internal void AddDebugPixel(RayTracer_552.RTCore rtCore)
{
if (null == rtCore)
return;
mPixelsToShow.AddDebugPixel(rtCore, mCameraPosition);
}
internal void AddRTKdTree(RayTracer_552.KdTreeNode rootNode)
{
UWB_SceneNode n = new UWB_SceneNode();
m_SceneDatabase.insertChildNode(n);
UWB_PrimitiveList list = new UWB_PrimitiveList();
n.setPrimitive(list);
AddBox(rootNode, list);
}
internal void AddBox(RayTracer_552.KdTreeNode node, UWB_PrimitiveList list)
{
defineBox(list, node.Bounds.Min, node.Bounds.Max);
if (!node.IsLeafNode()) {
AddBox(node.LeftChild, list);
AddBox(node.RightChild, list);
}
}
internal void AddDebugRays(RayTracer_552.RTCore rtCore)
{
if (null == rtCore)
return;
while ((mShownRayY < rtCore.CurrentY) ||
(((mShownRayY == rtCore.CurrentY) && (mShownRayX < rtCore.CurrentX))))
{
lock (rtCore)
{
Vector3 p = new Vector3();
System.Drawing.Color c = new System.Drawing.Color();
float dist;
rtCore.GetPixelValues(mShownRayX, mShownRayY, out p, out c, out dist);
if (rtCore.DisplayDebugRays())
{
UWB_PrimitiveLine line = new UWB_PrimitiveLine();
Vector3 v = p - mCameraPosition;
float len = v.Length();
v /= len;
if (dist > (float.MaxValue / 2f))
dist = len;
p = mCameraPosition + dist * v;
line.setStartPoint(mCameraPosition.X, mCameraPosition.Y, mCameraPosition.Z);
line.setEndPoint(p.X, p.Y, p.Z);
line.Material.Diffuse = Vector4.Zero;
line.Material.Specular = Vector4.Zero;
line.Material.Ambient = Vector4.Zero;
line.Material.Emissive = Vector4.One;
mRaysToShow.append(line);
}
mShownRayX++;
if (mShownRayX >= rtCore.ImageWidth)
{
mShownRayX = 0;
mShownRayY++;
}
}
}
}
private void SetMeshMaterial(UWB_Primitive prim, RayTracer_552.RTMaterial mat)
{
prim.EnableLighting(true);
prim.setShadeMode(eShadeMode.smGouraud);
prim.Material.Emissive = new Vector4(Vector3.Zero, 1f);
prim.Material.Ambient = new Vector4(mat.GetAmbientColor, 1f);
prim.Material.Diffuse = new Vector4(mat.GetDiffuseColor, 1f);
prim.Material.Specular = new Vector4(mat.GetSpecularColor, 1f);
prim.Material.Power = mat.GetN;
}
private void AddLights(RayTracer_552.SceneDatabase rtScene)
{
UWB_XNAGraphicsDevice.m_TheAPI.LightManager.ResetAllLights();
for (int l = 0; l < rtScene.GetNumLights(); l++)
{
RTLight lgt = rtScene.GetLight(l);
Vector4 useColor = new Vector4(lgt.GetColor(new Vector3(0,0,0)),1f);
UWB_XNALight theLight = null;
if (lgt.GetLightSourceType() == RTLightType.RTLightSourceType.RTLightSourceTypeDirection)
{
theLight = UWB_XNAGraphicsDevice.m_TheAPI.LightManager.CreateDirectionalLight();
}
else if (lgt.GetLightSourceType() == RTLightType.RTLightSourceType.RTLightSourceTypeSpot)
{
theLight = UWB_XNAGraphicsDevice.m_TheAPI.LightManager.CreateSpotLight();
}
else
{
theLight = UWB_XNAGraphicsDevice.m_TheAPI.LightManager.CreatePointLight();
}
theLight.Ambient = Vector4.Zero;
theLight.Diffuse = useColor;
theLight.Specular = useColor;
theLight.Position = lgt.GetLightPosition();
theLight.Direction = -lgt.GetNormalizedDirection(Vector3.Zero);
theLight.Color = useColor;
theLight.Attenuation = new Vector3(1f, 0.0f, 0.0f);
theLight.Range = 10000f;
theLight.SwitchOnLight();
UWB_Primitive prim = CreateSphereMesh();
SetMeshMaterial(prim, rtScene.GetMaterial(0));
float scale = 0.25f;
CreateNode(lgt.GetLightPosition(), scale, scale, scale, prim);
}
}
private void AddCamera(RayTracer_552.RTCamera c)
{
// Look at position
UWB_SceneNode atN = new UWB_SceneNode();
UWB_XNAPrimitiveMesh at = new UWB_XNAPrimitiveMesh("sphere");
at.Material.Diffuse = new Vector4(0.8f, 0.1f, 0.1f, 1.0f);
atN.setPrimitive(at);
UWB_XFormInfo atxf = atN.getXFormInfo();
atxf.SetTranslation(c.AtPosition);
atxf.SetScale(new Vector3(0.3f, 0.3f, 0.3f));
atN.setXFormInfo(atxf);
// Eye position
UWB_SceneNode eyeN = new UWB_SceneNode();
UWB_XNAPrimitiveMesh eye = new UWB_XNAPrimitiveMesh("cone");
eyeN.setPrimitive(eye);
UWB_XFormInfo eyexf = eyeN.getXFormInfo();
eyexf.SetTranslation(c.EyePosition);
mCameraPosition = c.EyePosition;
Vector3 init = new Vector3(0, 0, 1); // initial cone orientation
Vector3 final = c.AtPosition - c.EyePosition;
final = Vector3.Normalize(final);
float dot = Vector3.Dot(init, final);
if (Math.Abs(dot) < 0.9999)
{
float angle = (float)Math.Acos(dot);
Vector3 axis = Vector3.Cross(init, final);
axis = Vector3.Normalize(axis);
Quaternion q = Quaternion.CreateFromAxisAngle(axis, angle);
eyexf.SetRotationQuat(q);
}
eyeN.setXFormInfo(eyexf);
// Lines ...
UWB_SceneNode lineN = new UWB_SceneNode();
mCameraPrimitives = new UWB_PrimitiveList();
lineN.setPrimitive(mCameraPrimitives);
UWB_PrimitiveLine l = new UWB_PrimitiveLine();
l.setStartPoint(c.EyePosition.X, c.EyePosition.Y, c.EyePosition.Z);
l.setEndPoint(c.AtPosition.X, c.AtPosition.Y, c.AtPosition.Z);
mCameraPrimitives.append(l);
mCamera.insertChildNode(lineN);
mCamera.insertChildNode(atN);
mCamera.insertChildNode(eyeN);
}
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());
}
internal void AddImageFrame(RayTracer_552.RTCore rtCore)
{
if (null == rtCore)
return;
// construct the image frame
Vector3 tl = rtCore.GetTopLeftPixelPosition();
Vector3 tr = rtCore.GetTopRightPixelPosition();
Vector3 bl = rtCore.GetBottomLeftPixelPosition();
Vector3 br = rtCore.GetBottomRightPixelPosition();
UWB_PrimitiveLine t, b, l, r;
t = new UWB_PrimitiveLine();
b = new UWB_PrimitiveLine();
l = new UWB_PrimitiveLine();
r = new UWB_PrimitiveLine();
t.setStartPoint(tr.X, tr.Y, tr.Z);
t.setEndPoint(tl.X, tl.Y, tl.Z);
t.Material.Emissive = Vector4.UnitX;
l.setStartPoint(tl.X, tl.Y, tl.Z);
l.setEndPoint(bl.X, bl.Y, bl.Z);
l.Material.Emissive = Vector4.UnitX;
b.setStartPoint(br.X, br.Y, br.Z);
b.setEndPoint(bl.X, bl.Y, bl.Z);
b.Material.Emissive = Vector4.UnitX;
r.setStartPoint(tr.X, tr.Y, tr.Z);
r.setEndPoint(br.X, br.Y, br.Z);
r.Material.Emissive = Vector4.UnitX;
mCameraPrimitives.append(t);
mCameraPrimitives.append(b);
mCameraPrimitives.append(l);
mCameraPrimitives.append(r);
}
