modify some files

README.md

@@ -1 +1,18 @@
-Nurbs curve surface intersection calculation
+Nurbs curve surface intersection check.
+
+## Dependencies
+
+**STL**, **Libigl**, **Eigen**, **Ginac** and the dependencies of the **igl::opengl::glfw::Viewer (OpenGL, glad and GLFW)**. The  CMake build system will automatically download libigl and its dependencies using CMake FetchContent, thus requiring no setup on your part. **As for Ginac, you need to download it by yourself before the cmake build.**
+
+## Compile
+```
+mkdir build
+cd build
+cmake ..
+make
+```
+
+## Run
+```
+./NurbsIntersection
+```

include/bvh.hpp

@@ -43,10 +43,10 @@ public:
     {
         return bvh_aabb_node;
     };
-    BVH_AABB_NodePtr Build_NurbsCurve(tinynurbs::RationalCurve<double> &curve, BVH_AABB_NodePtr &curNode, int curLevel, double t, double tstep);
-    BVH_AABB_NodePtr Build_NurbsSurface(tinynurbs::RationalSurface<double> &surface, BVH_AABB_NodePtr &curNode, int curLevel, double u, double v, double ustep, double vstep);
     AABB UnionBound(const AABB &a, const AABB &b);
     AABB UpdateBound(const AABB &bound, const glm::vec3 &p);
+    BVH_AABB_NodePtr Build_NurbsCurve(tinynurbs::RationalCurve<double> &curve, BVH_AABB_NodePtr &curNode, int curLevel, double t, double tstep);
+    BVH_AABB_NodePtr Build_NurbsSurface(tinynurbs::RationalSurface<double> &surface, BVH_AABB_NodePtr &curNode, int curLevel, double u, double v, double ustep, double vstep);
 };
 
 #endif // !BVH_H_

include/mathdef.hpp

@@ -0,0 +1,4 @@
+#ifndef MATHDEF_H_
+#define MATHDEF_H_
+
+#endif

include/newton.hpp

@@ -1 +0,0 @@
-#include <ginac/ginac.h>

src/main.cpp

@@ -9,7 +9,6 @@ int main(int argc, char *argv[])
 
     viewer.data().point_size = 5;
 
-    /*
     tinynurbs::RationalCurve<double> crv;      // Planar curve using float32
     crv.control_points = {glm::vec3(-3, 0, 0), // std::vector of 3D points
                           glm::vec3(-2, 2, 3),
@@ -21,11 +20,12 @@ int main(int argc, char *argv[])
     crv.weights = {1, 1, 1, 1, 1};
 
     ShowCurve_Igl(viewer, crv, 100);
-    BVH_AABB bvh_curve(5, 2, 100);
+    BVH_AABB bvh_curve(8, 2, 100);
     double tstep = *(crv.knots.end() - 1);
     bvh_curve.Build_NurbsCurve(crv, bvh_curve.bvh_aabb_node, 0, 0, tstep);
     ShowBVHNode(viewer, bvh_curve.bvh_aabb_node);
-    */
+
+    /*
      tinynurbs::RationalCurve<double> crv;        // Planar curve using float32
      crv.control_points = {glm::vec3(-3, -3, -3), // std::vector of 3D points
                            glm::vec3(-2, -2, -2),
@@ -35,12 +35,24 @@ int main(int argc, char *argv[])
      crv.knots = {0, 0, 0, 1, 2, 3, 3, 3}; // std::vector of floats
      crv.degree = 2;
      crv.weights = {1, 1, 1, 1, 1};
+     */
 
+    /*
     ShowCurve_Igl(viewer, crv, 100);
     BVH_AABB bvh_curve(5, 2, 100);
     double tstep = *(crv.knots.end() - 1);
     bvh_curve.Build_NurbsCurve(crv, bvh_curve.bvh_aabb_node, 0, 0, tstep);
     ShowBVHNode(viewer, bvh_curve.bvh_aabb_node);
+    */
+
+    /*
+     double u = 0.5;
+     std::vector<double> basis = tinynurbs::bsplineBasis(crv.degree, tinynurbs::findSpan(crv.degree, crv.knots, u), crv.knots, u);
+     for (auto it : basis)
+     {
+         std::cout << it << std::endl;
+     }
+     */
 
     viewer.launch();
 }

src/newton.cpp

@@ -1,8 +1,7 @@
-#include "newton.hpp"
+#include "mathdef.hpp"
+/*
 
 // 默认id参数不用传，表示四个变量四个方程，id=1 or 2 的时候是2x2的方程组， id=3时是6x6的方程组, id=4 (x0,x1,x2... xn-1) 表示的方程组
-
-/*
 vector<numeric> newton(const MUL_F &F, const vector<numeric> &init_point, const numeric &eps, bool &isConvergence, int id)
 {
     vector<symbol> symbols = {get_symbol("u"), get_symbol("v"), get_symbol("s"), get_symbol("t")};