public void UpdateCamDist(CameraSceneObject camera)
{
float dx, dy, dz;
dx = center.x - camera.Position.x;
dy = center.y - camera.Position.y;
dz = center.z - camera.Position.z;
camDist = (float)System.Math.Sqrt(dx * dx + dy * dy + dz * dz);
}
public override void Render(IGraphics graphics, CameraSceneObject camera)
{
graphics.Lighting = false;
var oldMatrix = graphics.WorldMatrix;
graphics.WorldMatrix = Matrix.Translation(camera.Position.x, camera.Position.y, camera.Position.z);
graphics.Filtering = false;
graphics.RenderTriangleStrip(VertexPoolIndex, 0, 8, TextureIndex, -1);
graphics.RenderTriangleStrip(VertexPoolIndex, 8, 8, TextureIndex, -1);
graphics.Filtering = true;
graphics.WorldMatrix = oldMatrix;
}
public override void Render(IGraphics graphics, CameraSceneObject camera)
{
int i, j;
float d;
Plane plane;
bool[] pvs;
ArrayList visFaces;
BspFace face;
bool visible;
bool firstAlphaFace;
using (Profiler.StartSample("HLBSPMap.Render"))
{
// create visible faces list
visFaces = new ArrayList();
// add faces to visible faces list
if (BSPRendering)
{
// get camera node
using (Profiler.StartSample("get camera leaf"))
{
i = 0;
while (i >= 0)
{
plane = Planes[Nodes[i].plane];
d = plane.Distance(camera.Position);
if (d >= 0.0f)
{
i = Nodes[i].frontChild;
}
else
{
i = Nodes[i].backChild;
}
}
}
// get pvs for current leaf (~i => -(i + 1))
using (Profiler.StartSample("decompress pvs"))
{
i = Leaves[~i].pvs;
pvs = DecompressPvs(i);
}
// add visible faces
using (Profiler.StartSample("add visible faces"))
{
for (i = 0; i < Leaves.Length; i++) // go through all leaves
{
visible = i == 0;
if (!visible)
{
visible = pvs[i - 1];
}
if (visible) // if leaf is visible
{
for (j = 0; j < Leaves[i].numMarkFaces; j++) // go through all faces of leaf ..
{
face = Faces[MarkFaces[Leaves[i].firstMarkFace + j]];
if (face.texture < 0)
{
continue;
}
if (face.model)
{
continue;
}
visFaces.Add(face); // .. and add them
}
}
}
}
// add all model faces
using (Profiler.StartSample("add model faces"))
{
visFaces.AddRange(ModelFaces);
}
}
else
{
using (Profiler.StartSample("add all faces"))
{
for (i = 0; i < Faces.Length; i++)
{
face = Faces[i];
if (face.texture < 0)
{
continue;
}
visFaces.Add(face);
}
}
}
// perform frustum culling on visible faces
if (FrustumCulling)
{
using (Profiler.StartSample("frustum culling"))
{
for (i = visFaces.Count - 1; i >= 0; i--)
{
face = (BspFace)visFaces[i];
if (!camera.InsideFrustum(face.center, face.radius))
{
visFaces.RemoveAt(i);
}
}
}
}
// update camera distance of visible faces
using (Profiler.StartSample("update face distance"))
{
for (i = 0; i < visFaces.Count; i++)
{
((BspFace)visFaces[i]).UpdateCamDist(camera);
}
}
// sort visible faces
using (Profiler.StartSample("sort faces"))
{
visFaces.Sort();
}
// render visible faces + sky somewher ebetween the transparant and the solid faces
using (Profiler.StartSample("render faces"))
{
firstAlphaFace = false;
for (i = 0; i < visFaces.Count; i++)
{
face = (BspFace)visFaces[i];
if (face.IsTransparant())
{
if (!firstAlphaFace && Sky != null)
{
// render skybox
using (Profiler.StartSample("render sky"))
{
Sky.Render(graphics, camera);
}
firstAlphaFace = true;
}
graphics.AlphaBlending = true;
graphics.Alpha = face.alpha;
graphics.TextureAlpha = face.textureAlpha;
}
else
{
graphics.AlphaBlending = false;
}
graphics.Lighting = face.lightmap >= 0;
graphics.RenderTriangleFan(VertexPoolIndex, face.firstVertex, face.numVertices, face.texture, face.lightmap);
}
if (!firstAlphaFace && Sky != null)
{
// render skybox
using (Profiler.StartSample("render sky"))
{
Sky.Render(graphics, camera);
}
}
}
}
}
public virtual void Render(IGraphics graphics, CameraSceneObject camera)
{
}