Moving Lines

[saboteur]

Anybody point me to a sample or tell me how I can plot a line then move it ?

Eventualy I want to be able to plot a wireframe 3d image and rotate it, but I cant quite figure how this is done in feenix.

Also if anyone can point out how to display a .png and move that about then that would be cool too.

Cheers

 

[sam fisher]

There are many ways. You could assign the PNG to the graph of a variable for example.

Or you could store the x and y co-ordinates in variables and each frame, clear the screen and re-blit the image at the new co-ordinates.

 

[saboteur]

Thanks for the reply sam

so basically :

start loop
change colour to background
plot old line
change colour to foreground
plot new line
frame
loop

does this get flickery ??

Incidentaly - I don't really understand the colour settings for lines - my app is black and white anyhoo.

I'll give it a go anyhoo and post my code.

cheers

 

[Quiest]

You could just try draw_line command in Fenix, which lets you draw a line from point A to B.
To change the color of the line, use drawing_color(rgb(r,g,B));
Use delete_draw(0) to get rid of old draws.

 

[saboteur]

Sorry to appear completely dumb but I'm really not getting this.

Forgetting lines for now ( I can plot them fine, getting them moving is causing a problem ) I thnk I can do what i need by creating the image as a .PNG and then moving this about.

Any body got some GP2x source thay want to share for placing and moving graphics real time ?? I have no need for user interaction - it's just a hands off demo.

Feenix is really usefull, but man it's tough without examples

As a plus i've got a background image and can place text where i want it

Thanks for everyones help and I hope i'm not p****** anyone off.

Cheers

 

[Alex.]

Have a look at this:

http://www.gp32x.de/cgi-bin/cfiles.cgi?0,0,0,0,48,587

 

[saboteur]

Thanks alex that's cleared quite a few things up for me.

 

[saboteur]

Is it possible to use a PNG as a sprite ?? Do you use MAP commands tu utilise it ??

I'm getting hung up on this ( most examples use FPG )

Cheers

 

[saboteur]

Is it possible to use a PNG as a sprite ?? Do you use MAP commands tu utilise it ??

I'm getting hung up on this ( most examples use FPG )

Cheers

 

[saboteur]

Is it possible to use a PNG as a sprite ?? Do you use MAP commands tu utilise it ??

I'm getting hung up on this ( most examples use FPG )

Cheers

 

[sam fisher]

Stop reposting the same content. Just use the LOAD_PNG function.

 

[saboteur]

Is it possible to use a PNG as a sprite ?? Do you use MAP commands tu utilise it ??

I'm getting hung up on this ( most examples use FPG )

Cheers

 

[Alex.]

QPD - Quadruple personality disorder!

 

[saboteur]

QPD - Quadruple personality disorder!

Whoa - not sure what's going on there - look at the times of the post's.

Sorry for all that.