protected override void CreateScene()
{
mLog = LogManager.Singleton.createLog("DemoGrass.log", false, true);
mLog.LogMessage(string.Format("DemoGrass log {0}", System.DateTime.Now));
//Init waveGrass varibles
xinc = OgreMath.PI * 0.4f;
zinc = OgreMath.PI * 0.55f;
xpos = OgreMath.RangeRandom(-OgreDotNet.OgreMath.PI, OgreDotNet.OgreMath.PI);
zpos = OgreMath.RangeRandom(-OgreDotNet.OgreMath.PI, OgreDotNet.OgreMath.PI);
xxoffset = new Math3D.Vector4(0.0f, 0.0f, 0.0f, 0.0f);
mSceneManager.SetSkyBox(true, "Examples/SpaceSkyBox");
setupLighting();
mSceneManager.AmbientLightColor = Color.FromArgb(125, 125, 125, 125);
//create a ground plain
mLog.LogMessage("Point 1");
Plane plane = new Plane();
plane.Normal.x = 0;
plane.Normal.y = 1;
plane.Normal.z = 0;
plane.D = 0;
MeshManager.GetSingleton().CreatePlane("Myplane", "General", plane,
14500, 14500, 10, 10, true, 1, 50, 50, Vector3.UnitZ);
Entity pPlaneEnt = mSceneManager.CreateEntity("plane", "Myplane");
pPlaneEnt.SetMaterialName("Examples/GrassFloor");
pPlaneEnt.SetCastShadows(false);
mSceneManager.GetRootSceneNode().CreateChildSceneNode().AttachObject(pPlaneEnt);
//create the grass mesh
mLog.LogMessage("Point 2");
createGrassMesh2();
Entity e = null;
e = mSceneManager.CreateEntity("1", GRASS_MESH_NAME);
//close the the grass mesh in a region
StaticGeometry s = mSceneManager.CreateStaticGeometry("bing");
s.setRegionDimensions(new Vector3(1000, 1000, 1000));
// Set the region origin so the centre is at 0 world
s.setOrigin(new Vector3(-500, 500, -500));
mLog.LogMessage("Point 3");
for (int x = -1950; x < 1950; x += 150) //1950
{
for (int z = -1950; z < 1950; z += 150)
{
Vector3 pos;
pos.x = x + OgreMath.RangeRandom(-25, 25);
pos.y = 0;
pos.z = z + OgreMath.RangeRandom(-25, 25);
Quaternion orientation = Quaternion.FromAngleAxis(
new Degree(OgreMath.RangeRandom(0, 359)).ValueDegrees(), Vector3.UnitY);
Vector3 scale = new Vector3(1, OgreMath.RangeRandom(0.85f, 1.15f), 1);
s.addEntity(e, pos, orientation, scale);
}
}
mLog.LogMessage("Point 4");
s.build();
mStaticGeom = s;
//mStaticGeom.dump("Grass.SG.Dump.txt");
//Put an Ogre head in the middle
mLog.LogMessage("Point 5");
OgreDotNet.MeshPtr m = MeshManager.GetSingleton().Load("ogrehead.mesh", "General");
Mesh mm = m.Get();
UInt16 src = 0, dest = 0;
if (!mm.SuggestTangentVectorBuildParams(ref src, ref dest))
{
mLog.LogMessage("got from SuggestTangentVectorBuildParams src=" + src + " dest=" + dest);
mm.BuildTangentVectors(src, dest);
}
e = mSceneManager.CreateEntity("head", "ogrehead.mesh");
e.SetMaterialName("Examples/OffsetMapping/Specular");
SceneNode headNode = mSceneManager.GetRootSceneNode().CreateChildSceneNode();
headNode.AttachObject(e);
headNode.SetScale(7, 7, 7);
headNode.SetPosition(0, 200, 0);
e.SetNormaliseNormals(true);
mLog.LogMessage("Point 6");
//setup camera position
mCamera.Move(new Vector3(0, 350, 800));
mCamera.LookAt = new Vector3(0, 200, 0);
mLog.LogMessage("Point end");
}
/// <summary>
/// createGrassMesh
/// This demonstrates how to create a manual mesh
/// only use static members of MeshBuilderHelper to help set vertex and index data.
/// </summary>
void createGrassMesh()
{
OgreDotNet.MeshPtr mp = MeshManager.Instance.CreateManual(GRASS_MESH_NAME, "General");
SubMesh sm = mp.Get().CreateSubMesh();
sm.useSharedVertices = false;
sm.vertexData = new VertexData();
sm.vertexData.vertexStart = 0;
sm.vertexData.vertexCount = 12;
//mIndexType = HardwareIndexBuffer::IT_16BIT;
VertexDeclaration dcl = sm.vertexData.vertexDeclaration;
UInt32 offset = 0;
UInt32 offPos = dcl.addElement(0, offset, VertexElementType.VET_FLOAT3, VertexElementSemantic.VES_POSITION).getOffset();
offset = VertexElement.getTypeSize(VertexElementType.VET_FLOAT3);
UInt32 offNorm = dcl.addElement(0, offset, VertexElementType.VET_FLOAT3, VertexElementSemantic.VES_NORMAL).getOffset();
offset += VertexElement.getTypeSize(VertexElementType.VET_FLOAT3);
UInt32 offUV = dcl.addElement(0, offset, VertexElementType.VET_FLOAT2, VertexElementSemantic.VES_TEXTURE_COORDINATES).getOffset();
offset += VertexElement.getTypeSize(VertexElementType.VET_FLOAT2);
UInt32 vertexsize = offset;
mLog.LogMessage(string.Format("createGrassMesh vertexsize={0}", vertexsize));
HardwareVertexBufferSharedPtr vbuf = HardwareBufferManager.getSingleton().createVertexBuffer(
vertexsize, 12, HardwareBuffer.Usage.HBU_STATIC_WRITE_ONLY);
IntPtr pV = vbuf.Get().Lock(HardwareBuffer.LockOptions.HBL_DISCARD);
Vector3 vec = new Vector3(GRASS_WIDTH / 2.0f, 0.0f, 0.0f);
Quaternion rot = Quaternion.FromAngleAxis(60, Vector3.UnitY);
uint i;
for (i = 0; i < 3; ++i)
{
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 0, offPos, -vec.x, GRASS_HEIGHT, -vec.z); //position
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 0, offNorm, 0.0f, 1.0f, 0.0f); //normal
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 0, offUV, 0.0f, 0.0f); //uv
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 1, offPos, vec.x, GRASS_HEIGHT, vec.z); //position
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 1, offNorm, 0.0f, 1.0f, 0.0f); //normal
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 1, offUV, 1.0f, 0.0f); //uv
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 2, offPos, -vec.x, 0.0f, -vec.z); //position
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 2, offNorm, 0.0f, 1.0f, 0.0f); //normal
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 2, offUV, 0.0f, 1.0f); //uv
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 3, offPos, vec.x, 0.0f, vec.z); //position
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 3, offNorm, 0.0f, 1.0f, 0.0f); //normal
OgreDotNet.MeshBuilderHelper.SetVertexFloat(pV, vertexsize, (i * 4) + 3, offUV, 1.0f, 1.0f); //uv
vec = rot * vec;
}
vbuf.Get().Unlock();
sm.vertexData.vertexBufferBinding.setBinding(0, vbuf);
sm.indexData.indexCount = 6 * 3;
sm.indexData.indexBuffer = HardwareBufferManager.getSingleton().createIndexBuffer(
HardwareIndexBuffer.IndexType.IT_16BIT, 6 * 3, HardwareBuffer.Usage.HBU_STATIC_WRITE_ONLY);
IntPtr pI = sm.indexData.indexBuffer.Get().Lock(HardwareBuffer.LockOptions.HBL_DISCARD);
for (i = 0; i < 3; ++i)
{
UInt16 off = (UInt16)(i * 4);
OgreDotNet.MeshBuilderHelper.SetIndex16bit(pI, (i * 2) + 0, (UInt16)(0 + off), (UInt16)(3 + off), (UInt16)(1 + off));
OgreDotNet.MeshBuilderHelper.SetIndex16bit(pI, (i * 2) + 1, (UInt16)(0 + off), (UInt16)(2 + off), (UInt16)(3 + off));
}
sm.indexData.indexBuffer.Get().Unlock();
sm.SetMaterialName(GRASS_MATERIAL);
mp.Get().Load();
}
