the whole range concept doesn't seem to be working for me here.
The program is suppose to render either the full object, or either half. Key 1 and 2 work ( if key 2 really works..i'm not sure because..) . Key 3 doesn't seem to work..i've tried a varity of range input as well. I know changing the pointer will work but i shouldn't have too if range does what it says.
GLGraphics 800,600
glewInit()
Local fltVertex#[] =[ -1.0 , 1.0 , 0.0 , 1.0 , 1.0, 0.0 , -1.0, -1.0, 0.0 , 1.0, -1.0, 0.0 ]
Local fltColor#[] = [ 1.0 , 0.0 , 0.0 , 0.0 , 1.0, 0.0 , 0.0, 0.0, 1.0 , 1.0, 1.0, 0.0 ]
' Red Green Blue Yellow
Local shtElements:Short[] = [ 0:Short, 1:Short, 2:Short, 1:Short, 3:Short , 2:Short ]
glMatrixMode(GL_PROJECTION); ' // Select The Projection Matrix
glLoadIdentity(); '// Reset The Projection Matrix
'// Calculate The Aspect Ratio Of The Window
gluPerspective(45.0 ,Float(GraphicsWidth())/GraphicsHeight(),0.1 ,100.0 );
glMatrixMode(GL_MODELVIEW); '// Select The Modelview Matrix
glLoadIdentity();
glShadeMOdel(GL_SMOOTH);
glClearColor( 0.0, 0.0 , 0.0 , 0.0 )
glEnable(GL_DEPTH_TEST); ' // Enables Depth Testing
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
glEnableClientState(GL_VERTEX_ARRAY)
glEnableCLientState(GL_Color_Array)
glVertexPointer(3, GL_FLOAT , 0 , Varptr(fltVertex[0]) )
glColorPointer(3, GL_FLOAT , 0 , Varptr(fltColor[0]) )
Local KeyInput = KEY_1
While Not KeyHit(KEY_A)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); '// Clear The Screen And The Depth Buffer
glLoadIdentity(); '// Reset The Current Modelview Matrix
glTranslatef( 0.0 , 0.0, -5.0 )
If KeyHit(KEY_1)
Keyinput = KEY_1
ElseIf KeyHit(Key_2)
keyinput = KEY_2
ElseIf KeyHit(Key_3)
keyinput = KEY_3
EndIf
Select KeyInput
Case KEY_1
glDrawRangeElements(GL_TRIANGLES, 0,5,6, GL_UNSIGNED_SHORT , Varptr(shtElements[0]) )
Case Key_2
glDrawRangeElements(GL_TRIANGLES, 0,2,3, GL_UNSIGNED_SHORT , Varptr(shtElements[0]) )
Case Key_3
glDrawRangeElements(GL_TRIANGLES, 3,5,3, GL_UNSIGNED_SHORT , Varptr(shtElements[0]) )
End Select
Flip()
Wend
gldisableClientState(GL_VERTEX_ARRAY)
gldisableCLientState(GL_Color_Array)
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