cleaning up mixed tabs and spaces

[freeglut] / progs / demos / shapes / shapes.c

diff --git a/progs/demos/shapes/shapes.c b/progs/demos/shapes/shapes.c
index 5f06f03..69c0a1a 100644 (file)
--- a/progs/demos/shapes/shapes.c
+++ b/progs/demos/shapes/shapes.c
@@ -5,16 +5,18 @@
     in OpenGLUT.  It may also be useful to see which
     parameters control what behavior in the OpenGLUT
     objects.
     in OpenGLUT.  It may also be useful to see which
     parameters control what behavior in the OpenGLUT
     objects.

- 
+

     Spinning wireframe and solid-shaded shapes are
     displayed.  Some parameters can be adjusted.
     Spinning wireframe and solid-shaded shapes are
     displayed.  Some parameters can be adjusted.

- 
+

    Keys:
       -    <tt>Esc &nbsp;</tt> Quit
       -    <tt>q Q &nbsp;</tt> Quit
       -    <tt>i I &nbsp;</tt> Show info
       -    <tt>p P &nbsp;</tt> Toggle perspective or orthographic projection
       -    <tt>r R &nbsp;</tt> Toggle fixed or animated rotation around model X-axis
    Keys:
       -    <tt>Esc &nbsp;</tt> Quit
       -    <tt>q Q &nbsp;</tt> Quit
       -    <tt>i I &nbsp;</tt> Show info
       -    <tt>p P &nbsp;</tt> Toggle perspective or orthographic projection
       -    <tt>r R &nbsp;</tt> Toggle fixed or animated rotation around model X-axis

+      -    <tt>s S &nbsp;</tt> Toggle toggle fixed function or shader render path
+      -    <tt>n N &nbsp;</tt> Toggle visualization of object's normal vectors

       -    <tt>= + &nbsp;</tt> Increase \a slices
       -    <tt>- _ &nbsp;</tt> Decreate \a slices
       -    <tt>, < &nbsp;</tt> Decreate \a stacks
       -    <tt>= + &nbsp;</tt> Increase \a slices
       -    <tt>- _ &nbsp;</tt> Decreate \a slices
       -    <tt>, < &nbsp;</tt> Decreate \a stacks

@@ -32,7 +34,7 @@
 
     \author  Portions Copyright (C) 2004, the OpenGLUT project contributors. <br>
              OpenGLUT branched from freeglut in February, 2004.
 
     \author  Portions Copyright (C) 2004, the OpenGLUT project contributors. <br>
              OpenGLUT branched from freeglut in February, 2004.

- 
+

     \image   html openglut_shapes.png OpenGLUT Geometric Shapes Demonstration
     \include demos/shapes/shapes.c
 */
     \image   html openglut_shapes.png OpenGLUT Geometric Shapes Demonstration
     \include demos/shapes/shapes.c
 */

@@ -42,6 +44,7 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>

+#include <stddef.h>

 
 #include "glmatrix.h"
 
 
 #include "glmatrix.h"
 

@@ -60,7 +63,7 @@ void checkError(const char *functionName)
 }
 
 /*
 }
 
 /*

- * OpenGL 2+ shader mode needs some function and macro definitions, 
+ * OpenGL 2+ shader mode needs some function and macro definitions,

  * avoiding a dependency on additional libraries like GLEW or the
  * GL/glext.h header
  */
  * avoiding a dependency on additional libraries like GLEW or the
  * GL/glext.h header
  */

@@ -91,11 +94,6 @@ typedef char ourGLchar;
 #define APIENTRY
 #endif
 
 #define APIENTRY
 #endif
 

-#ifndef GL_VERSION_1_5
-typedef void (APIENTRY *PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers);
-typedef void (APIENTRY *PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer);
-typedef void (APIENTRY *PFNGLBUFFERDATAPROC) (GLenum target, ourGLsizeiptr size, const GLvoid *data, GLenum usage);
-#endif

 #ifndef GL_VERSION_2_0
 typedef GLuint (APIENTRY *PFNGLCREATESHADERPROC) (GLenum type);
 typedef void (APIENTRY *PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const ourGLchar **string, const GLint *length);
 #ifndef GL_VERSION_2_0
 typedef GLuint (APIENTRY *PFNGLCREATESHADERPROC) (GLenum type);
 typedef void (APIENTRY *PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const ourGLchar **string, const GLint *length);

@@ -147,6 +145,11 @@ void initExtensionEntries(void)
     gl_GetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC) glutGetProcAddress ("glGetUniformLocation");
     gl_UniformMatrix4fv = (PFNGLUNIFORMMATRIX4FVPROC) glutGetProcAddress ("glUniformMatrix4fv");
     gl_UniformMatrix3fv = (PFNGLUNIFORMMATRIX3FVPROC) glutGetProcAddress ("glUniformMatrix3fv");
     gl_GetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC) glutGetProcAddress ("glGetUniformLocation");
     gl_UniformMatrix4fv = (PFNGLUNIFORMMATRIX4FVPROC) glutGetProcAddress ("glUniformMatrix4fv");
     gl_UniformMatrix3fv = (PFNGLUNIFORMMATRIX3FVPROC) glutGetProcAddress ("glUniformMatrix3fv");

+    if (!gl_CreateShader || !gl_ShaderSource || !gl_CompileShader || !gl_CreateProgram || !gl_AttachShader || !gl_LinkProgram || !gl_UseProgram || !gl_GetShaderiv || !gl_GetShaderInfoLog || !gl_GetProgramiv || !gl_GetProgramInfoLog || !gl_GetAttribLocation || !gl_GetUniformLocation || !gl_UniformMatrix4fv || !gl_UniformMatrix3fv)
+    {
+        fprintf (stderr, "glCreateShader, glShaderSource, glCompileShader, glCreateProgram, glAttachShader, glLinkProgram, glUseProgram, glGetShaderiv, glGetShaderInfoLog, glGetProgramiv, glGetProgramInfoLog, glGetAttribLocation, glGetUniformLocation, glUniformMatrix4fv or gl_UniformMatrix3fv not found");
+        exit(1);
+    }

 }
 
 const ourGLchar *vertexShaderSource[] = {
 }
 
 const ourGLchar *vertexShaderSource[] = {

@@ -280,9 +283,10 @@ GLint getAttribOrUniformLocation(const char* name, GLuint program, GLboolean isA
         GLint attrib = gl_GetAttribLocation(program, name);
         if (attrib == -1)
         {
         GLint attrib = gl_GetAttribLocation(program, name);
         if (attrib == -1)
         {

-            fprintf(stderr, "Warning: Could not bind attrib %s\n", name);  
+            fprintf(stderr, "Warning: Could not bind attrib %s\n", name);

         }
 
         }
 

+        checkError ("getAttribOrUniformLocation");

         return attrib;
     }
     else
         return attrib;
     }
     else

@@ -290,16 +294,16 @@ GLint getAttribOrUniformLocation(const char* name, GLuint program, GLboolean isA
         GLint uniform = gl_GetUniformLocation(program, name);
         if (uniform == -1)
         {
         GLint uniform = gl_GetUniformLocation(program, name);
         if (uniform == -1)
         {

-            fprintf(stderr, "Warning: Could not bind uniform %s\n", name);  
+            fprintf(stderr, "Warning: Could not bind uniform %s\n", name);

         }
 
         }
 

+        checkError ("getAttribOrUniformLocation");

         return uniform;
     }
         return uniform;
     }

-    checkError ("getAttribOrUniformLocation");

 }
 
 GLuint program;
 }
 
 GLuint program;

-GLint attribute_fg_coord = -1, attribute_fg_normal = -1;  
+GLint attribute_fg_coord = -1, attribute_fg_normal = -1;

 GLint uniform_m = -1, uniform_p = -1, uniform_m_3x3_inv_transp = -1;
 GLint shaderReady = 0;  /* Set to 1 when all initialization went well, to -1 when shader somehow unusable. */
 
 GLint uniform_m = -1, uniform_p = -1, uniform_m_3x3_inv_transp = -1;
 GLint shaderReady = 0;  /* Set to 1 when all initialization went well, to -1 when shader somehow unusable. */
 

@@ -460,24 +464,22 @@ static void drawSolidCone(void)                { glutSolidCone(irad,orad,slices,
 static void drawWireCone(void)                 { glutWireCone(irad,orad,slices,stacks);          }  /* irad doubles as base input, and orad as height input */
 static void drawSolidCylinder(void)            { glutSolidCylinder(irad,orad,slices,stacks);     }  /* irad doubles as radius input, and orad as height input */
 static void drawWireCylinder(void)             { glutWireCylinder(irad,orad,slices,stacks);      }  /* irad doubles as radius input, and orad as height input */
 static void drawWireCone(void)                 { glutWireCone(irad,orad,slices,stacks);          }  /* irad doubles as base input, and orad as height input */
 static void drawSolidCylinder(void)            { glutSolidCylinder(irad,orad,slices,stacks);     }  /* irad doubles as radius input, and orad as height input */
 static void drawWireCylinder(void)             { glutWireCylinder(irad,orad,slices,stacks);      }  /* irad doubles as radius input, and orad as height input */

+/* per Glut manpage, it should be noted that the teapot is rendered
+ * with clockwise winding for front facing polygons...
+ * Same for the teacup and teaspoon
+ */

 static void drawSolidTeapot(void)
 static void drawSolidTeapot(void)

-{
-    /* per Glut manpage, it should be noted that the teapot is rendered
-     * with clockwise winding for front facing polygons...
-     */
-    glFrontFace(GL_CW);
-    glutSolidTeapot(orad);  /* orad doubles as size input */
-    glFrontFace(GL_CCW);
-}
+{   glFrontFace(GL_CW);    glutSolidTeapot(orad);   glFrontFace(GL_CCW);    /* orad doubles as size input */}

 static void drawWireTeapot(void)
 static void drawWireTeapot(void)

-{
-    /* per Glut manpage, it should be noted that the teapot is rendered
-     * with clockwise winding for front facing polygons...
-     */
-    glFrontFace(GL_CW);
-    glutWireTeapot(orad);  /* orad doubles as size input */
-    glFrontFace(GL_CCW);
-}
+{   glFrontFace(GL_CW);    glutWireTeapot(orad);    glFrontFace(GL_CCW);    /* orad doubles as size input */}
+static void drawSolidTeacup(void)
+{   glFrontFace(GL_CW);    glutSolidTeacup(orad);   glFrontFace(GL_CCW);    /* orad doubles as size input */}
+static void drawWireTeacup(void)
+{   glFrontFace(GL_CW);    glutWireTeacup(orad);    glFrontFace(GL_CCW);    /* orad doubles as size input */}
+static void drawSolidTeaspoon(void)
+{   glFrontFace(GL_CW);    glutSolidTeaspoon(orad); glFrontFace(GL_CCW);    /* orad doubles as size input */}
+static void drawWireTeaspoon(void)
+{   glFrontFace(GL_CW);    glutWireTeaspoon(orad);  glFrontFace(GL_CCW);    /* orad doubles as size input */}

 
 #define RADIUSFAC    0.70710678118654752440084436210485f
 
 
 #define RADIUSFAC    0.70710678118654752440084436210485f
 

@@ -552,6 +554,8 @@ static const entry table [] =
     ENTRY (Icosahedron,GEO_NO_SIZE),
     ENTRY (SierpinskiSponge,GEO_SCALE),
     ENTRY (Teapot,GEO_SIZE),
     ENTRY (Icosahedron,GEO_NO_SIZE),
     ENTRY (SierpinskiSponge,GEO_SCALE),
     ENTRY (Teapot,GEO_SIZE),

+    ENTRY (Teacup,GEO_SIZE),
+    ENTRY (Teaspoon,GEO_SIZE),

     ENTRY (Torus,GEO_INNER_OUTER_RAD),
     ENTRY (Sphere,GEO_RAD),
     ENTRY (Cone,GEO_BASE_HEIGHT),
     ENTRY (Torus,GEO_INNER_OUTER_RAD),
     ENTRY (Sphere,GEO_RAD),
     ENTRY (Cone,GEO_BASE_HEIGHT),

@@ -688,6 +692,7 @@ static void display(void)
         gl_UseProgram (program);
         glutSetVertexAttribCoord3(attribute_fg_coord);
         glutSetVertexAttribNormal(attribute_fg_normal);
         gl_UseProgram (program);
         glutSetVertexAttribCoord3(attribute_fg_coord);
         glutSetVertexAttribNormal(attribute_fg_normal);

+        /* There is also a glutSetVertexAttribTexCoord2, which is used only when drawing the teapot, teacup or teaspoon */

 
         gl_matrix_mode(GL_PROJECTION);
         gl_load_identity();
 
         gl_matrix_mode(GL_PROJECTION);
         gl_load_identity();

@@ -795,10 +800,10 @@ key(unsigned char key, int x, int y)
     case '.':
     case '>': stacks++;                   break;
 
     case '.':
     case '>': stacks++;                   break;
 

-    case '9': 
+    case '9':

     case '(': if( depth > -1 ) depth--;   break;
 
     case '(': if( depth > -1 ) depth--;   break;
 

-    case '0': 
+    case '0':

     case ')': ++depth;                    break;
 
     case 'P':
     case ')': ++depth;                    break;
 
     case 'P':

@@ -849,10 +854,12 @@ static void special (int key, int x, int y)
 
     /* Cuboctahedron can't be shown when in shader mode, skip it */
     if (useShader && NUMBEROF (table)-1 == ( unsigned )function_index)
 
     /* 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;
         if (key==GLUT_KEY_PAGE_UP)
             function_index = 0;
         else
             function_index -= 1;

+    }

 }
 
 
 }