A tool for evaluating multiple NURBS curve/surface points using the GPU.
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
//
|
|
|
|
|
// Created by 14727 on 2022/12/11.
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
#ifndef NURBSEVALUATOR_BVH_CUH
|
|
|
|
|
#define NURBSEVALUATOR_BVH_CUH
|
|
|
|
|
|
|
|
|
|
#include "device/aabb.cuh"
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 当前层的第一个节点的坐标
|
|
|
|
|
* @param layer 层号。根节点为第一层
|
|
|
|
|
*/
|
|
|
|
|
__device__ __host__ int getStartIdxOfLayerN(int layer);
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 根据u、v参数域中的小矩形的位置，判断它在BVH叶节点层（也就是最后一层）中的位置
|
|
|
|
|
*/
|
|
|
|
|
__device__ int d_getChildNodeIdx(int ix, int iy);
|
|
|
|
|
|
|
|
|
|
__host__ int h_getChildNodeIdx(int ix, int iy);
|
|
|
|
|
|
|
|
|
|
class BVH {
|
|
|
|
|
public:
|
|
|
|
|
int maxLevel, size;
|
|
|
|
|
BVHNode *nodes = nullptr;
|
|
|
|
|
|
|
|
|
|
__host__ void printQuadTree();
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
__global__ void
|
|
|
|
|
buildBvh(const float *k, int level, const float *evaluatedPoints, float lastKnot_u, float lastKnot_v,
|
|
|
|
|
int sampleCnt_u, int sampleCnt_v, BVHNode *BVH);
|
|
|
|
|
|
|
|
|
|
#endif //NURBSEVALUATOR_BVH_CUH
|
