74 lines
2.6 KiB
Text
74 lines
2.6 KiB
Text
|
' Gambas module file
|
||
|
|
|
||
|
|
'tutorial based on tutorial from NeHe Productions site at http://nehe.gamedev.net/
|
||
|
|
'visit the page for more info on OpenGL
|
||
|
|
'
|
||
|
|
'In this tutorial we introduce triangle and quad shapes.
|
||
|
|
|
||
|
|
' Gambas module file
|
||
|
|
Private screen As New Window(True) As "Screen"
|
||
|
|
|
||
|
|
Public Sub Main()
|
||
|
|
|
||
|
|
With screen
|
||
|
|
.Width = 640
|
||
|
|
.Height = 480
|
||
|
|
.Text = MMain.Title
|
||
|
|
.Show()
|
||
|
|
End With
|
||
|
|
|
||
|
|
End
|
||
|
|
|
||
|
|
Public Sub Screen_Open()
|
||
|
|
|
||
|
|
Gl.ClearDepth(100.0) 'Enables Clearing Of The Depth Buffer
|
||
|
|
gl.ClearColor(0.0, 0.0, 0.0, 0.0) 'This Will Clear The Background Color To Black
|
||
|
|
gl.DepthFunc(gl.LESS) 'The Type Of Depth Test To Do
|
||
|
|
gl.Enable(gl.DEPTH_TEST) 'Enables Depth Testing
|
||
|
|
gl.ShadeModel(gl.SMOOTH) 'Enables Smooth Color Shading
|
||
|
|
gl.MatrixMode(gl.PROJECTION)
|
||
|
|
gl.LoadIdentity() 'Reset The Projection Matrix
|
||
|
|
glu.Perspective(45.0, screen.Width / screen.Height, 0.1, 100.0) 'Calculate The Aspect Ratio Of The Window
|
||
|
|
gl.MatrixMode(gl.MODELVIEW)
|
||
|
|
|
||
|
|
End
|
||
|
|
|
||
|
|
Public Sub Screen_resize()
|
||
|
|
|
||
|
|
Gl.Viewport(0, 0, Screen.Width, Screen.Height)
|
||
|
|
Gl.MatrixMode(Gl.PROJECTION)
|
||
|
|
Gl.LoadIdentity() 'Reset The Projection Matrix
|
||
|
|
glu.Perspective(45.0, screen.Width / screen.Height, 0.1, 100.0) 'Calculate The Aspect Ratio Of The Window
|
||
|
|
Gl.MatrixMode(Gl.MODELVIEW)
|
||
|
|
|
||
|
|
End
|
||
|
|
|
||
|
|
Public Sub Screen_Draw()
|
||
|
|
|
||
|
|
gl.Clear(gl.COLOR_BUFFER_BIT Or gl.DEPTH_BUFFER_BIT) ' Clear The Screen And The Depth Buffer
|
||
|
|
gl.LoadIdentity() 'Reset The View
|
||
|
|
gl.translatef(-1.5, 0.0, -6.0) ' MOVE Left 1.5 Units AND Into The Screen 6.0
|
||
|
|
gl.Begin(gl.TRIANGLES) 'Drawing Using Triangles
|
||
|
|
gl.Vertex3f(0.0, 1.0, 0.0) 'Top
|
||
|
|
gl.Vertex3f(-1.0, -1.0, 0.0) 'Bottom Left
|
||
|
|
gl.Vertex3f(1.0, -1.0, 0.0) 'Bottom Right
|
||
|
|
gl.End() 'Finished Drawing The Triangle
|
||
|
|
|
||
|
|
gl.Translatef(3.0, 0.0, 0.0) 'MOVE Right 3 Units
|
||
|
|
|
||
|
|
gl.Begin(gl.QUADS) 'Draw A Quad
|
||
|
|
gl.Vertex3f(-1.0, 1.0, 0.0) 'Top Left
|
||
|
|
gl.Vertex3f(1.0, 1.0, 0.0) 'Top Right
|
||
|
|
gl.Vertex3f(1.0, -1.0, 0.0) 'Bottom Right
|
||
|
|
gl.Vertex3f(-1.0, -1.0, 0.0) 'Bottom Left
|
||
|
|
gl.End() 'Done Drawing The Quad
|
||
|
|
|
||
|
|
End
|
||
|
|
|
||
|
|
Public Sub Screen_keyPress()
|
||
|
|
|
||
|
|
If (key.code = key.F1) Then screen.Fullscreen = Not screen.Fullscreen
|
||
|
|
If (key.Code = key.Esc) Then Screen.Close()
|
||
|
|
|
||
|
|
End
|