C++ Geometry::AllocateTris方法代码示例

Geometry* RawncFile::loadFile(const string& fileName)
{
	bool zeroSeen = false, maxSeen = false;
	//QFileInfo fileInfo(fileName);

	//if (!fileInfo.exists()) {
	//	qDebug("File does not exist");
	//	return 0;
	//}
	struct stat fst;
	if (stat(fileName.c_str(), &fst) == -1) {
		printf("File does not exist\n");
		return 0;
	}

	//QString absFilePath = fileInfo.absFilePath();

	//FILE* fp = fopen(absFilePath, "r");
	FILE* fp = fopen(fileName.c_str(), "r");
	if (!fp) {
		//qDebug("Error opening file");
		printf("Error opening file\n");
		return 0;
	}

	// get the number of verts and triangles
	int numverts, numtris;
	if (2!=fscanf(fp, "%d %d", &numverts, &numtris)) {
		//qDebug("Error reading in number of verts and tris");
		printf("Error reading in number of verts and tris\n");
		fclose(fp);
		return 0;
	}
	// make sure the number of verts & tris are positive
	if (numverts<0 || numtris<0) {
		//qDebug("Negative number of verts or tris");
		printf("Negative number of verts or tris\n");
		fclose(fp);
		return 0;
	}

	// initialize the geometry
	Geometry* geometry = new Geometry();
	geometry->AllocateTris(numverts, numtris);
	geometry->AllocateTriVertColors();


	int c;
	// read in the verts
	for (c=0; c<numverts; c++) {
		// read in a single vert, which includes 
		// position and normal
		if (9!=fscanf(fp, "%f %f %f %f %f %f %f %f %f", 
			&(geometry->m_TriVerts[c*3+0]),
			&(geometry->m_TriVerts[c*3+1]),
			&(geometry->m_TriVerts[c*3+2]),
			&(geometry->m_TriVertNormals[c*3+0]),
			&(geometry->m_TriVertNormals[c*3+1]),
			&(geometry->m_TriVertNormals[c*3+2]),
			&(geometry->m_TriVertColors[c*3+0]),
			&(geometry->m_TriVertColors[c*3+1]),
			&(geometry->m_TriVertColors[c*3+2]))) {
			//qDebug("Error reading in vert # %d", c);
			printf("Error reading in vert # %d\n", c);
			delete geometry;
			fclose(fp);
			return 0;
		}
	}
	// read in the triangles
	for (c=0; c<numtris; c++) {
		// read in 3 integers for each triangle
		if (3!=fscanf(fp, "%u %u %u", 
			&(geometry->m_Tris[c*3+0]),
			&(geometry->m_Tris[c*3+1]),
			&(geometry->m_Tris[c*3+2]))) {
			//qDebug("Error reading in tri # %d", c);
			printf("Error reading in tri # %d\n", c);
			delete geometry;
			fclose(fp);
			return 0;
		}
		// the file might start indexing verts from 1 or 0
		// check if indexes go up to the num of verts or if they
		// start from 0
		if (geometry->m_Tris[c*3+0]==0 || geometry->m_Tris[c*3+1]==0 || geometry->m_Tris[c*3+2]==0 ) {
			zeroSeen = true;
		}
		if (geometry->m_Tris[c*3+0]==(unsigned int)numverts || geometry->m_Tris[c*3+1]==(unsigned int)numverts || geometry->m_Tris[c*3+2]==(unsigned int)numverts ) {
			maxSeen = true;
		}
		// cant have both!
		if (maxSeen && zeroSeen) {
			//qDebug("Found 0 & max in tri # %d", c);
			printf("Found 0 & max in tri # %d\n", c);
			delete geometry;
			fclose(fp);
			return 0;
		}

//.........这里部分代码省略.........

Geometry* RawFile::loadFile(const string& fileName)
{
  cvcraw_geometry::geometry_t geom;
  
  try
    {
      cvcraw_geometry::read(geom, fileName);
    }
  catch(std::exception& e)
    {
      printf("Error: %s\n", e.what());
      return 0;
    }

  bool haveColor = !geom.colors.empty();

  Geometry *geometry = new Geometry();
  
  if(!geom.lines.empty())
    {
      geometry->AllocateLines(geom.points.size(),
			      geom.lines.size());

      for(unsigned int i = 0; i < geom.lines.size(); i++)
	{
	  geometry->m_Lines[i*2+0] = geom.lines[i][0];
	  geometry->m_Lines[i*2+1] = geom.lines[i][1];
	}
    }
  else if(!geom.tris.empty())
    {
      geometry->AllocateTris(geom.points.size(),
			     geom.tris.size());

      for(unsigned int i = 0; i < geom.tris.size(); i++)
	{
	  geometry->m_Tris[i*3+0] = geom.tris[i][0];
	  geometry->m_Tris[i*3+1] = geom.tris[i][1];
	  geometry->m_Tris[i*3+2] = geom.tris[i][2];
	}
    }
  else if(!geom.quads.empty())
    {
      geometry->AllocateQuads(geom.points.size(),
			      geom.quads.size());

      for(unsigned int i = 0; i < geom.quads.size(); i++)
	{
	  geometry->m_Quads[i*4+0] = geom.quads[i][0];
	  geometry->m_Quads[i*4+1] = geom.quads[i][1];
	  geometry->m_Quads[i*4+2] = geom.quads[i][2];
	  geometry->m_Quads[i*4+3] = geom.quads[i][3];
	}
    }
  else if(!geom.points.empty())
    {
      geometry->AllocatePoints(geom.points.size());
      geometry->AllocatePointNormals();
      geometry->AllocatePointColors();
    }

  for(unsigned int i = 0; i < geom.points.size(); i++)
    {
      geometry->m_Points[i*3+0] = geom.points[i][0];
      geometry->m_Points[i*3+1] = geom.points[i][1];
      geometry->m_Points[i*3+2] = geom.points[i][2];
    }

  if(!geom.normals.empty())
    {
      for(unsigned int i = 0; i < geom.points.size(); i++)
	{
	  geometry->m_PointNormals[i*3+0] = geom.normals[i][0];
	  geometry->m_PointNormals[i*3+1] = geom.normals[i][1];
	  geometry->m_PointNormals[i*3+2] = geom.normals[i][2];
	}
    }
      
  if(!geom.colors.empty())
    {
      for(unsigned int i = 0; i < geom.colors.size(); i++)
	{
	  geometry->m_PointColors[i*3+0] = geom.colors[i][0];
	  geometry->m_PointColors[i*3+1] = geom.colors[i][1];
	  geometry->m_PointColors[i*3+2] = geom.colors[i][2];
	}
    }

  return geometry;
#if 0
	bool zeroSeen = false, maxSeen = false;
	//QFileInfo fileInfo(fileName);

	//if (!fileInfo.exists()) {
	//	qDebug("File does not exist");
	//	return 0;
	//}
	struct stat fst;
	if (stat(fileName.c_str(), &fst) == -1) {
		printf("File does not exist\n");
//.........这里部分代码省略.........