initial upload

archive/msh2obj/oldfiles/GMT_colorPattern.mtl

@@ -0,0 +1,44 @@
+# newmtl [name] 材质名称
+# Ns [0~1000] 反射高光度 值越高则高光越密集
+# Ni [0.001~10] 折射值 若取值为1.0 光在通过物体的时候不发生弯曲 玻璃的折射率为1.5
+# Ka [0~1] [0~1] [0~1] 材质的环境光 阴影色(ambient color)
+# Kd [0~1] [0~1] [0~1] 散射光 固有色(diffuse color)
+# Ks [0~1] [0~1] [0~1] 镜面光 高光色(specular color)
+# d [0~1] 渐隐指数描述 参数factor表示物体融入背景的数量 取值范围为0.0~1.0 取值为1.0表示完全不透明 取值为0.0时表示完全透明
+# illum 1
+# map_Ka [pic-file]
+# map_Kd [pic-file]
+# map_Ks [pic-file]
+
+newmtl seis
+Ns 96.078431
+Ni 1.000000
+Ka 0.100000 0.100000 0.100000
+Kd 0.640000 0.640000 0.640000
+Ks 0.000000 0.000000 0.000000
+d 1.0
+illum 1
+map_Ka GMT_seis.png
+map_Kd GMT_seis.png
+
+newmtl rainbow
+Ns 96.078431
+Ni 1.000000
+Ka 0.100000 0.100000 0.100000
+Kd 0.640000 0.640000 0.640000
+Ks 0.000000 0.000000 0.000000
+d 1.0
+illum 1
+map_Ka GMT_rainbow.png
+map_Kd GMT_rainbow.png
+
+newmtl arctic
+Ns 96.078431
+Ni 1.000000
+Ka 0.100000 0.100000 0.100000
+Kd 0.640000 0.640000 0.640000
+Ks 0.000000 0.000000 0.000000
+d 1.0
+illum 1
+map_Ka arctic.png
+map_Kd arctic.png

archive/msh2obj/oldfiles/msh2obj.cpp

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+#include "iostream"
+#include "fstream"
+#include "sstream"
+#include "iomanip"
+#include "string.h"
+#include "cmath"
+#include "vector"
+
+#define ZERO 1e-20
+#define Pi (4.0*atan(1.0))
+
+using namespace std;
+
+struct point{
+	double x,y,z;
+};
+typedef vector<point> pointArray;
+
+struct spoint
+{
+	double lon,lat,rad;
+};
+typedef vector<spoint> spointArray;
+
+struct vertex : public point{
+	int id;
+	double attri;
+};
+typedef vector<vertex> vertexArray;
+
+struct face{
+	int id;
+	int vec[3] = {-1,-1,-1};
+	point outNor;
+};
+typedef vector<face> faceArray;
+
+point normal(point a){
+	point out = a;
+	double module = sqrt(a.x*a.x+a.y*a.y+a.z*a.z);
+	out.x /= module; out.y /= module; out.z /= module;
+	return out;
+}
+
+point operator -(point a,point b){
+	point out;
+	out.x = a.x - b.x;
+	out.y = a.y - b.y;
+	out.z = a.z - b.z;
+	return out;
+}
+
+point operator -(vertex a,vertex b){
+	point out;
+	out.x = a.x - b.x;
+	out.y = a.y - b.y;
+	out.z = a.z - b.z;
+	return out;
+}
+
+point cross(point a,point b){
+	point out;
+	out.x = a.y*b.z-a.z*b.y;
+	out.y = a.z*b.x-a.x*b.z;
+	out.z = a.x*b.y-a.y*b.x;
+	return out;
+}
+
+spoint c2s(vertex c)
+{
+	spoint s;
+	s.rad = sqrt(c.x*c.x+c.y*c.y+c.z*c.z);
+	if (fabs(s.rad)<ZERO) //点距离原点极近 将点置于原点
+	{
+		s.lat = s.lon = s.rad = 0.0;
+	}
+	else
+	{
+		s.lat = 90.0 - acos(c.z/s.rad)*180.0/Pi;
+		s.lon = atan2(c.y,c.x)*180.0/Pi;
+	}
+	return s;
+}
+
+int main(int argc, char const *argv[]){
+	vertex node;
+	face triangle;
+	vertexArray nodes;
+	faceArray triangles;
+
+	int temp_int,temp_int2;
+	string temp_str;
+	stringstream temp_ss;
+
+	double attriMax = -1e+30;
+	double attriMin = 1e+30;
+	ifstream mshin("input2.msh");
+	while(getline(mshin,temp_str)){
+		if (!strcmp(temp_str.c_str(),"$Nodes")){
+			getline(mshin,temp_str);
+			temp_ss.str(""); temp_ss.clear(); temp_ss.str(temp_str);
+			temp_ss >> temp_int;
+			for (int i = 0; i < temp_int; i++){
+				getline(mshin,temp_str);
+				temp_ss.str(""); temp_ss.clear(); temp_ss.str(temp_str);
+				temp_ss >> node.id >> node.x >> node.y >> node.z;
+				nodes.push_back(node);
+			}
+		}
+		else if (!strcmp(temp_str.c_str(),"$Elements")){
+			getline(mshin,temp_str);
+			temp_ss.str(""); temp_ss.clear(); temp_ss.str(temp_str);
+			temp_ss >> temp_int;
+			for (int i = 0; i < temp_int; i++){
+				getline(mshin,temp_str);
+				temp_ss.str(""); temp_ss.clear(); temp_ss.str(temp_str);
+				temp_ss >> triangle.id >> temp_int2 >> temp_int2 >> temp_int2 
+				>> triangle.vec[0] >> triangle.vec[1] >> triangle.vec[2];
+				//triangle.vec[0] += 1; triangle.vec[1] += 1; triangle.vec[2] += 1;
+				triangle.id += 1;
+				triangles.push_back(triangle);
+			}
+		}
+		else if (!strcmp(temp_str.c_str(),"$NodeData")){
+			for (int i = 0; i < 8; i++)
+				getline(mshin,temp_str);
+			temp_ss.str(""); temp_ss.clear(); temp_ss.str(temp_str);
+			temp_ss >> temp_int;
+			for (int i = 0; i < temp_int; i++){
+				getline(mshin,temp_str);
+				temp_ss.str(""); temp_ss.clear(); temp_ss.str(temp_str);
+				temp_ss >> temp_int2 >> nodes[i].attri;
+				if(nodes[i].attri > attriMax) attriMax = nodes[i].attri;
+				if(nodes[i].attri < attriMin) attriMin = nodes[i].attri;
+			}
+		}
+		else continue;
+	}
+	mshin.close();
+
+	for (int i = 0; i < nodes.size(); i++)
+		nodes[i].attri = (nodes[i].attri - attriMin)/(attriMax - attriMin);
+
+	for (int i = 0; i < triangles.size(); i++){
+		triangles[i].outNor = normal(cross(nodes[triangles[i].vec[1]-1]-nodes[triangles[i].vec[0]-1],
+			nodes[triangles[i].vec[2]-1]-nodes[triangles[i].vec[0]-1]));
+	}
+
+	ofstream objout("sphere.obj");
+	objout << "mtllib global_topography.mtl" << endl << "o sphere" << endl;
+	for (int i = 0; i < nodes.size(); i++){
+		objout << "v " << setprecision(16) << nodes[i].x << " " << nodes[i].y << " " << nodes[i].z << endl;
+	}
+	for (int i = 0; i < nodes.size(); i++){
+		objout << "vt " << setprecision(16) << nodes[i].attri << " 0.5" << endl;
+	}
+	for (int i = 0; i < triangles.size(); i++){
+		objout << "vn " << setprecision(16) << triangles[i].outNor.x << " " << triangles[i].outNor.y << " " << triangles[i].outNor.z << endl;
+	}
+	objout << "usemtl earth-topo" << endl << "g model1" << endl << "s 1" << endl;
+	for (int i = 0; i < triangles.size(); i++){
+		objout << "f " << triangles[i].vec[0] << "/" << triangles[i].vec[0] << "/" << i+1 << " "
+		 << triangles[i].vec[1] << "/" << triangles[i].vec[1] << "/" << i+1 << " "
+		 << triangles[i].vec[2] << "/" << triangles[i].vec[2] << "/" << i+1 << endl;
+	}
+	objout.close();
+	return 0;
+}