X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8b089c5e8c8a2140258d150ca1ce42afd3b79e1b..61c213fe224da24ce33c9187263e75a17ca83a04:/samples/opengl/penguin/lw.cpp?ds=sidebyside

diff --git a/samples/opengl/penguin/lw.cpp b/samples/opengl/penguin/lw.cpp
index e7bfe17843..9b2202000c 100644
--- a/samples/opengl/penguin/lw.cpp
+++ b/samples/opengl/penguin/lw.cpp
@@ -16,6 +16,17 @@
  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+#include "wx/wx.h"
+#endif
+
 #ifdef __WXMSW__
 #include <windows.h>
 #endif
@@ -23,23 +34,13 @@
 #include "lw.h"
 #include <stdlib.h>
 #include <stdio.h>
-#include <math.h>
 
-#define wxInt32 int
-#define wxUint32 unsigned int
-
-#ifndef FALSE
-#define FALSE 0
-#endif
-
-#ifndef TRUE
-#define TRUE 1
-#endif
+#if wxUSE_GLCANVAS
 
 #define MK_ID(a,b,c,d) ((((wxUint32)(a))<<24)| \
-			(((wxUint32)(b))<<16)| \
-			(((wxUint32)(c))<< 8)| \
-			(((wxUint32)(d))    ))
+            (((wxUint32)(b))<<16)| \
+            (((wxUint32)(c))<< 8)| \
+            (((wxUint32)(d))    ))
 
 #define ID_FORM MK_ID('F','O','R','M')
 #define ID_LWOB MK_ID('L','W','O','B')
@@ -57,12 +58,23 @@ static wxInt32 read_char(FILE *f)
 
 static wxInt32 read_short(FILE *f)
 {
-  return (read_char(f)<<8) | read_char(f);
+    // the execution path was not always correct
+    // when using the direct evaluation in the return statement
+    wxInt32 first = read_char(f) ;
+    wxInt32 second = read_char(f) ;
+
+  return (first<<8) | second ;
 }
 
 static wxInt32 read_long(FILE *f)
 {
-  return (read_char(f)<<24) | (read_char(f)<<16) | (read_char(f)<<8) | read_char(f);
+    // the execution path was not always correct
+    // when using the direct evaluation in the return statement
+    wxInt32 first = read_char(f) ;
+    wxInt32 second = read_char(f) ;
+    wxInt32 third = read_char(f) ;
+    wxInt32 fourth = read_char(f) ;
+  return (first<<24) | (second<<16) | (third<<8) | fourth ;
 }
 
 static GLfloat read_float(FILE *f)
@@ -78,7 +90,7 @@ static int read_string(FILE *f, char *s)
   do {
     c = read_char(f);
     if (cnt < LW_MAX_NAME_LEN)
-      s[cnt] = c;
+      s[cnt] = (char)c;
     else
       s[LW_MAX_NAME_LEN-1] = 0;
     cnt++;
@@ -109,9 +121,9 @@ static void read_srfs(FILE *f, int nbytes, lwObject *lwo)
     nbytes -= read_string(f,material->name);
 
     /* defaults */
-    material->r = 0.7;
-    material->g = 0.7;
-    material->b = 0.7;
+    material->r = 0.7f;
+    material->g = 0.7f;
+    material->b = 0.7f;
   }
   lwo->material = (lwMaterial*) realloc(lwo->material, sizeof(lwMaterial)*lwo->material_cnt);
 }
@@ -157,7 +169,7 @@ static void read_surf(FILE *f, int nbytes, lwObject *lwo)
 static void read_pols(FILE *f, int nbytes, lwObject *lwo)
 {
   int guess_cnt = lwo->face_cnt;
-  
+
   while (nbytes > 0) {
     lwFace *face;
     int i;
@@ -175,17 +187,17 @@ static void read_pols(FILE *f, int nbytes, lwObject *lwo)
 
     /* allocate space for points */
     face->index = (int*) calloc(sizeof(int)*face->index_cnt,1);
-    
+
     /* read points in */
     for (i=0; i<face->index_cnt; i++) {
       face->index[i] = read_short(f);
       nbytes -= 2;
     }
-    
+
     /* read surface material */
     face->material = read_short(f);
     nbytes -= 2;
-    
+
     /* skip over detail  polygons */
     if (face->material < 0) {
       int det_cnt;
@@ -193,9 +205,9 @@ static void read_pols(FILE *f, int nbytes, lwObject *lwo)
       det_cnt = read_short(f);
       nbytes -= 2;
       while (det_cnt-- > 0) {
-	int cnt = read_short(f);
-	fseek(f, cnt*2+2, SEEK_CUR);
-	nbytes -= cnt*2+2;
+    int cnt = read_short(f);
+    fseek(f, cnt*2+2, SEEK_CUR);
+    nbytes -= cnt*2+2;
       }
     }
     face->material -= 1;
@@ -223,7 +235,7 @@ static void read_pnts(FILE *f, int nbytes, lwObject *lwo)
 
 
 
-int lw_is_lwobject(const char *lw_file)
+bool lw_is_lwobject(const char *lw_file)
 {
   FILE *f = fopen(lw_file, "rb");
   if (f) {
@@ -232,22 +244,17 @@ int lw_is_lwobject(const char *lw_file)
     wxInt32 lwob = read_long(f);
     fclose(f);
     if (form == ID_FORM && nlen != 0 && lwob == ID_LWOB)
-      return TRUE;
+      return true;
   }
-  return FALSE;
+  return false;
 }
 
 
 lwObject *lw_object_read(const char *lw_file)
 {
-  FILE *f = NULL;
-  lwObject *lw_object = NULL;
-
-  wxInt32 form_bytes = 0;
-  wxInt32 read_bytes = 0;
 
   /* open file */
-  f = fopen(lw_file, "rb");
+  FILE *f = fopen(lw_file, "rb");
   if (f == NULL) {
     return NULL;
   }
@@ -257,7 +264,10 @@ lwObject *lw_object_read(const char *lw_file)
     fclose(f);
     return NULL;
   }
-  form_bytes = read_long(f);
+
+  wxInt32 read_bytes = 0;
+
+  wxInt32 form_bytes = read_long(f);
   read_bytes += 4;
 
   if (read_long(f) != ID_LWOB) {
@@ -266,7 +276,7 @@ lwObject *lw_object_read(const char *lw_file)
   }
 
   /* create new lwObject */
-  lw_object = (lwObject*) calloc(sizeof(lwObject),1);
+  lwObject *lw_object = (lwObject*) calloc(sizeof(lwObject),1);
 
   /* read chunks */
   while (read_bytes < form_bytes) {
@@ -361,13 +371,13 @@ void lw_object_show(const lwObject *lw_object)
       prev_index_cnt = face->index_cnt;
       switch (face->index_cnt) {
       case 3:
-	glBegin(GL_TRIANGLES);
-	break;
+    glBegin(GL_TRIANGLES);
+    break;
       case 4:
-	glBegin(GL_QUADS);
-	break;
+    glBegin(GL_QUADS);
+    break;
       default:
-	glBegin(GL_POLYGON);
+    glBegin(GL_POLYGON);
       }
     }
 
@@ -375,8 +385,8 @@ void lw_object_show(const lwObject *lw_object)
     if (prev_material != face->material) {
       prev_material = face->material;
       glColor3f(lw_object->material[face->material].r,
-		lw_object->material[face->material].g,
-		lw_object->material[face->material].b);
+        lw_object->material[face->material].g,
+        lw_object->material[face->material].b);
     }
 
     /* update normal if necessary */
@@ -424,4 +434,5 @@ void lw_object_scale(lwObject *lwo, GLfloat scale)
   }
 }
 
+#endif