Exemplos de calcExtends em C++ (Cpp)

Exemplo n.º 1

Arquivo: DetourNavMeshBuilder.cpp Projeto: 1414648814/OpenglESGame

static void subdivide(BVItem* items, int nitems, int imin, int imax, int& curNode, dtBVNode* nodes)
{
	int inum = imax - imin;
	int icur = curNode;
	
	dtBVNode& node = nodes[curNode++];
	
	if (inum == 1)
	{
		// Leaf
		node.bmin[0] = items[imin].bmin[0];
		node.bmin[1] = items[imin].bmin[1];
		node.bmin[2] = items[imin].bmin[2];
		
		node.bmax[0] = items[imin].bmax[0];
		node.bmax[1] = items[imin].bmax[1];
		node.bmax[2] = items[imin].bmax[2];
		
		node.i = items[imin].i;
	}
	else
	{
		// Split
		calcExtends(items, nitems, imin, imax, node.bmin, node.bmax);
		
		int	axis = longestAxis(node.bmax[0] - node.bmin[0],
							   node.bmax[1] - node.bmin[1],
							   node.bmax[2] - node.bmin[2]);
		
		if (axis == 0)
		{
			// Sort along x-axis
			qsort(items+imin, inum, sizeof(BVItem), compareItemX);
		}
		else if (axis == 1)
		{
			// Sort along y-axis
			qsort(items+imin, inum, sizeof(BVItem), compareItemY);
		}
		else
		{
			// Sort along z-axis
			qsort(items+imin, inum, sizeof(BVItem), compareItemZ);
		}
		
		int isplit = imin+inum/2;
		
		// Left
		subdivide(items, nitems, imin, isplit, curNode, nodes);
		// Right
		subdivide(items, nitems, isplit, imax, curNode, nodes);
		
		int iescape = curNode - icur;
		// Negative index means escape.
		node.i = -iescape;
	}
}

Exemplo n.º 2

Arquivo: ChunkyTriMesh.cpp Projeto: DanielNeander/my-3d-engine

static void subdivide(BoundsItem* items, int nitems, int imin, int imax, int trisPerChunk,
					  int& curNode, rcChunkyTriMeshNode* nodes, const int maxNodes,
					  int& curTri, int* outTris, const int* inTris)
{
	int inum = imax - imin;
	int icur = curNode;
	
	if (curNode > maxNodes)
		return;

	rcChunkyTriMeshNode& node = nodes[curNode++];
	
	if (inum <= trisPerChunk)
	{
		// Leaf
		calcExtends(items, nitems, imin, imax, node.bmin, node.bmax);
		
		// Copy triangles.
		node.i = curTri;
		node.n = inum;
		
		for (int i = imin; i < imax; ++i)
		{
			const int* src = &inTris[items[i].i*3];
			int* dst = &outTris[curTri*3];
			curTri++;
			dst[0] = src[0];
			dst[1] = src[1];
			dst[2] = src[2];
		}
	}
	else
	{
		// Split
		calcExtends(items, nitems, imin, imax, node.bmin, node.bmax);
		
		int	axis = longestAxis(node.bmax[0] - node.bmin[0],
							   node.bmax[1] - node.bmin[1]);
		
		if (axis == 0)
		{
			// Sort along x-axis
			qsort(items+imin, inum, sizeof(BoundsItem), compareItemX);
		}
		else if (axis == 1)
		{
			// Sort along y-axis
			qsort(items+imin, inum, sizeof(BoundsItem), compareItemY);
		}
		
		int isplit = imin+inum/2;
		
		// Left
		subdivide(items, nitems, imin, isplit, trisPerChunk, curNode, nodes, maxNodes, curTri, outTris, inTris);
		// Right
		subdivide(items, nitems, isplit, imax, trisPerChunk, curNode, nodes, maxNodes, curTri, outTris, inTris);
		
		int iescape = curNode - icur;
		// Negative index means escape.
		node.i = -iescape;
	}
}