From f9812559e766a409abfbd2d3bae519298339ab65 Mon Sep 17 00:00:00 2001
From: Alex Schmidt <alex@treefish.org>
Date: Tue, 19 Feb 2013 17:07:19 +0100
Subject: [PATCH] ...

---
 culooks.cpp         |  57 ++++++++++++++++++---
 culooks.h           |  36 ++++++++++++--
 culooks_cube.cpp    | 117 +++++++++++++++++++++++++++++++++++++++++---
 culooks_drawing.cpp |  40 ++++++++++-----
 4 files changed, 220 insertions(+), 30 deletions(-)

diff --git a/culooks.cpp b/culooks.cpp
index d189c86..a1f386f 100644
--- a/culooks.cpp
+++ b/culooks.cpp
@@ -1,7 +1,6 @@
 #include "culooks.h"
 
 #include <vector>
-#include <GL/glut.h>
 
 #include <iostream>
 #include <math.h>
@@ -18,11 +17,6 @@ culooks::culooks (const char* name, const int& xcubes, const int& ycubes, const
   window *Win = new window;
   int winsize[2];
 
-  if (windowid == 0) {
-    glutInit(argc, argv);
-    glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB|GLUT_DEPTH);
-  }
-
   Win->layout[0] = xcubes;
   Win->layout[1] = ycubes;
   Win->aspect = (double)xcubes/ycubes;
@@ -50,11 +44,58 @@ culooks::culooks (const char* name, const int& xcubes, const int& ycubes, const
   Windows.push_back( pair<int,culooks::window*>(0, Win) );
   
   if (windowid == 0) {
-    glXMakeCurrent(0,0,0);
-    pthread_create(&glThreadId, 0, &drawing::glutThread, NULL);
+    comarg comArg;
+    comArg.argc = argc;
+    comArg.argv = argv;
+    pthread_create(&glThreadId, 0, &drawing::glutThread, &comArg);
   }
 
   mywid = windowid;
   windowid++;
 }
 
+void culooks::setLink (const int& cubeid, const int& posdir,
+		       const float& red, const float& green, const float& blue, const float& alpha)
+{
+  Windows[mywid].second->cubes[cubeid].setLink(posdir, red, green, blue, alpha);
+}
+
+void culooks::setPlaq (const int& cubeid, const int& posdir,
+		       const float& red, const float& green, const float& blue, const float& alpha)
+{
+  Windows[mywid].second->cubes[cubeid].setPlaq(posdir, red, green, blue, alpha);
+}
+
+void culooks::swapBuffers () {
+  for (int icube=0; icube<Windows[mywid].second->cubes.size(); icube++) {
+    Windows[mywid].second->cubes[icube].swapLinkBuffer();
+    Windows[mywid].second->cubes[icube].swapPlaqBuffer();
+  }
+  Windows[mywid].second->redisplay = true;
+}
+
+void culooks::hidePlaqs (const int& cubeid) {
+  Windows[mywid].second->cubes[cubeid].hidePlaqs();
+}
+
+void culooks::hidePlaqs () {
+  for (int icube=0; icube<Windows[mywid].second->cubes.size(); icube++)
+    Windows[mywid].second->cubes[icube].hidePlaqs();
+}
+
+void culooks::hideLinks (const int& cubeid) {
+  Windows[mywid].second->cubes[cubeid].hideLinks();
+}
+
+void culooks::hideLinks () {
+  for (int icube=0; icube<Windows[mywid].second->cubes.size(); icube++)
+    Windows[mywid].second->cubes[icube].hideLinks();
+}
+
+void culooks::setBgColor(const float& red, const float& green, const float& blue, const float& alpha)
+{
+  Windows[mywid].second->bgcolor[0] = red;
+  Windows[mywid].second->bgcolor[1] = green;
+  Windows[mywid].second->bgcolor[2] = blue;
+  Windows[mywid].second->bgcolor[3] = alpha;
+}
diff --git a/culooks.h b/culooks.h
index 76f0919..fe6ca11 100644
--- a/culooks.h
+++ b/culooks.h
@@ -17,23 +17,51 @@ class culooks
  public:
   
   culooks (const char* name, const int& xcubes, const int& ycubes, const int& l, int *argc, char **argv);
+  void setLink (const int& cubeid, const int& posdir,
+		const float& red, const float& green, const float& blue, const float& alpha);
+  void setPlaq (const int& cubeid, const int& posdir,
+		const float& red, const float& green, const float& blue, const float& alpha);
+  void swapBuffers();
+  void hidePlaqs(const int& cubeid);
+  void hidePlaqs();
+  void hideLinks(const int& cubeid);
+  void hideLinks();
+  void setBgColor(const float& red, const float& green, const float& blue, const float& alpha);
 
  private:
+
+  struct comarg {
+    int *argc;
+    char **argv;
+  };
   
   class cube {
   public:
-    cube(int l);
+    cube (int l);
     void draw();
     int id;
     float az, alt;
     float zoom;
+    void setLink (const int& posdir, 
+		  const float& red, const float& green, const float& blue, const float& alpha);
+    void setPlaq (const int& posdir, 
+		  const float& red, const float& green, const float& blue, const float& alpha);
+    void swapLinkBuffer();
+    void swapPlaqBuffer();
+    void hidePlaqs();
+    void hideLinks();
   private:
     void drawAll();
     void drawBox();
-    static int allid;
+    static void drawFrame();
     float *plaq;
     float *link;
+    float *plaqbuf[2];
+    float *linkbuf[2];
     int l;
+    int plaqbuf_active;
+    int linkbuf_active;
+    static int allid;
   };
   
   struct window {
@@ -44,6 +72,8 @@ class culooks
     int gwinid;
     bool initialized;
     string name;
+    float bgcolor[4];
+    bool redisplay;
   };
 
   class drawing 
@@ -57,7 +87,7 @@ class culooks
     static void reshapeFunc(int w, int h);
     static void displayFunc();
     static void initWindow(int winid);
-    static void idleFunc_master();
+    static void idleFunc();
   public:
     static void* glutThread(void *leer);
   };
diff --git a/culooks_cube.cpp b/culooks_cube.cpp
index 29976e4..a1d0744 100644
--- a/culooks_cube.cpp
+++ b/culooks_cube.cpp
@@ -4,17 +4,73 @@
 
 int culooks::cube::allid = 0;
 
+void culooks::cube::setLink (const int& posdir,
+			     const float& red, const float& green, const float& blue, const float& alpha) {
+  linkbuf[(linkbuf_active+1)%2][ posdir*4 ] = red;
+  linkbuf[(linkbuf_active+1)%2][ posdir*4 + 1 ] = green;
+  linkbuf[(linkbuf_active+1)%2][ posdir*4 + 2 ] = blue;
+  linkbuf[(linkbuf_active+1)%2][ posdir*4 + 3 ] = alpha;
+}
+
+void culooks::cube::setPlaq (const int& posdir,
+			     const float& red, const float& green, const float& blue, const float& alpha) {
+  plaqbuf[(plaqbuf_active+1)%2][ posdir*4 ] = red;
+  plaqbuf[(plaqbuf_active+1)%2][ posdir*4 + 1 ] = green;
+  plaqbuf[(plaqbuf_active+1)%2][ posdir*4 + 2 ] = blue;
+  plaqbuf[(plaqbuf_active+1)%2][ posdir*4 + 3 ] = alpha;
+}
+
+void culooks::cube::hidePlaqs()
+{
+  for (int ibuf=0; ibuf<2; ibuf++)
+    for (int i=0; i<l*l*l*3; i++) {
+      plaqbuf[ibuf][i*4+0]=0; 
+      plaqbuf[ibuf][i*4+1]=0;
+      plaqbuf[ibuf][i*4+2]=0; 
+      plaqbuf[ibuf][i*4+3]=0;
+    }
+}
+
+void culooks::cube::hideLinks()
+{
+  for (int ibuf=0; ibuf<2; ibuf++)
+    for (int i=0; i<l*l*l*3; i++) {
+      linkbuf[ibuf][i*4+0]=0; 
+      linkbuf[ibuf][i*4+1]=0;
+      linkbuf[ibuf][i*4+2]=0; 
+      linkbuf[ibuf][i*4+3]=0;
+    }
+}
+
+void culooks::cube::swapLinkBuffer()
+{
+  linkbuf_active = (linkbuf_active+1)%2;
+  link = linkbuf[linkbuf_active];
+}
+
+void culooks::cube::swapPlaqBuffer()
+{
+  plaqbuf_active = (plaqbuf_active+1)%2;
+  plaq = plaqbuf[plaqbuf_active];
+}
+
 void culooks::cube::draw()
 {
   glMatrixMode(GL_MODELVIEW);
-  glPushMatrix();
 
+  glPushMatrix();
   glScalef(zoom, zoom, zoom);
   glRotatef(az, 0, 1, 0);
   glRotatef(alt, 1, 0, 0);
-
   drawAll();
+  glPopMatrix();
 
+  /* draw frame */
+  glPushMatrix();
+  glScalef(zoom*1.01, zoom*1.01, zoom*1.01);
+  glRotatef(az, 0, 1, 0);
+  glRotatef(alt, 1, 0, 0);
+  drawFrame();
   glPopMatrix();
 }
 
@@ -82,16 +138,61 @@ void culooks::cube::drawAll()
 culooks::cube::cube(int _l)
 {
   l = _l;
-  link = new float[l*l*l*3 * 4];
-  plaq = new float[l*l*l*3 * 4];
+  plaqbuf[0] = new float[l*l*l*3 * 4];
+  plaqbuf[1] = new float[l*l*l*3 * 4];
+  linkbuf[0] = new float[l*l*l*3 * 4];
+  linkbuf[1] = new float[l*l*l*3 * 4];
+  
+  linkbuf_active = 0;
+  plaqbuf_active = 0;
+
+  link = linkbuf[0];
+  plaq = plaqbuf[0];
   az = 30;
   alt = -20;
   zoom = 0.6;
   id = allid;
   allid++;
 
-  for (int i=0; i<l*l*l*3; i++) {
-    link[i*4+0]=1; link[i*4+3]=0.6;
-    plaq[i*4+1]=1; plaq[i*4+3]=0.2;
-  }
+  for (int ibuf=0; ibuf<2; ibuf++)
+    for (int i=0; i<l*l*l*3; i++) {
+      linkbuf[ibuf][i*4+0]=1; linkbuf[ibuf][i*4+3]=0.6;
+      plaqbuf[ibuf][i*4+1]=1; plaqbuf[ibuf][i*4+3]=0.2;
+    }
+}
+
+void culooks::cube::drawFrame()
+{
+  glBegin(GL_LINES);
+
+  glColor4f(0, 0, 0, 1);
+
+  glVertex3f(-1.0f, 1.0f, -1.0f);	
+  glVertex3f( 1.0f, 1.0f, -1.0f);
+  glVertex3f(-1.0f, -1.0f, -1.0f);	
+  glVertex3f( 1.0f, -1.0f, -1.0f);
+  glVertex3f(-1.0f, 1.0f, 1.0f);	
+  glVertex3f( 1.0f, 1.0f, 1.0f);
+  glVertex3f(-1.0f, -1.0f, 1.0f);	
+  glVertex3f( 1.0f, -1.0f, 1.0f);
+
+  glVertex3f( 1.0f, 1.0f, -1.0f);
+  glVertex3f( 1.0f, -1.0f, -1.0f);
+  glVertex3f( -1.0f, 1.0f, -1.0f);
+  glVertex3f( -1.0f, -1.0f, -1.0f);
+  glVertex3f( 1.0f, 1.0f, 1.0f);
+  glVertex3f( 1.0f, -1.0f, 1.0f);
+  glVertex3f( -1.0f, 1.0f, 1.0f);
+  glVertex3f( -1.0f, -1.0f, 1.0f);
+
+  glVertex3f( -1.0f, -1.0f, 1.0f);
+  glVertex3f( -1.0f, -1.0f, -1.0f);
+  glVertex3f( -1.0f, 1.0f, 1.0f);
+  glVertex3f( -1.0f, 1.0f, -1.0f);
+  glVertex3f( 1.0f, -1.0f, 1.0f);
+  glVertex3f( 1.0f, -1.0f, -1.0f);
+  glVertex3f( 1.0f, 1.0f, 1.0f);
+  glVertex3f( 1.0f, 1.0f, -1.0f);
+
+  glEnd();
 }
diff --git a/culooks_drawing.cpp b/culooks_drawing.cpp
index fb5773c..61dc30a 100644
--- a/culooks_drawing.cpp
+++ b/culooks_drawing.cpp
@@ -93,8 +93,8 @@ void culooks::drawing::reshapeFunc(int w, int h)
 void culooks::drawing::displayFunc()
 {
   culooks::window *Win = getWin();
-    
-  glClearColor(0,0,0,0);
+   
+  glClearColor(Win->bgcolor[0], Win->bgcolor[1], Win->bgcolor[2], Win->bgcolor[3]);
   glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
     
   glMatrixMode(GL_MODELVIEW);
@@ -118,33 +118,51 @@ void culooks::drawing::displayFunc()
  
 void culooks::drawing::initWindow(int winid)
 {
+  
+  glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB|GLUT_DEPTH);
   glutInitWindowSize(culooks::Windows[winid].second->w, culooks::Windows[winid].second->h);
   glutInitWindowPosition(winid*100,winid*100);
   glutCreateWindow( ("culooks / " + culooks::Windows[winid].second->name).c_str() );
-    
+
+  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+  glEnable(GL_BLEND);
+  glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);	
+  glHint(GL_POINT_SMOOTH_HINT, GL_NICEST);	
+  glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);
+
   glutDisplayFunc(&drawing::displayFunc);
   glutReshapeFunc(&drawing::reshapeFunc);
   glutMotionFunc(&drawing::motionFunc);
   glutMouseFunc(&drawing::mouseFunc);
-
-  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); 
-  glEnable( GL_BLEND );
+  glutIdleFunc(&drawing::idleFunc);
 
   culooks::Windows[winid].first = glutGetWindow();
-
   culooks::Windows[winid].second->initialized = true;
+  culooks::Windows[winid].second->redisplay = true;
 }
 
-void culooks::drawing::idleFunc_master()
+void culooks::drawing::idleFunc()
 {
-  for (int iwin=0; iwin < culooks::Windows.size(); iwin++)
+  int activeWindow = glutGetWindow();
+
+  for (int iwin=0; iwin < culooks::Windows.size(); iwin++) {
     if (!culooks::Windows[iwin].second->initialized)
       initWindow(iwin);
+    if (culooks::Windows[iwin].second->redisplay) {
+      glutSetWindow(culooks::Windows[iwin].first);
+      glutPostRedisplay();
+      culooks::Windows[iwin].second->redisplay = false;
+    }
+  }
+
+  glutSetWindow(activeWindow);
 }
 
-void* culooks::drawing::glutThread(void *leer)
+void* culooks::drawing::glutThread(void *_comArg)
 {
+  comarg *comArg = (comarg*)_comArg;
+
+  glutInit(comArg->argc, comArg->argv);
   initWindow(0);
-  glutIdleFunc(&idleFunc_master);
   glutMainLoop();
 }
-- 
2.39.5