Android - Graphics (Canvas)

[Brian Alvarez]

This example shows transparency and rotation. Of course real moon doesnt rotate like that, it was just to show rotation.

Although the source code for the upcoming OpenGL implementation is almost identical, this source code is for working with
Canvas and direct bitmaps.

Canvas is not as fast as OpenGL (which only changes the CANVAS keyword to OPENGL), but it has functionality not present for OpenGL.

Canvas graphics are very useful for generating sprites on the fly and then load them as an OpenGL shader for use as sprite.

[FONT=Courier New][B]
[COLOR=Blue]#COMPILE[/COLOR] [COLOR=Blue]APK[/COLOR]
[COLOR=Blue]#DIM[/COLOR] [COLOR=Blue]ALL[/COLOR]
[COLOR=Blue]#REPORT[/COLOR] [COLOR=Blue]NONE[/COLOR]
[COLOR=Blue]#ENCODE[/COLOR] [COLOR=Black]NO[/COLOR]
[COLOR=Blue]#PROJECT[/COLOR] [COLOR=DarkGreen]"generic"[/COLOR]
[COLOR=Blue]#VERSION[/COLOR] [COLOR=Blue]AUTO[/COLOR]
[COLOR=Blue]#OPTIONS[/COLOR] [COLOR=Black]LANDSCAPE[/COLOR][COLOR=Black],[/COLOR] [COLOR=Blue]FULLSCREEN[/COLOR][COLOR=Black],[/COLOR] [COLOR=Blue]NONAVIGATION[/COLOR] 

[COLOR=Blue]#SPRITE[/COLOR] [COLOR=Black]Moon[/COLOR][COLOR=Black],[/COLOR]  [COLOR=DarkGreen]"moon.png"[/COLOR][COLOR=Black],[/COLOR]   [COLOR=Black]392[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]392[/COLOR]
[COLOR=Blue]#SPRITE[/COLOR] [COLOR=Black]Cloud[/COLOR][COLOR=Black],[/COLOR] [COLOR=DarkGreen]"clouds.png"[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]596[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]267[/COLOR]


[COLOR=Blue]CALLBACK[/COLOR] [COLOR=Blue]FUNCTION[/COLOR] [COLOR=Black]MoonCicle[/COLOR][COLOR=Black]([/COLOR][COLOR=Black])[/COLOR] [COLOR=Blue]AS[/COLOR] [COLOR=Blue]LONG[/COLOR]

[COLOR=Blue]SELECT[/COLOR] [COLOR=Blue]CASE[/COLOR] [COLOR=Black]cb.msg[/COLOR]
    [COLOR=Blue]CASE[/COLOR] [COLOR=Red]%WM_PREPARE[/COLOR]
        [COLOR=Blue]INITSPRITES[/COLOR]        
        [COLOR=Blue]CANVAS[/COLOR] [COLOR=Blue]SET[/COLOR] [COLOR=Blue]FRAMERATE[/COLOR] [COLOR=Black]cb.hwnd[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]30[/COLOR]
        [COLOR=Blue]CANVAS[/COLOR] [COLOR=Blue]SET[/COLOR] [COLOR=Blue]COLOR[/COLOR]     [COLOR=Black]cb.hwnd[/COLOR][COLOR=Black],[/COLOR] [COLOR=Blue]RGB[/COLOR][COLOR=Black]([/COLOR][COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black])[/COLOR][COLOR=Black],[/COLOR] [COLOR=Blue]RGB[/COLOR][COLOR=Black]([/COLOR][COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black])[/COLOR]
       
        [COLOR=Black]Moon.X[/COLOR] [COLOR=Black]=[/COLOR] [COLOR=Black]10[/COLOR]                            
        [COLOR=Black]Moon.Y[/COLOR] [COLOR=Black]=[/COLOR] [COLOR=Black]10[/COLOR]
        [COLOR=Black]Cloud.X[/COLOR] [COLOR=Black]=[/COLOR] [COLOR=Black]-[/COLOR][COLOR=Black]596[/COLOR]
        [COLOR=Black]Cloud.Y[/COLOR] [COLOR=Black]=[/COLOR] [COLOR=Black]160[/COLOR]
                
    [COLOR=Blue]CASE[/COLOR] [COLOR=Red]%WM_PAINT[/COLOR]    
        [COLOR=Blue]CANVAS[/COLOR] [COLOR=Blue]DRAW[/COLOR] [COLOR=Blue]RECTANGLE[/COLOR] [COLOR=Black]Cb.hwnd[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]1500[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]1200[/COLOR]
                
        [COLOR=Blue]INCR[/COLOR] [COLOR=Black]Moon.angle[/COLOR] [COLOR=Blue]BY[/COLOR] [COLOR=Black]0.1[/COLOR]
        [COLOR=Blue]INCR[/COLOR] [COLOR=Black]Cloud.X[/COLOR] [COLOR=Blue]BY[/COLOR] [COLOR=Black]1[/COLOR]
        [COLOR=Blue]IF[/COLOR] [COLOR=Black]Cloud.X[/COLOR] [COLOR=Black]>[/COLOR] [COLOR=Black]1200[/COLOR] [COLOR=Blue]THEN[/COLOR] [COLOR=Black]Cloud.X[/COLOR] [COLOR=Black]=[/COLOR] [COLOR=Black]-[/COLOR][COLOR=Black]596[/COLOR] [COLOR=Black]:[/COLOR] [COLOR=Black]Cloud.Y[/COLOR] [COLOR=Black]=[/COLOR] [COLOR=Blue]RND[/COLOR][COLOR=Black]([/COLOR][COLOR=Black]120[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]200[/COLOR][COLOR=Black])[/COLOR]
                           
        [COLOR=Blue]CANVAS[/COLOR] [COLOR=Blue]DRAW[/COLOR] [COLOR=Blue]SPRITE[/COLOR] [COLOR=Black]cb.hwnd[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]Moon[/COLOR]
        [COLOR=Blue]CANVAS[/COLOR] [COLOR=Blue]DRAW[/COLOR] [COLOR=Blue]SPRITE[/COLOR] [COLOR=Black]cb.hwnd[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]Cloud[/COLOR]
        
        
[COLOR=Blue]END[/COLOR] [COLOR=Blue]SELECT[/COLOR]

[COLOR=Blue]END[/COLOR] [COLOR=Blue]FUNCTION[/COLOR]


[COLOR=Blue]FUNCTION[/COLOR] [COLOR=Black]PBMAIN[/COLOR][COLOR=Black]([/COLOR][COLOR=Black])[/COLOR] [COLOR=Blue]AS[/COLOR] [COLOR=Blue]LONG[/COLOR]

[COLOR=Blue]LOCAL[/COLOR] [COLOR=Black]hDlg[/COLOR] [COLOR=Blue]AS[/COLOR] [COLOR=Blue]LONG[/COLOR]

[COLOR=Blue]DIALOG[/COLOR] [COLOR=Blue]NEW[/COLOR] [COLOR=Blue]GAME[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=DarkGreen]"Moon Examle"[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR][COLOR=Black],[/COLOR] [COLOR=Black]0[/COLOR] [COLOR=Blue]TO[/COLOR] [COLOR=Black]hDlg[/COLOR]
[COLOR=Blue]DIALOG[/COLOR] [COLOR=Blue]SHOW[/COLOR] [COLOR=Blue]MODAL[/COLOR] [COLOR=Black]hDlg[/COLOR] [COLOR=Blue]CALL[/COLOR] [COLOR=Black]MoonCicle[/COLOR][COLOR=Black]([/COLOR][COLOR=Black])[/COLOR]           

[COLOR=Blue]END[/COLOR] [COLOR=Blue]FUNCTION[/COLOR][/B][/FONT]