From: Alex Schmidt <alex@treefish.org>
Date: Thu, 20 Dec 2012 18:29:36 +0000 (+0100)
Subject: ...
X-Git-Url: http://git.treefish.org/~alex/phys/latlib.git/commitdiff_plain/2f7d03857df74cf9edb56fbc1984152a38530ff9

...
---

diff --git a/cubelooks.cpp b/cubelooks.cpp
index 6584383..f6b02ef 100644
--- a/cubelooks.cpp
+++ b/cubelooks.cpp
@@ -1,12 +1,15 @@
 #include "cubelooks.h"
-#include <GL/glut.h>
 #include <iostream>
 #include <string>
 #include <math.h>
 
 using namespace std;
 
-cubelooks::env *Env;
+vector< pair <unsigned long int,cubelooks::env*> > Envs;
+
+bool cubelooks::initDone = false;
+GLXDrawable cubelooks::gDrawable;
+Display *cubelooks::gDisplay;
 
 int cubelooks::cube::allid = 0;
 
@@ -132,8 +135,20 @@ namespace mygl
 {
   int rotcube[3];
 
+  cubelooks::env* getEnv()
+  {
+    for (int ienv=0; ienv<Envs.size(); ienv++)
+      if ( Envs.at(ienv).first == pthread_self() ) {
+	return Envs.at(ienv).second;
+      }
+    cerr << "Something terrible happened: Could not find env-thread-id!" << endl;
+    exit(1);
+  }
+
   static int getCubeFromPos(int x, int y)
   {
+    cubelooks::env *Env = getEnv();
+
     int col = x / ((float)Env->w / Env->layout[0]);
     int row = Env->layout[1] - y / ((float)Env->h / Env->layout[1]);
 
@@ -147,6 +162,8 @@ namespace mygl
 
   static void motionFunc(int x, int y)
   {   
+    cubelooks::env *Env = getEnv();
+
     Env->cubes.at(rotcube[0]).az += rotcube[1] - x;
     Env->cubes.at(rotcube[0]).alt += rotcube[2] - y;
 
@@ -158,6 +175,8 @@ namespace mygl
 
   static void mouseFunc(int button, int state, int x, int y)
   {
+    cubelooks::env *Env = getEnv();
+
     if (button == 0) {
       rotcube[0] = getCubeFromPos(x,y);
       rotcube[1] = x;
@@ -176,6 +195,8 @@ namespace mygl
 
   static void reshapeFunc(int w, int h)
   {
+    cubelooks::env *Env = getEnv();
+
     int neww;
     int newh;
 
@@ -201,6 +222,8 @@ namespace mygl
 
   static void displayFunc()
   {
+    cubelooks::env *Env = getEnv();
+
     glClearColor(0,0,0,0);
     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
  
@@ -227,28 +250,17 @@ namespace mygl
 
   static void* glutThread(void *_Env)
   {
-    int winsize[2];
+    cubelooks::env *Env = (cubelooks::env *)_Env; 
 
-    glutInit( ((cubelooks::env*)Env)->argc, ((cubelooks::env*)Env)->argv );
-    glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB|GLUT_DEPTH);
-
-    if( Env->layout[0] >= Env->layout[1] ) {
-      winsize[0] = 640;
-      winsize[1] = (640.0/Env->layout[0])*Env->layout[1];
-    }
-    else {
-      winsize[1] = 640;
-      winsize[0] = (640.0/Env->layout[1])*Env->layout[0];
-    }
+    //glXMakeCurrent(0, glutCreateWindow("cubelooks"));
 
-    Env->w = winsize[0];
-    Env->h = winsize[1];
+    //glXCrateContext(0, 
 
-    glutInitWindowSize(winsize[0], winsize[1]);
+    //cout << Env->layout[1] << endl;
 
-    glutInitWindowPosition(0,0);
+    glXMakeCurrent( Env->gDisplay, Env->gDrawable, Env->gContext );
 
-    glutCreateWindow("cubelooks");
+    //cout << "da" << endl;
 
     glutDisplayFunc(&displayFunc);
     glutReshapeFunc(&reshapeFunc);
@@ -259,6 +271,8 @@ namespace mygl
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); 
     glEnable( GL_BLEND );
 
+    Envs.push_back( pair<unsigned long int,cubelooks::env*>(pthread_self(), Env) );
+
     glutMainLoop();
   }
 };
@@ -282,19 +296,52 @@ cubelooks::cube::cube(int _l)
 
 cubelooks::cubelooks(const int& xcubes, const int& ycubes, const int& l, int *argc, char **argv)
 {
-  _Env.argc = argc;
-  _Env.argv = argv;
-  _Env.layout[0] = xcubes;
-  _Env.layout[1] = ycubes;
-  _Env.aspect = (double)xcubes/ycubes;
+  int winsize[2];
+  GLXContext context;
+  env *Env = new env;
+
+  Env->argc = argc;
+  Env->argv = argv;
+  Env->layout[0] = xcubes;
+  Env->layout[1] = ycubes;
+  Env->aspect = (double)xcubes/ycubes;
   for (int icube=0; icube<xcubes*ycubes; icube++) {
     cube newCube(l);
-    _Env.cubes.push_back(newCube);
+    Env->cubes.push_back(newCube);
+  }
+
+  if ( !initDone ) {
+    glutInit( Env->argc, Env->argv );
+    glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB|GLUT_DEPTH);
+  }
+    
+  if( Env->layout[0] >= Env->layout[1] ) {
+    winsize[0] = 640;
+    winsize[1] = (640.0/Env->layout[0])*Env->layout[1];
+  }
+  else {
+    winsize[1] = 640;
+    winsize[0] = (640.0/Env->layout[1])*Env->layout[0];
+  }
+
+  Env->w = winsize[0];
+  Env->h = winsize[1];
+
+  glutInitWindowSize(winsize[0], winsize[1]);
+  glutInitWindowPosition(0,0);
+  glutCreateWindow("cubelooks");
+
+  if ( !initDone ) {
+    gDisplay = glXGetCurrentDisplay();
+    gDrawable = glXGetCurrentDrawable();
+    initDone = true;
   }
 
-  Env = &_Env;
+  Env->gContext = glXGetCurrentContext();
+  Env->gDisplay = gDisplay;
+  Env->gDrawable = glXGetCurrentDrawable();
 
-  pthread_create(&glThreadId, 0, &mygl::glutThread, NULL);
+  glXMakeCurrent(0,0,0);
 
-  sleep(2);
+  pthread_create(&glThreadId, 0, &mygl::glutThread, Env);
 }
diff --git a/cubelooks.h b/cubelooks.h
index 6a404a7..4d75332 100644
--- a/cubelooks.h
+++ b/cubelooks.h
@@ -3,6 +3,12 @@
 
 #include <pthread.h>
 #include <vector>
+#include <GL/glut.h>
+#include <GL/glx.h>
+#include <GL/gl.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
 
 using namespace std;
 
@@ -32,13 +38,18 @@ class cubelooks
     double aspect;
     vector<cube> cubes;
     int w, h;
+    GLXDrawable gDrawable;
+    Display *gDisplay;
+    GLXContext gContext;
   };
 
   cubelooks(const int& xcubes, const int& ycubes, const int& l, int *argc, char **argv);
 
  private:
   pthread_t glThreadId;
-  env _Env;
+  static bool initDone;
+  static GLXDrawable gDrawable;
+  static Display *gDisplay;
 };
 
 #endif
diff --git a/cubelooks_test.cpp b/cubelooks_test.cpp
index b8880c0..fc6e3f8 100644
--- a/cubelooks_test.cpp
+++ b/cubelooks_test.cpp
@@ -9,6 +9,10 @@ int main(int argc, char **argv)
 
   cubelooks clooks(2,1, 6, &argc, argv);
 
+  //sleep(2);
+
+  //cubelooks clooks2(2,1, 6, &argc, argv);
+
   while(true) {
     sleep(1);
   }