X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;ds=sidebyside;f=progs%2Fdemos%2Fshapes%2Fshapes.c;h=ef329881a3f6acba314f4ed60696cb7b3226d017;hb=3a5df7e8d5491543374a287064a8b0430f8b715e;hp=c22c055359e82111548f57bc7891ecffc59fc871;hpb=3136450d49cc52d5180f644d01a1e425f388ba7e;p=freeglut

diff --git a/progs/demos/shapes/shapes.c b/progs/demos/shapes/shapes.c
index c22c055..ef32988 100644
--- a/progs/demos/shapes/shapes.c
+++ b/progs/demos/shapes/shapes.c
@@ -420,6 +420,7 @@ static float ar;
 static GLboolean persProject = GL_TRUE;
 static GLboolean animateXRot = GL_FALSE;
 static GLboolean useShader   = GL_FALSE;
+static GLboolean visNormals  = GL_FALSE;
 
 /*
  * These one-liners draw particular objects, fetching appropriate
@@ -467,54 +468,56 @@ static void drawWireTeapot(void)
     glFrontFace(GL_CCW);
 }
 
-#define RADIUS    1.0f
+#define RADIUSFAC    0.70710678118654752440084436210485f
 
 static void drawSolidCuboctahedron(void)
 {
+  GLfloat radius = RADIUSFAC*(GLfloat)orad; /* orad doubles as size */
   glBegin( GL_TRIANGLES );
-    glNormal3d( 0.577350269189, 0.577350269189, 0.577350269189); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS, RADIUS ); glVertex3d( RADIUS, 0.0, RADIUS );
-    glNormal3d( 0.577350269189, 0.577350269189,-0.577350269189); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0, RADIUS,-RADIUS );
-    glNormal3d( 0.577350269189,-0.577350269189, 0.577350269189); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( 0.0,-RADIUS, RADIUS );
-    glNormal3d( 0.577350269189,-0.577350269189,-0.577350269189); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS,-RADIUS ); glVertex3d( RADIUS, 0.0,-RADIUS );
-    glNormal3d(-0.577350269189, 0.577350269189, 0.577350269189); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0, RADIUS ); glVertex3d( 0.0, RADIUS, RADIUS );
-    glNormal3d(-0.577350269189, 0.577350269189,-0.577350269189); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS,-RADIUS ); glVertex3d(-RADIUS, 0.0,-RADIUS );
-    glNormal3d(-0.577350269189,-0.577350269189, 0.577350269189); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS, RADIUS ); glVertex3d(-RADIUS, 0.0, RADIUS );
-    glNormal3d(-0.577350269189,-0.577350269189,-0.577350269189); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0,-RADIUS,-RADIUS );
+    glNormal3d( 0.577350269189, 0.577350269189, 0.577350269189); glVertex3d( radius, radius, 0.0 ); glVertex3d( 0.0, radius, radius ); glVertex3d( radius, 0.0, radius );
+    glNormal3d( 0.577350269189, 0.577350269189,-0.577350269189); glVertex3d( radius, radius, 0.0 ); glVertex3d( radius, 0.0,-radius ); glVertex3d( 0.0, radius,-radius );
+    glNormal3d( 0.577350269189,-0.577350269189, 0.577350269189); glVertex3d( radius,-radius, 0.0 ); glVertex3d( radius, 0.0, radius ); glVertex3d( 0.0,-radius, radius );
+    glNormal3d( 0.577350269189,-0.577350269189,-0.577350269189); glVertex3d( radius,-radius, 0.0 ); glVertex3d( 0.0,-radius,-radius ); glVertex3d( radius, 0.0,-radius );
+    glNormal3d(-0.577350269189, 0.577350269189, 0.577350269189); glVertex3d(-radius, radius, 0.0 ); glVertex3d(-radius, 0.0, radius ); glVertex3d( 0.0, radius, radius );
+    glNormal3d(-0.577350269189, 0.577350269189,-0.577350269189); glVertex3d(-radius, radius, 0.0 ); glVertex3d( 0.0, radius,-radius ); glVertex3d(-radius, 0.0,-radius );
+    glNormal3d(-0.577350269189,-0.577350269189, 0.577350269189); glVertex3d(-radius,-radius, 0.0 ); glVertex3d( 0.0,-radius, radius ); glVertex3d(-radius, 0.0, radius );
+    glNormal3d(-0.577350269189,-0.577350269189,-0.577350269189); glVertex3d(-radius,-radius, 0.0 ); glVertex3d(-radius, 0.0,-radius ); glVertex3d( 0.0,-radius,-radius );
   glEnd();
 
   glBegin( GL_QUADS );
-    glNormal3d( 1.0, 0.0, 0.0 ); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0,-RADIUS );
-    glNormal3d(-1.0, 0.0, 0.0 ); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0, RADIUS );
-    glNormal3d( 0.0, 1.0, 0.0 ); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS,-RADIUS ); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS, RADIUS );
-    glNormal3d( 0.0,-1.0, 0.0 ); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS, RADIUS ); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS,-RADIUS );
-    glNormal3d( 0.0, 0.0, 1.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( 0.0, RADIUS, RADIUS ); glVertex3d(-RADIUS, 0.0, RADIUS ); glVertex3d( 0.0,-RADIUS, RADIUS );
-    glNormal3d( 0.0, 0.0,-1.0 ); glVertex3d( RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0,-RADIUS,-RADIUS ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0, RADIUS,-RADIUS );
+    glNormal3d( 1.0, 0.0, 0.0 ); glVertex3d( radius, radius, 0.0 ); glVertex3d( radius, 0.0, radius ); glVertex3d( radius,-radius, 0.0 ); glVertex3d( radius, 0.0,-radius );
+    glNormal3d(-1.0, 0.0, 0.0 ); glVertex3d(-radius, radius, 0.0 ); glVertex3d(-radius, 0.0,-radius ); glVertex3d(-radius,-radius, 0.0 ); glVertex3d(-radius, 0.0, radius );
+    glNormal3d( 0.0, 1.0, 0.0 ); glVertex3d( radius, radius, 0.0 ); glVertex3d( 0.0, radius,-radius ); glVertex3d(-radius, radius, 0.0 ); glVertex3d( 0.0, radius, radius );
+    glNormal3d( 0.0,-1.0, 0.0 ); glVertex3d( radius,-radius, 0.0 ); glVertex3d( 0.0,-radius, radius ); glVertex3d(-radius,-radius, 0.0 ); glVertex3d( 0.0,-radius,-radius );
+    glNormal3d( 0.0, 0.0, 1.0 ); glVertex3d( radius, 0.0, radius ); glVertex3d( 0.0, radius, radius ); glVertex3d(-radius, 0.0, radius ); glVertex3d( 0.0,-radius, radius );
+    glNormal3d( 0.0, 0.0,-1.0 ); glVertex3d( radius, 0.0,-radius ); glVertex3d( 0.0,-radius,-radius ); glVertex3d(-radius, 0.0,-radius ); glVertex3d( 0.0, radius,-radius );
   glEnd();
 }
 
 static void drawWireCuboctahedron(void)
 {
+  GLfloat radius = RADIUSFAC*(GLfloat)orad; /* orad doubles as size */
   glBegin( GL_LINE_LOOP );
-    glNormal3d( 1.0, 0.0, 0.0 ); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( RADIUS, 0.0,-RADIUS );
+    glNormal3d( 1.0, 0.0, 0.0 ); glVertex3d( radius, radius, 0.0 ); glVertex3d( radius, 0.0, radius ); glVertex3d( radius,-radius, 0.0 ); glVertex3d( radius, 0.0,-radius );
   glEnd();
   glBegin( GL_LINE_LOOP );
-    glNormal3d(-1.0, 0.0, 0.0 ); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d(-RADIUS, 0.0, RADIUS );
+    glNormal3d(-1.0, 0.0, 0.0 ); glVertex3d(-radius, radius, 0.0 ); glVertex3d(-radius, 0.0,-radius ); glVertex3d(-radius,-radius, 0.0 ); glVertex3d(-radius, 0.0, radius );
   glEnd();
   glBegin( GL_LINE_LOOP );
-    glNormal3d( 0.0, 1.0, 0.0 ); glVertex3d( RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS,-RADIUS ); glVertex3d(-RADIUS, RADIUS, 0.0 ); glVertex3d( 0.0, RADIUS, RADIUS );
+    glNormal3d( 0.0, 1.0, 0.0 ); glVertex3d( radius, radius, 0.0 ); glVertex3d( 0.0, radius,-radius ); glVertex3d(-radius, radius, 0.0 ); glVertex3d( 0.0, radius, radius );
   glEnd();
   glBegin( GL_LINE_LOOP );
-    glNormal3d( 0.0,-1.0, 0.0 ); glVertex3d( RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS, RADIUS ); glVertex3d(-RADIUS,-RADIUS, 0.0 ); glVertex3d( 0.0,-RADIUS,-RADIUS );
+    glNormal3d( 0.0,-1.0, 0.0 ); glVertex3d( radius,-radius, 0.0 ); glVertex3d( 0.0,-radius, radius ); glVertex3d(-radius,-radius, 0.0 ); glVertex3d( 0.0,-radius,-radius );
   glEnd();
   glBegin( GL_LINE_LOOP );
-    glNormal3d( 0.0, 0.0, 1.0 ); glVertex3d( RADIUS, 0.0, RADIUS ); glVertex3d( 0.0, RADIUS, RADIUS ); glVertex3d(-RADIUS, 0.0, RADIUS ); glVertex3d( 0.0,-RADIUS, RADIUS );
+    glNormal3d( 0.0, 0.0, 1.0 ); glVertex3d( radius, 0.0, radius ); glVertex3d( 0.0, radius, radius ); glVertex3d(-radius, 0.0, radius ); glVertex3d( 0.0,-radius, radius );
   glEnd();
   glBegin( GL_LINE_LOOP );
-    glNormal3d( 0.0, 0.0,-1.0 ); glVertex3d( RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0,-RADIUS,-RADIUS ); glVertex3d(-RADIUS, 0.0,-RADIUS ); glVertex3d( 0.0, RADIUS,-RADIUS );
+    glNormal3d( 0.0, 0.0,-1.0 ); glVertex3d( radius, 0.0,-radius ); glVertex3d( 0.0,-radius,-radius ); glVertex3d(-radius, 0.0,-radius ); glVertex3d( 0.0, radius,-radius );
   glEnd();
 }
 
-#undef RADIUS
+#undef RADIUSFAC
 
 /*
  * This structure defines an entry in our function-table.
@@ -541,7 +544,7 @@ static const entry table [] =
     ENTRY (Sphere),
     ENTRY (Cone),
     ENTRY (Cylinder),
-    ENTRY (Cuboctahedron)
+    ENTRY (Cuboctahedron)   /* This one doesn't work when in shader mode and is then skipped */
 };
 #undef ENTRY
 
@@ -604,8 +607,8 @@ resize(int width, int height)
 static void display(void)
 {
     const double t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
-    const double a = t*90.0;
-    const double b = (animateXRot?t:1)*60.0;
+    const double a = t*89.0;
+    const double b = (animateXRot?t:1)*67.0;
 
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
@@ -659,6 +662,7 @@ static void display(void)
     else
     {
         /* fixed function pipeline */
+        glutSetOption(GLUT_OBJECTS_VISUALIZE_NORMALS,visNormals);   /* Normals visualized or not? */
         glMatrixMode(GL_PROJECTION);
         glLoadIdentity();
         if (persProject)
@@ -698,14 +702,21 @@ static void display(void)
         shapesPrintf (5, 1, "Outer radius  Up  Down : %f", orad);
         shapesPrintf (6, 1, "Inner radius Left Right: %f", irad);
         if (persProject)
-            shapesPrintf (7, 1, "Perspective projection");
+            shapesPrintf (7, 1, "Perspective projection (p)");
         else
-            shapesPrintf (7, 1, "Orthographic projection");
+            shapesPrintf (7, 1, "Orthographic projection (p)");
         if (useShader)
-            shapesPrintf (8, 1, "Using shader");
+            shapesPrintf (8, 1, "Using shader (s)");
         else
-            shapesPrintf (8, 1, "Using fixed function pipeline");
+            shapesPrintf (8, 1, "Using fixed function pipeline (s)");
+        if (animateXRot)
+            shapesPrintf (9, 1, "2D rotation (r)");
+        else
+            shapesPrintf (9, 1, "1D rotation (r)");
+        if (!useShader)
+            shapesPrintf (10, 1, "visualizing normals: %i (n)",visNormals);
     } else {
+        /* print to command line instead */
         printf ( "Shape %d slides %d stacks %d\n", function_index, slices, stacks ) ;
     }
 
@@ -750,7 +761,15 @@ key(unsigned char key, int x, int y)
     case 'r': animateXRot=!animateXRot;   break;
 
     case 'S':
-    case 's': useShader=!useShader;       break;
+    case 's':
+        useShader=!useShader;
+        /* Cuboctahedron can't be shown when in shader mode, move to next */
+        if (useShader && NUMBEROF (table)-1 == ( unsigned )function_index)
+                function_index = 0;
+        break;
+
+    case 'N':
+    case 'n': visNormals=!visNormals;     break;
 
     default:
         break;
@@ -780,6 +799,13 @@ static void special (int key, int x, int y)
 
     if (NUMBEROF (table) <= ( unsigned )function_index)
         function_index = 0;
+
+    /* Cuboctahedron can't be shown when in shader mode, skip it */
+    if (useShader && NUMBEROF (table)-1 == ( unsigned )function_index)
+        if (key==GLUT_KEY_PAGE_UP)
+            function_index = 0;
+        else
+            function_index -= 1;
 }
 
 
@@ -804,7 +830,7 @@ const GLfloat high_shininess[] = { 100.0f };
 int
 main(int argc, char *argv[])
 {
-    glutInitWindowSize(640,480);
+    glutInitWindowSize(800,600);
     glutInitWindowPosition(40,40);
     glutInit(&argc, argv);
     glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH | GLUT_MULTISAMPLE);