public void computeCameraPositions(SceneDatabase sceneDB)
{
float shortestDist = float.MaxValue;
float maxDist, minDist, curDist;
for (int i = 0; i < sceneDB.GetNumGeom(); i++)
{
RTGeometry g = sceneDB.GetGeom(i);
maxDist = (mEye - g.Max).Length();
minDist = (mEye - g.Min).Length();
if (maxDist < minDist)
{
curDist = maxDist;
}
else
{
curDist = minDist;
}
if (curDist < shortestDist)
{
shortestDist = curDist;
}
}// end for
float eyeSeparation = (shortestDist / 30f);// +0.25f;
leftCamera = mEye + mSideVec * eyeSeparation / 2f;
rightCamera = mEye - mSideVec * eyeSeparation / 2f;
}
internal void AddRTScene(RayTracer_552.RTCamera c, RayTracer_552.SceneDatabase rtScene)
{
UWB_Primitive prim;
NewSceneDatabase();
SceneResource <RTGeometry> allGeom = rtScene.GetAllGeom();
for (int i = 0; i < allGeom.Count; i++)
{
RTGeometry g = (RTGeometry)allGeom.ResourceLookup(i);
switch (g.GeomType())
{
case RTGeometry.RTGeometryType.Sphere:
RTSphere s = (RTSphere)g;
prim = CreateSphereMesh();
SetMeshMaterial(prim, rtScene.GetMaterial(s.GetMaterialIndex()));
float scale = s.Radius / 2f;
CreateNode(s.Center, scale, scale, scale, prim);
break;
case RTGeometry.RTGeometryType.Rectangle:
RTRectangle r = (RTRectangle)g;
prim = CreateRectangle(r);
SetMeshMaterial(prim, rtScene.GetMaterial(r.GetMaterialIndex()));
UWB_SceneNode node = CreateNode(r.GetCenter(), r.GetUSize() / 2f, 1f, r.GetVSize() / 2f, prim);
// now rotate the y-vector of node to point towards r.Normal;
float dot = (float)Math.Abs(Vector3.Dot(Vector3.UnitY, r.GetNormal()));
if (dot < 0.9999f)
{
float angle = (float)Math.Acos(dot);
Vector3 axis = Vector3.Cross(Vector3.UnitY, r.GetNormal());
axis.Normalize();
Quaternion q = Quaternion.CreateFromAxisAngle(axis, angle);
UWB_XFormInfo xf = node.getXFormInfo();
xf.SetRotationQuat(q);
node.setXFormInfo(xf);
}
break;
case RTGeometry.RTGeometryType.Triangle:
RTTriangle t = (RTTriangle)g;
Vector3[] v = t.GetVertices();
prim = new UWB_PrimitiveTriangle(v[0], v[1], v[2]);
prim.EnableLighting(true);
prim.EnableTexturing(false);
SetMeshMaterial(prim, rtScene.GetMaterial(t.GetMaterialIndex()));
CreateNode(Vector3.Zero, 1f, 1f, 1f, prim);
break;
}
}
AddCamera(c);
AddLights(rtScene);
// to show ray list
mShownRayX = mShownRayY = 0;
mRaysToShow = new UWB_PrimitiveList();
mDebugInfo = new UWB_SceneNode();
mDebugInfo.setPrimitive(mRaysToShow);
mDebugInfo.insertChildNode(mPixelsToShow.GetAllPixels());
mDebugInfo.insertChildNode(mPixelInWorld.GetAllPixels());
}