private void GetEdgePoints(BaseCamera viewerCamera, ConvexVolume volume, out Vector3 LBN, out Vector3 RTF)
{
Vector3 ViewerPosition = viewerCamera.GetEyeVector();
// Find left and right edges
Vector3 IntersectionPointC = GetLeftRightIntersectionPoint(ViewerPosition, volume.FarPlane, volume.LeftPlane);
Vector3 IntersectionPointB = GetLeftRightIntersectionPoint(ViewerPosition, volume.FarPlane, volume.RightPlane);
// Find top and bottom edges
Vector3 IntersectionPointBottom = GetTopBottomIntersectionPoint(ViewerPosition, volume.FarPlane, volume.BottomPlane);
Vector3 IntersectionPointTop = GetTopBottomIntersectionPoint(ViewerPosition, volume.FarPlane, volume.TopPlane);
float left, right, top, bottom, near, far;
// left
Dictionary <float, Vector3> projectedValues = new Dictionary <float, Vector3>();
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointB, -RightVector), IntersectionPointB);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointC, -RightVector), IntersectionPointC);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(ViewerPosition, -RightVector), ViewerPosition);
left = projectedValues[projectedValues.Keys.Max()].X;
// right
projectedValues.Clear();
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointB, RightVector), IntersectionPointB);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointC, RightVector), IntersectionPointC);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(ViewerPosition, RightVector), ViewerPosition);
right = projectedValues[projectedValues.Keys.Max()].X;
// top
projectedValues.Clear();
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointTop, UpVector), IntersectionPointTop);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointBottom, UpVector), IntersectionPointBottom);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(ViewerPosition, UpVector), ViewerPosition);
top = projectedValues[projectedValues.Keys.Max()].Y;
// bottom
projectedValues.Clear();
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointTop, -UpVector), IntersectionPointTop);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointBottom, -UpVector), IntersectionPointBottom);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(ViewerPosition, -UpVector), ViewerPosition);
bottom = projectedValues[projectedValues.Keys.Max()].Y;
// far
projectedValues.Clear();
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointB, ForwardVector), IntersectionPointB);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointC, ForwardVector), IntersectionPointC);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(ViewerPosition, ForwardVector), ViewerPosition);
far = projectedValues[projectedValues.Keys.Max()].Z;
// near
projectedValues.Clear();
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointB, -ForwardVector), IntersectionPointB);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(IntersectionPointC, -ForwardVector), IntersectionPointC);
projectedValues.Add(GeometryMath.ProjectVectorOnNormalizedVector(ViewerPosition, -ForwardVector), ViewerPosition);
near = projectedValues[projectedValues.Keys.Max()].Z;
LBN = new Vector3(left, bottom, near);
RTF = new Vector3(right, top, far);
}
public static bool IsPointInsideConvexVolume(ConvexVolume convexVolume, Vector3 point)
{
bool bResult = false;
for (Int32 i = 0; i < 6; i++)
{
bResult = IsPointIsidePlane(convexVolume[i], point, convexVolume.relativePosition);
if (!bResult)
{
break;
}
}
return(bResult);
}
public Matrix4 CreateOrthographicProjection(BaseCamera viewerCamera, ref Matrix4 projectionMatrix)
{
Matrix4 result = Matrix4.Identity;
Matrix4 ViewProjectionMatrix = Matrix4.Identity;
ViewProjectionMatrix *= viewerCamera.GetViewMatrix();
ViewProjectionMatrix *= projectionMatrix;
ConvexVolume cameraVolume = new ConvexVolume(ViewProjectionMatrix);
Vector3 lbn, rtf;
GetEdgePoints(viewerCamera, cameraVolume, out lbn, out rtf);
result = Matrix4.CreateOrthographic(rtf.X - lbn.X, 100, 1, 400);
return(result);
}
void PickUpThing(ConvexVolume cv)
{
PickUp pu = cv.mOwner.GetComponent(typeof(PickUp)) as PickUp;
pu.StateChange(PickUp.State.WaitingRespawn, 1);
StaticMeshComp smc = pu.mOwner.GetComponent(typeof(StaticMeshComp)) as StaticMeshComp;
StaticMesh sm = smc.mDrawObject as StaticMesh;
int numParts = sm.GetNumParts();
for (int i = 0; i < numParts; i++)
{
sm.SetPartVisible(i, false);
}
}
//called once before render with accumulated delta
//do all once per render style updates in here
internal void RenderUpdate(float msDelta)
{
if (msDelta <= 0f)
{
return; //can happen if fixed time and no remainder
}
//check pvs against entities
mVisibleSMC.Clear();
foreach (StaticMeshComp smc in mStaticComps)
{
Vector3 smPos = smc.mPO.GetPosition();
if (mZone.IsVisibleFrom(mGD.GCam.Position, smPos))
{
mVisibleSMC.Add(smc);
}
}
//update meshlighting for visible
foreach (StaticMeshComp smc in mVisibleSMC)
{
MeshLighting ml = smc.mOwner.GetComponent(typeof(MeshLighting)) as MeshLighting;
ConvexVolume cv = smc.mOwner.GetComponent(typeof(ConvexVolume)) as ConvexVolume;
ml.Update(msDelta / 1000f, smc.mPO.GetPosition() + cv.SizeY * 0.5f);
}
mZoneDraw.Update(msDelta);
mZoneMats.UpdateWVP(Matrix.Identity, mGD.GCam.View, mGD.GCam.Projection, mGD.GCam.Position);
if (mStaticMats != null)
{
mStaticMats.UpdateWVP(Matrix.Identity, mGD.GCam.View, mGD.GCam.Projection, mGD.GCam.Position);
}
if (mPMats != null)
{
mPMats.UpdateWVP(Matrix.Identity, mGD.GCam.View, mGD.GCam.Projection, mGD.GCam.Position);
}
mShadKeeper.StartNewFrame();
mShadKeeper.ComputeBatch(mPMob.GetEyePos());
}
