+ glTexCoord2f( (x+1)*squareSize, (z+1)*squareSize );
+ glVertex3f ( (x+1)*squareSize, 0.0, (z+1)*squareSize );
+
+ glTexCoord2f( (x+1)*squareSize, z*squareSize );
+ glVertex3f ( (x+1)*squareSize, 0.0, z*squareSize );
+
+ glTexCoord2f( x*squareSize, z*squareSize );
+ glVertex3f ( x*squareSize, 0.0, z*squareSize );
+
+ glTexCoord2f( x*squareSize, (z+1)*squareSize );
+ glVertex3f ( x*squareSize, 0.0, (z+1)*squareSize );