//--------------------------------
private void WalkNodeHierarchy(TreeNodeAdv parentTreeNode, ModelNode node)
{
// add the current node to the tree.
TreeNodeAdv curTreeNode = new TreeNodeAdv(node.Name);
parentTreeNode.Nodes.Add(curTreeNode);
// now add mesh instances to the tree.
int meshInstCount = node.MeshInstCount;
for (int i = 0; i < meshInstCount; ++i)
{
// add the instance.
MeshInst inst = node.GetMeshInst(i);
TreeNodeAdv curMeshNode = new TreeNodeAdv("< mesh >");
curTreeNode.Nodes.Add(curMeshNode);
// add the instance's ranges.
Mesh mesh = inst.Mesh;
for (int j = 0; j < inst.RangeCount; ++j)
{
// get the range info.
RangeInfo range;
if (!mesh.GetRange(out range, j))
{
continue;
}
// get the material assignend to that range.
Material material = inst.GetMaterial(j);
if (material == null)
{
continue;
}
// add the name of the range.
TreeNodeAdv curRangeNode = new TreeNodeAdv(range.Name);
curMeshNode.Nodes.Add(curRangeNode);
// add the range's material.
TreeNodeAdv curMatNode = new TreeNodeAdv(material.Name);
curRangeNode.Nodes.Add(curMatNode);
// add statistics.
TreeNodeAdv curTriCountNode = new TreeNodeAdv(range.Count.ToString() + " tris");
curRangeNode.Nodes.Add(curTriCountNode);
}
}
// recurse children.
int childCount = node.ChildCount;
for (int i = 0; i < childCount; ++i)
{
WalkNodeHierarchy(curTreeNode, node.GetChild(i));
}
}
//--------------------------------
private void AddUberizeItem(TreeNodeAdv parent, MeshInst inst)
{
TreeNodeAdv meshNode = new TreeNodeAdv(inst.Mesh.Name);
parent.Nodes.Add(meshNode);
// iterate through mesh instance's ranges.
int rangeIndex = 0;
Mesh mesh = inst.Mesh;
for (int i = 0; i < inst.RangeCount; ++i)
{
// get the range info.
RangeInfo range;
if (!mesh.GetRange(out range, i))
{
continue;
}
TreeNodeAdv rangeNode = new TreeNodeAdv(range.Name);
meshNode.Nodes.Add(rangeNode);
// fill out a new key.
MeshInstRange key = new MeshInstRange();
key.inst = inst;
key.range = rangeIndex;
// check for the current mesh instance/range pair.
if (_uberizeItems.ContainsKey(key))
{
// increment the reference count if necessary.
_uberizeItems[key] += 1;
}
else
{
// TODO: Calculate a valid default matrix.
_uberizeItems.Add(key, 1);
rangeNode.Tag = key;
}
}
}
static void ExportObj()
{
var obj = Selection.activeGameObject;
if (obj == null)
{
return;
}
List <MeshInst> meshs = new List <MeshInst>();
var ms = obj.GetComponentsInChildren <MeshRenderer>();
for (int i = 0; i < ms.Length; i++)
{
var mats = ms[i].sharedMaterials;
var mf = ms[i].GetComponent <MeshFilter>();
if (mf != null && mf.sharedMesh != null)
{
MeshInst inst = new MeshInst();
inst.obj = ms[i].gameObject;
inst.mats = mats;
inst.texs = new Texture2D[mats.Length];
for (int j = 0; j < mats.Length; j++)
{
if (mats[j] != null)
{
inst.texs[j] = mats[j].mainTexture as Texture2D;
}
}
inst.mesh = mf.sharedMesh;
inst.vertices = inst.mesh.vertices;
inst.uv = inst.mesh.uv;
inst.normals = inst.mesh.normals;
inst.submeshs = new List <int[]>();
for (int j = 0; j < inst.mesh.subMeshCount; j++)
{
inst.submeshs.Add(inst.mesh.GetIndices(j));
}
meshs.Add(inst);
}
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < meshs.Count; i++)
{
var inst = meshs[i];
for (int j = 0; j < inst.vertices.Length; j++)
{
var pos = inst.vertices[j];
pos = inst.obj.transform.localToWorldMatrix.MultiplyPoint3x4(pos);
sb.AppendFormat("v {0} {1} {2}\r\n", -pos.x, pos.y, pos.z);
}
if (i == 0)
{
inst.startIndex = 0;
}
else
{
inst.startIndex = meshs[i - 1].startIndex + meshs[i - 1].vertices.Length;
}
}
for (int i = 0; i < meshs.Count; i++)
{
var inst = meshs[i];
for (int j = 0; j < inst.uv.Length; j++)
{
var uv = inst.uv[j];
sb.AppendFormat("vt {0} {1}\r\n", uv.x, uv.y);
}
}
for (int i = 0; i < meshs.Count; i++)
{
var inst = meshs[i];
for (int j = 0; j < inst.normals.Length; j++)
{
var nor = inst.normals[j];
sb.AppendFormat("vn {0} {1} {2}\r\n", -nor.x, nor.y, nor.z);
}
}
sb.Append("mtllib scene.mtl\r\n");
for (int i = 0; i < meshs.Count; i++)
{
var inst = meshs[i];
for (int j = 0; j < inst.submeshs.Count; j++)
{
var indices = inst.submeshs[j];
sb.AppendFormat("g group_{0}_{1}\r\n", i, j);
sb.AppendFormat("usemtl mat_{0}_{1}\r\n", i, j);
for (int k = 0; k < indices.Length; k += 3)
{
var i0 = indices[k];
var i1 = indices[k + 2];
var i2 = indices[k + 1];
sb.AppendFormat("f {0}/{0}/{0} {1}/{1}/{1} {2}/{2}/{2}\r\n", inst.startIndex + i0 + 1, inst.startIndex + i1 + 1, inst.startIndex + i2 + 1);
}
}
}
if (!Directory.Exists("scene_obj_export"))
{
Directory.CreateDirectory("scene_obj_export");
}
File.WriteAllText("Assets/scene.obj", sb.ToString());
sb = new StringBuilder();
for (int i = 0; i < meshs.Count; i++)
{
var inst = meshs[i];
for (int j = 0; j < inst.texs.Length; j++)
{
if (inst.texs[j] != null)
{
var path = AssetDatabase.GetAssetPath(inst.texs[j]);
var name = new FileInfo(path).Name;
if (!File.Exists("scene_obj_export/" + name))
{
File.Copy(path, "scene_obj_export/" + name, false);
}
sb.AppendFormat("newmtl mat_{0}_{1}\r\n", i, j);
sb.Append("Kd 1.000 1.000 1.000\r\n");
sb.AppendFormat("map_Kd {0}\r\n", name);
}
}
}
File.WriteAllText("Assets/scene.mtl", sb.ToString());
Debug.Log("export done.");
}
//-----------------------
public void Paint(MeshInst meshInst, int rangeIdx, uint[] triangleMask, PaintMode paintMode)
{
if (meshInst == null)
{
return;
}
Mesh mesh = meshInst.Mesh;
if (mesh == null)
{
return;
}
// get the material associated with the meshInst's range.
Material material = meshInst.GetMaterial(rangeIdx);
if (material == null)
{
return;
}
// if the material isn't ubertextured, skip it.
if (!material.Ubertextured)
{
return;
}
// determine if the current range and the paint frustum
// intersect.
if (!_maskCamera.Frustum.IsOBoxInside(meshInst.GetRangeOBox(rangeIdx)))
{
return;
}
// configure the ubertexture renderer for the current material's
// targets.
UberTexture uberTexture = new UberTexture(material.GetPass(0).UberTexture);
if (uberTexture == null)
{
return;
}
_target = uberTexture;
// get the inverse of the mesh instance's transform. This is
// so we can move the cameras into the mesh instance's local
// space for culling and rasterization purposes.
Matrix invInstXForm = new Matrix();
if (!meshInst.Transform.Inverse(out invInstXForm))
{
return;
}
// get the source camera's transform.
Matrix sourceCamXForm = new Matrix(_sourceCamera.Rotation, _sourceCamera.Position);
Matrix maskCamXForm = new Matrix(_maskCamera.Rotation, _maskCamera.Position);
sourceCamXForm = invInstXForm * sourceCamXForm;
maskCamXForm = invInstXForm * maskCamXForm;
// build cameras that are local to the mesh instance.
Camera localSourceCamera = new Camera(sourceCamXForm.Translate, sourceCamXForm.Rotate,
_sourceCamera.Projection);
Camera localMaskCamera = new Camera(maskCamXForm.Translate, maskCamXForm.Rotate,
_maskCamera.Projection);
// set the paint targets.
_rasterizer.RenderTarget = _target;
// set the camera info.
_rasterizer.SetVertexConstants(0, localSourceCamera.ViewProjMatrix);
_rasterizer.SetVertexConstants(4, localMaskCamera.ViewProjMatrix);
// set the blending mode to accumulate.
float blendingMode = 1.0f;
if (_maskPaintMode == MaskMode.Subtract)
{
blendingMode = 0.0f;
}
// if the paint mode is 'fill' then disable the per-pixel clip.
float perPixelClip = 1.0f;
if (paintMode == PaintMode.Fill)
{
perPixelClip = 0.0f;
}
// set the mask-only value.
float maskValue = 0.0f;
if (paintMode == PaintMode.Mask)
{
maskValue = 1.0f;
}
// setup the shader modes.
_rasterizer.SetFragmentConstant(0, new Vector4(blendingMode, perPixelClip, maskValue, 0.0f));
// set the camera's rotation for normals.
Matrix cameraRot = new Matrix(localSourceCamera.Rotation, new Vector3(0.0f, 0.0f, 0.0f));
_rasterizer.SetFragmentConstants(1, cameraRot);
// now grab the mesh's vertices and throw them at the
// uber-texture renderer.
uint triCount = CalculateVisibleTriangles(localMaskCamera, meshInst.Mesh, rangeIdx);
// now render the visible triangles.
_rasterizer.RenderTriangleList(meshInst.Mesh.VertexBuffer, _visibleTriangles,
0, 3 * triCount);
}