Path: utzoo!mnetor!uunet!husc6!think!ames!oliveb!sun!pepper!cmcmanis
From: cmcmanis%pepper@Sun.COM (Chuck McManis)
Newsgroups: comp.sys.amiga
Subject: Re: Need MORE HELP on GAME DEVELOPMENT on the Amiga
Message-ID: <39432@sun.uucp>
Date: 20 Jan 88 19:32:16 GMT
References: <1617@ssc-vax.UUCP> <5038@well.UUCP>
Sender: news@sun.uucp
Reply-To: cmcmanis@sun.UUCP (Chuck McManis)
Organization: Sun Microsystems, Mountain View
Lines: 25
Keywords: Just one more question (or two)...

In article <5038@well.UUCP> ewhac@well.UUCP (Leo 'Bols Ewhac' Schwab) writes:
|>	/*
|>	 * Example assumes that colors 8-15 are dimmer versions of
|>	 * colors 0-7.
|>	 */
|>	SetAPen (RastPort, 0xffL);	/*  Set all bits  */
|>	RastPort.Mask = 0x08;		/*  Set high bit  */
|>	/*  Draw shadow over whatever's there.  */
|>	RectFill (RastPort, x1, y1, x2, y2);

Just out of curiosity, has anyone tried opening a 4 bitplane window,
and then creating two additional rastports one of which is a 3 plane,
and one of which is a 1 plane? Then for background images you draw
into the 3 plane rastport, and for shadow stuff you draw into the 
1 plane rastport. Maybe setup Bobs for both and use them simultaneously?
Just a thought, I'll have to try it out sometime. Also there is the
TV*Text way of doing shadows. Basically you use a pattern fill, and fill
a light dither of black into your background. Due to the way the eye 
perceives things the area will seem 'darker'. Try using the gadget 
ghosting pattern (which if I recall is 0x8888,0x2222).


--Chuck McManis
uucp: {anywhere}!sun!cmcmanis   BIX: cmcmanis  ARPAnet: cmcmanis@sun.com
These opinions are my own and no one elses, but you knew that didn't you.