Normal quotes

65-03.md

@@ -20,7 +20,7 @@
         {
             nextvert = (i + 1) % pin->numverts;
 
-            // Keep the current vertex if it’s inside the plane
+            // Keep the current vertex if it's inside the plane
             if (curin)
                 *poutvert++ = *pinvert;
 
@@ -56,22 +56,22 @@
     }
 
 Believe it or not, this technique, applied in turn to each edge, is all
-that’s needed to clip a polygon to a plane. Better yet, a polygon can be
+that's needed to clip a polygon to a plane. Better yet, a polygon can be
 clipped to multiple planes by repeating the above process once for each
 clip plane, with each interation trimming away any part of the polygon
-that’s clipped by that particular plane.
+that's clipped by that particular plane.
 
-One particularly useful aspect of 3-D clipping is that if you’re drawing
+One particularly useful aspect of 3-D clipping is that if you're drawing
 texture mapped polygons, texture coordinates can be clipped in exactly
 the same way as (x,y,z) coordinates. In fact, the very same fraction
-that’s used to advance x, y, and z from the inside point to the point of
+that's used to advance x, y, and z from the inside point to the point of
 intersection with the clip plane can be used to advance the texture
 coordinates as well, so only one extra multiply and one extra add are
 required for each texture coordinate.
 
 #### Clipping to the Frustum {#Heading6}
 
-Given a polygon-clipping function, it’s easy to clip to the frustum: set
+Given a polygon-clipping function, it's easy to clip to the frustum: set
 up the four planes for the sides of the frustum, with another one or two
 planes for near and far clipping, if desired; next, clip each
 potentially visible polygon to each plane in turn; then draw whatever
@@ -378,7 +378,7 @@ is available on the CD-ROM in the file DDJCLIP.ZIP.
             }
             pobject = pobject->pnext;
         }
-        // We’ve drawn the frame; copy it to the screen
+        // We've drawn the frame; copy it to the screen
         hdcScreen = GetDC(hwndOutput);
         holdpal = SelectPalette(hdcScreen, hpalDIB, FALSE);
         RealizePalette(hdcScreen);