
-
         ////////////////
 
+        Vector3 mPosition;
+        Vector3 mDirection;
+
+        /// up vector takes into account the FOV at a unit distance from the origin
+        Vector3 mUp;
+        /// right vector takes into account the FOV at a unit distance from the origin
+        Vector3 mRight;
 
         float mFovy;
@@ -80 +79 @@
 
         float mNear;
-
-        float mFar;
-
-        bool mIsOrtho;
-
-        Matrix4x4 mBaseOrientation;
-        Matrix4x4 mViewOrientation;
-
-        float mPitch;
-        float mYaw;
-
-        Vector3 mPosition;
 };
 

GTP/trunk/App/Demos/Vis/CHC_revisited/SceneQuery.cpp

@@ -63 +63 @@
 
         Camera *orthoCam = new Camera(len.x, len.y);
-        orthoCam->SetOrtho(true);
+        //orthoCam->SetOrtho(true);
 
         orthoCam->SetNear(0.0f);
-        orthoCam->SetFar(len.z);
+        //orthoCam->SetFar(len.z);
 
         orthoCam->SetPosition(pos);
@@ -72 +72 @@
         cout << "fov: " << orthoCam->GetFov() << endl;
         cout << "near: " << orthoCam->GetNear() << endl;
-        cout << "far: " << orthoCam->GetFar() << endl;
+        //cout << "far: " << orthoCam->GetFar() << endl;
         cout << "aspect: " << orthoCam->GetAspect() << endl;
 
@@ -80 +80 @@
 
         //orthoCam->SetDirection(Vector3(0, 1, 0));
-        orthoCam->Yaw(M_PI * 0.5f);
+        //orthoCam->Yaw(M_PI * 0.5f);
         
         renderer->SetCamera(orthoCam);

GTP/trunk/App/Demos/Vis/CHC_revisited/chcdemo.cpp

@@ -163 +163 @@
         //camera->LookInBox(bvh->GetBox());
 
-        //camera->SetDirection(Vector3(0.961829f, 0.273652f, 0.0f));
-        //camera->SetDirection(Vector3(0.0f, 1.0f, 0.0f));
+        camera->SetDirection(Vector3(0.961829f, 0.273652f, 0.0f));
         camera->SetPosition(Vector3(483.398f, 242.364f, 186.078f));
 
@@ -295 +294 @@
                 break;
         case RenderTraverser::CHC:
-                cout << "using chc" << endl;
                 traverser = new CHCTraverser();
                 break;
@@ -490 +488 @@
         case 'A':
                 {
-                        camera->Pitch(keyRotation);
+                        Vector3 viewDir = camera->GetDirection();
+                        // rotate view vector
+                        Matrix4x4 rot = RotationZMatrix(keyRotation);
+                        viewDir = rot * viewDir;
+                        camera->SetDirection(viewDir);
                 }
                 break;
@@ -496 +498 @@
         case 'D':
         {
-                        camera->Pitch(-keyRotation);
+                        Vector3 viewDir = camera->GetDirection();
+                        // rotate view vector
+                        Matrix4x4 rot = RotationZMatrix(-keyRotation);
+                        viewDir = rot * viewDir;
+                        camera->SetDirection(viewDir);
                 }
                 break;
         case 'w':
         case 'W':
+                {
+                        Vector3 pos = camera->GetPosition();
+                        pos += hvec * keyForwardMotion;
+                        camera->SetPosition(pos);
+                }
+                break;
+        case 'x':
+        case 'X':
                 {
                         Vector3 pos = camera->GetPosition();
@@ -507 +521 @@
                 }
                 break;
-        case 'x':
-        case 'X':
-                {
-                        Vector3 pos = camera->GetPosition();
-                        pos += hvec * keyForwardMotion;
-                        camera->SetPosition(pos);
-                }
-                break;
         case 'r':
         case 'R':
@@ -541 +547 @@
         case GLUT_KEY_LEFT:
                 {
-                        camera->Pitch(keyRotation);
+                        Vector3 viewDir = camera->GetDirection();
+                        // rotate view vector
+                        Matrix4x4 rot = RotationZMatrix(keyRotation);
+                        viewDir = rot * viewDir;
+                        camera->SetDirection(viewDir);
                 }
                 break;
         case GLUT_KEY_RIGHT:
                 {
-                        camera->Pitch(-keyRotation);
+                        Vector3 viewDir = camera->GetDirection();
+                        // rotate view vector
+                        Matrix4x4 rot = RotationZMatrix(-keyRotation);
+                        viewDir = rot * viewDir;
+                        camera->SetDirection(viewDir);
                 }
                 break;
         case GLUT_KEY_UP:
+                {
+                        Vector3 pos = camera->GetPosition();
+                        pos += hvec * 0.6f;
+                        camera->SetPosition(pos);
+                }
+                break;
+        case GLUT_KEY_DOWN:
                 {
                         Vector3 pos = camera->GetPosition();
                         pos -= hvec * 0.6f;
-                        camera->SetPosition(pos);
-                }
-                break;
-        case GLUT_KEY_DOWN:
-                {
-                        Vector3 pos = camera->GetPosition();
-                        pos += hvec * 0.6f;
                         camera->SetPosition(pos);
                 }
@@ -627 +641 @@
 void leftMotion(int x, int y) 
 {
+        static float eyeXAngle = 0.0f;
+
         Vector3 viewDir = camera->GetDirection();
         Vector3 pos = camera->GetPosition();
@@ -633 +649 @@
         Vector3 horView(viewDir[0], viewDir[1], 0);
         
-        float eyeXAngle = 0.2f *  M_PI * (xEyeBegin - x) / 180.0;
-
-        camera->Pitch(eyeXAngle);
-
-        pos -= horView * (yMotionBegin - y) * 0.2f;
-        
+        eyeXAngle = 0.2f *  M_PI * (xEyeBegin - x) / 180.0;
+
+        // rotate view vector
+        Matrix4x4 rot = RotationZMatrix(eyeXAngle);
+        viewDir = rot * viewDir;
+
+        pos += horView * (yMotionBegin - y) * 0.2f;
+
+        camera->SetDirection(viewDir);
         camera->SetPosition(pos);
         
@@ -653 +672 @@
 void rightMotion(int x, int y) 
 {
-        float eyeYAngle = -0.2f *  M_PI * (yEyeBegin - y) / 180.0;
-
-        camera->Yaw(eyeYAngle);
-        
+        static float eyeYAngle = 0.0f;
+
+        Vector3 viewDir = camera->GetDirection();
+        Vector3 right = camera->GetRightVector();
+
+        eyeYAngle = -0.2f *  M_PI * (yEyeBegin - y) / 180.0;
+
+        // rotate view vector
+        Matrix4x4 rot = RotationAxisMatrix(right, eyeYAngle);
+        viewDir = rot * viewDir;
+
+        camera->SetDirection(viewDir);
+                
         yEyeBegin = y;
         
@@ -678 +706 @@
         rVec = rot * rVec;
         
-        pos += rVec * (x - horizontalMotionBegin) * 0.1f;
+        pos -= rVec * (x - horizontalMotionBegin) * 0.1f;
         //pos[1] += (verticalMotionBegin - y) * 0.1f;
         pos[2] += (verticalMotionBegin - y) * 0.1f;
@@ -771 +799 @@
         ////////////
         // --- visualization of the occlusion culling
-
         visualization->Render();