Any way to mirror the complete output?

no-reply@allegro.cc (Reilly Hamilton) — Tue, 08 May 2007 07:58:37 +0000

Is there any way to mirror the entire output in Allegro?

I'm developing a program that needs to be used in an environment where the display reflects off a mirror onto the final projection surface. Is there an easy way to do this in Allegro?

no-reply@allegro.cc (Rampage) — Tue, 08 May 2007 08:10:43 +0000

draw_sprite_v_flip()
draw_sprite_h_flip()
draw_sprite_vh_flip

The manual said:

These are like draw_sprite(), but they additionally flip the image vertically, horizontally, or both, respectively. Flipping vertically means that the y-axis is reversed, while flipping horizontally means that the x-axis is reversed, between the source and the destination. This produces exact mirror images, which is not the same as rotating the sprite (and it is a lot faster than the rotation routine). The sprite must be a memory bitmap.

no-reply@allegro.cc (julian_boolean) — Tue, 08 May 2007 08:15:04 +0000

Your talking about reflections right? Like looking into water or a mirror? Holy crap Allegro has functions for that?? Sweeeeet

no-reply@allegro.cc (Reilly Hamilton) — Wed, 09 May 2007 03:22:00 +0000

I'm looking for a way to mirror the entire screen, not just a sprite.

Is there a way to mirror the display buffer?

no-reply@allegro.cc (X-G) — Wed, 09 May 2007 03:26:02 +0000

Of course. When copying your backbuffer to the screen, simply draw it upside-down.

no-reply@allegro.cc (gnolam) — Wed, 09 May 2007 03:39:01 +0000

Be sure to clear the buffer with magenta/palette index 0 first though (iff you use it anywhere in your graphics, that is).

no-reply@allegro.cc (gillius) — Wed, 09 May 2007 05:09:38 +0000

I'm really curious to hear where you have an environment where the user views the screen via a mirror...

no-reply@allegro.cc (Reilly Hamilton) — Wed, 09 May 2007 06:37:21 +0000

We're creating a Heads-Up Display for use in automobiles. The image is reflected off of the windshield, and therefore needs to be flipped horizontally.

Thanks for the help, should be pretty simple.

no-reply@allegro.cc (gillius) — Wed, 09 May 2007 09:07:12 +0000

Nice I was hoping it was something like that . I work on vehicle sensor systems and diagnostics... I wish we had that for our display . I doubt any of our vehicles have a suitable windshield as they are all either vertical or non-existent.

no-reply@allegro.cc (Rampage) — Wed, 09 May 2007 09:42:14 +0000

Hey! Where are my cookies? :(" />

no-reply@allegro.cc (ixilom) — Wed, 09 May 2007 18:22:17 +0000

I ate 'em, tasted bad

no-reply@allegro.cc (ImLeftFooted) — Thu, 10 May 2007 03:23:16 +0000

Cooool, allegro is taking over the automobile industry!

no-reply@allegro.cc (GullRaDriel) — Thu, 10 May 2007 11:06:05 +0000

Heh, you do not know the new lamborghini Allegro VT ? ;-P

{"name":"lamborghini_diablo_sexycar_bis.jpg","src":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/e\/5\/e52e5bcebe0bd930d78bea70dc79d93b.jpg","w":250,"h":324,"tn":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/e\/5\/e52e5bcebe0bd930d78bea70dc79d93b"}

no-reply@allegro.cc (Kibiz0r) — Thu, 10 May 2007 11:51:39 +0000