Changeset 448 for trunk/gui/vizservers/nanovis

Timestamp:

May 30, 2006 8:06:30 AM (18 years ago)

Author:

qiaow

Message:

Added label drawing on each axis.
Each volume has three labels, one for each axis.

Location:

trunk/gui/vizservers/nanovis

Files:

• Volume.cpp (modified) (2 diffs)
• Volume.h (modified) (2 diffs)
• VolumeRenderer.cpp (modified) (3 diffs)
• VolumeRenderer.h (modified) (2 diffs)
• font (added)
• font/Font.bmp (added)
• nanovis.cpp (modified) (11 diffs)

trunk/gui/vizservers/nanovis/Volume.cpp

@@ -53 +53 @@
   plane.push_back(CutPlane(3, 0.5));
   
+  //initialize the labels  
+  strcpy(label[0], "X Label");
+  strcpy(label[1], "Y Label");
+  strcpy(label[2], "Z Label");
 }
 
@@ -130 +134 @@
     outline_color.GetRGB(rgb);
 }
+
+void Volume::set_label(int axis, char* txt){
+  strcpy(label[axis], txt);
+}       

trunk/gui/vizservers/nanovis/Volume.h

@@ -54 +54 @@
         bool outline_enabled;   // show/hide outline around volume
         Color outline_color;    // color for outline around volume
+
 
 public:
@@ -117 +118 @@
         void set_outline_color(float* rgb);
         void get_outline_color(float* rgb);
+
+
+        void set_label(int axis, char* txt);    //change the label displayed on an axis
+        char label[3][50];      // the labels along each axis 0:x , 1:y, 2:z
 };
 

trunk/gui/vizservers/nanovis/VolumeRenderer.cpp

@@ -27 +27 @@
 
   init_shaders();
+  init_font("./font/Font.bmp");
 }
 
@@ -163 +164 @@
             (double)olcolor[0], (double)olcolor[1], (double)olcolor[2],
             1.5);
+
+        draw_label(i);
     }
     glPopMatrix();
@@ -726 +729 @@
   volume[index]->disable();
 }
+
+
+void VolumeRenderer::init_font(char* filename) {
+
+    FILE *file;
+    unsigned short int bfType;
+    long int bfOffBits;
+    short int biPlanes;
+    short int biBitCount;
+    long int biSizeImage;
+    int width, height;
+    int i;
+    unsigned char temp;
+
+
+    /* make sure the file is there and open it read-only (binary) */
+    if ((file = fopen(filename, "rb")) == NULL)
+    {
+      assert(false);
+    }
+    
+    if(!fread(&bfType, sizeof(short int), 1, file))
+    {
+      assert(false);
+      //printf("Error reading file!\n");
+    }
+    
+    /* check if file is a bitmap */
+    if (bfType != 19778)
+    {
+      assert(false);
+      //printf("Not a Bitmap-File!\n");
+    }
+    
+    /* get the file size */
+    /* skip file size and reserved fields of bitmap file header */
+    fseek(file, 8, SEEK_CUR);
+    
+    /* get the position of the actual bitmap data */
+    if (!fread(&bfOffBits, sizeof(long int), 1, file))
+    {
+      assert(false);
+      //printf("Error reading file!\n");
+    }
+    //printf("Data at Offset: %ld\n", bfOffBits);
+    
+    /* skip size of bitmap info header */
+    fseek(file, 4, SEEK_CUR);
+    
+    /* get the width of the bitmap */
+    fread(&width, sizeof(int), 1, file);
+    //printf("Width of Bitmap: %d\n", texture->width);
+    
+    /* get the height of the bitmap */
+    fread(&height, sizeof(int), 1, file);
+    //printf("Height of Bitmap: %d\n", texture->height);
+    
+    /* get the number of planes (must be set to 1) */
+    fread(&biPlanes, sizeof(short int), 1, file);
+    if (biPlanes != 1)
+    {
+      assert(false);
+      //printf("Error: number of Planes not 1!\n");
+    }
+    
+    /* get the number of bits per pixel */
+    if (!fread(&biBitCount, sizeof(short int), 1, file))
+    {
+      assert(false);
+      //printf("Error reading file!\n");
+      //return 0;
+    }
+    
+    //printf("Bits per Pixel: %d\n", biBitCount);
+    if (biBitCount != 24)
+    {
+      assert(false);
+      //printf("Bits per Pixel not 24\n");
+      //return 0;
+    }
+
+
+    /* calculate the size of the image in bytes */
+    biSizeImage = width * height * 3 * sizeof(unsigned char);
+    unsigned char* data = (unsigned char*) malloc(biSizeImage);
+
+
+    /* seek to the actual data */
+    fseek(file, bfOffBits, SEEK_SET);
+    if (!fread(data, biSizeImage, 1, file))
+    {
+       assert(false);
+       //printf("Error loading file!\n");
+    }
+
+    /* swap red and blue (bgr -> rgb) */
+    for (i = 0; i < biSizeImage; i += 3)
+    {
+       temp = data[i];
+       data[i] = data[i + 2];
+       data[i + 2] = temp;
+    }
+
+
+    //create opengl texture 
+    glGenTextures(1, &font_texture);
+    glBindTexture(GL_TEXTURE_2D, font_texture);
+    glTexImage2D(GL_TEXTURE_2D, 0, 3, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+
+    build_font();
+    assert(glGetError()==0);
+
+    free(data);
+}
+
+
+
+void VolumeRenderer::draw_label(int volume_index){
+
+  Volume* vol = volume[volume_index];
+ 
+  glEnable(GL_TEXTURE_2D);
+  glEnable(GL_BLEND);
+
+  //x
+  glPushMatrix();
+    glTranslatef(0., -0.2, 1.);
+    glColor3f(1.f, 1.0f, 1.0f);
+
+    glPushMatrix();
+      glScalef(1./volume[volume_index]->aspect_ratio_width, 
+          1./volume[volume_index]->aspect_ratio_height, 
+          1./volume[volume_index]->aspect_ratio_depth);
+      glPrint(vol->label[0], 0);
+    glPopMatrix();
+  glPopMatrix();
+
+  //y
+  glPushMatrix();
+    glTranslatef(-0.02, 0., 1.);
+
+    glPushMatrix();
+      glScalef(1./volume[volume_index]->aspect_ratio_width, 
+          1./volume[volume_index]->aspect_ratio_height, 
+          1./volume[volume_index]->aspect_ratio_depth);
+      glRotatef(90., 0., 0., 1.);
+      glColor3f(1.f, 1.0f, 1.0f);
+      glPrint(vol->label[1], 0);
+    glPopMatrix();
+  glPopMatrix();
+
+  //z
+  glPushMatrix();
+    glTranslatef(1., -0.2, 1.);
+
+    glPushMatrix();
+      glScalef(1./volume[volume_index]->aspect_ratio_width, 
+          1./volume[volume_index]->aspect_ratio_height, 
+          1./volume[volume_index]->aspect_ratio_depth);
+      glRotatef(90., 0., 1., 0.);
+      glColor3f(1.f, 1.0f, 1.0f);
+      glPrint(vol->label[2], 0);
+    glPopMatrix();
+  glPopMatrix();
+
+  glDisable(GL_TEXTURE_2D);
+}
+
+
+
+void VolumeRenderer::build_font() {
+
+    GLfloat cx, cy;         /* the character coordinates in our texture */
+    font_base = glGenLists(256);
+    glBindTexture(GL_TEXTURE_2D, font_texture);
+    for (int loop = 0; loop < 256; loop++)
+    {
+        cx = (float) (loop % 16) / 16.0f;
+        cy = (float) (loop / 16) / 16.0f;
+        glNewList(font_base + loop, GL_COMPILE);
+            glBegin(GL_QUADS);
+                glTexCoord2f(cx, 1 - cy - 0.0625f);
+                glVertex3f(0, 0, 0);
+                glTexCoord2f(cx + 0.0625f, 1 - cy - 0.0625f);
+                glVertex3f(0.04, 0, 0);
+                glTexCoord2f(cx + 0.0625f, 1 - cy);
+                glVertex3f(0.04, 0.04, 0);
+                glTexCoord2f(cx, 1 - cy);
+                glVertex3f(0, 0.04, 0);
+            glEnd();
+            glTranslated(0.04, 0, 0);
+        glEndList();
+    }
+}
+
+
+   
+void VolumeRenderer::glPrint(char* string, int set){
+
+    if(set>1) set=1;
+
+    glBindTexture(GL_TEXTURE_2D, font_texture);
+
+    glListBase(font_base - 32 + (128 * set));
+    glCallLists(strlen(string), GL_BYTE, string);
+
+}
+

trunk/gui/vizservers/nanovis/VolumeRenderer.h

@@ -46 +46 @@
   bool volume_mode;     //enable full volume rendering
 
+
   //cg related
   CGcontext g_context;          //the Nvidia cg context 
@@ -70 +71 @@
   void get_near_far_z(Mat4x4 mv, double &zNear, double &zFar);
 
+  void init_font(char* filename);
+  GLuint font_texture;                          //the id of the font texture
+  void glPrint(char* string, int set);          //there are two sets of font in the texture. 0, 1
+  void draw_label(int volume_index);            //draw label using bitmap texture
+  GLuint font_base;                             //the base of the font display list
+  void build_font();                            //register the location of each alphabet in the texture
+
 public:
   VolumeRenderer(CGcontext _context);

trunk/gui/vizservers/nanovis/nanovis.cpp

@@ -46 +46 @@
 
 //if true nanovis renders volumes in 3D, if not renders 2D plane
-bool volume_mode = true;
+bool volume_mode = true; 
 
 // color table for built-in transfer function editor
@@ -272 +272 @@
 
         int axis;
-        if (GetAxis(interp, argv[3], &axis) != TCL_OK) {
+        if (GetAxis(interp, (char*) argv[3], &axis) != TCL_OK) {
             return TCL_ERROR;
         }
@@ -320 +320 @@
 
         int axis;
-        if (GetAxis(interp, argv[3], &axis) != TCL_OK) {
+        if (GetAxis(interp, (char*) argv[3], &axis) != TCL_OK) {
             return TCL_ERROR;
         }
@@ -421 +421 @@
         char **xferv;
 
-        if (Tcl_SplitList(interp, argv[3], &xferc, &xferv) != TCL_OK) {
+        if (Tcl_SplitList(interp, argv[3], &xferc, (const char***) &xferv) != TCL_OK) {
             return TCL_ERROR;
         }
@@ -664 +664 @@
 
             float rgb[3];
-            if (GetColor(interp, argv[3], rgb) != TCL_OK) {
+            if (GetColor(interp, (char*) argv[3], rgb) != TCL_OK) {
                 return TCL_ERROR;
             }
@@ -708 +708 @@
 
             float cval[3];
-                if (GetColor(interp, argv[3], cval) != TCL_OK) {
+                if (GetColor(interp, (char*) argv[3], cval) != TCL_OK) {
                         return TCL_ERROR;
                 }
@@ -976 +976 @@
     int rgbc;
     char **rgbv;
-    if (Tcl_SplitList(interp, str, &rgbc, &rgbv) != TCL_OK) {
+    if (Tcl_SplitList(interp, str, &rgbc, (const char***)&rgbv) != TCL_OK) {
         return TCL_ERROR;
     }
@@ -1929 +1929 @@
    //load_volume_file(0, "./data/nw-AB-Vg=0.000-Vd=1.000-potential.dx");
    //load_volume_file(0, "./data/test2.dx");
-   //load_volume_file(0, "./data/mu-wire-3d.dx");
+   //load_volume_file(0, "./data/mu-wire-3d.dx"); //I added this line to debug: Wei
    //load_volume_file(0, "./data/input_nd_dx_4"); //take a VERY long time?
    //load_vector_file(1, "./data/J-wire-vec.dx");
-   //load_volume_file(1, "./data/mu-wire-3d.dx");
+   //load_volume_file(1, "./data/mu-wire-3d.dx");  //I added this line to debug: Wei
    //load_volume_file(3, "./data/mu-wire-3d.dx");
    //load_volume_file(4, "./data/mu-wire-3d.dx");
@@ -1941 +1941 @@
    //create volume renderer and add volumes to it
    vol_render = new VolumeRenderer(g_context);
+
+   /*
+   //I added this to debug : Wei
+   float tmp_data[4*124];
+   TransferFunction* tmp_tf = new TransferFunction(124, tmp_data);
+   vol_render->add_volume(volume[0], tmp_tf);
+   volume[1]->move(Vector3(0.5, 0.6, 0.7));
+   vol_render->add_volume(volume[1], tmp_tf);
+   */
 
    //create an 2D plane renderer
@@ -1947 +1956 @@
 
    plane_render->add_plane(plane[0], get_transfunc("default"));
+
+   assert(glGetError()==0);
 
    //init_particle_system();
@@ -2889 +2900 @@
 
 #ifndef XINETD
-   MainTransferFunctionWindow * tf_window;
-   tf_window = new MainTransferFunctionWindow();
-   tf_window->mainInit();
+   //MainTransferFunctionWindow * tf_window;
+   //tf_window = new MainTransferFunctionWindow();
+   //tf_window->mainInit();
 
    glutMouseFunc(mouse);