Changeset 2762 for GTP/trunk/App/Demos/Vis/CHC_revisited/Camera.cpp

Timestamp:

06/15/08 23:35:07 (16 years ago)

Author:

mattausch

Message:

debug version

File:

• GTP/trunk/App/Demos/Vis/CHC_revisited/Camera.cpp (modified) (5 diffs)

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

@@ -65 +65 @@
 void Camera::LookAtBox(const AxisAlignedBox3 &box)
 {
-        mDirection = box.Min() - box.Max();
-        mPosition = box.Max() - mDirection;
+        mDirection = Vector3(0, 0, box.Min().z - box.Max().z);
+        mPosition = Vector3(0);//box.Max() - mDirection;
 
         Precompute();
@@ -92 +92 @@
         GetProjectionMatrix(matProjectionView);
 
-        matProjectionView *= matViewing;
-
-        float fInvLength;
+        matProjectionView = matViewing * matProjectionView;
+        //matProjectionView = matProjectionView * matViewing;
+        
         float planes[6][4];
+
 
         //////////
@@ -118 +119 @@
                 // the clipping planes look outward the frustum,
                 // so distances > 0 mean that a point is outside
-                fInvLength      = -1.0f / sqrt(planes[i][0] * planes[i][0] +    
-                                                                   planes[i][1] * planes[i][1] +        
-                                                                   planes[i][2] * planes[i][2]);
+                float fInvLength = -1.0f / 
+                        sqrt(planes[i][0] * planes[i][0] +      
+                             planes[i][1] * planes[i][1] +      
+                                 planes[i][2] * planes[i][2]);
 
                 planes[i][0] *= fInvLength;
@@ -127 +129 @@
                 planes[i][3] *= fInvLength;
 
-                Vector3 normal(planes[i][0], planes[i][1], planes[i][2]);
-                frustum.mClipPlanes[i] = Plane3(normal, planes[i][3]);
+                frustum.mClipPlanes[i].mNormal = Vector3(planes[i][0], planes[i][1], planes[i][2]);
+                frustum.mClipPlanes[i].mD = planes[i][3];
         }
 }
@@ -156 +158 @@
 
 
-}
-
+
+void Camera::ComputePoints(Vector3 &ftl, Vector3 &ftr, Vector3 &fbl, Vector3 &fbr,
+                                                   Vector3 &ntl, Vector3 &ntr, Vector3 &nbl, Vector3 &nbr)
+{
+        float z_near = 0.1f;
+        float z_far = 300;
+
+        const float h_near = 2.0f * tan(mFovy / 2) * z_near;
+        const float w_near = h_near * GetAspect();
+        const float h_far = 2.0f * tan(mFovy / 2) * z_far;
+        const float w_far = h_far * GetAspect();
+
+        const Vector3 view = mDirection;
+        const Vector3 fc = mPosition + view * z_far; 
+        
+        const Vector3 up = mUp;
+
+        const Vector3 right = mRight;
+
+        Vector3 t1, t2;
+
+        t1 = h_far * 0.5f * up;
+        t2 = w_far * 0.5f * right;
+
+        ftl = fc + t1 - t2;
+        ftr = fc + t1 + t2;
+        fbl = fc - t1 - t2;
+        fbr = fc - t1 + t2;
+
+        const Vector3 nc = mPosition + mDirection * z_near;
+        
+        t1 = h_near * 0.5f * up;
+        t2 = w_near * 0.5f * right;
+
+        ntl = nc + t1 - t2;
+        ntr = nc + t1 + t2;
+        nbl = nc - t1 - t2;
+        nbr = nc - t1 + t2;
+}
+
+
+}
+