PureBasic Forums - English

hi,

last days i was playing with some programming techniques

here a small demo with 4 parts, maybe someone know
which part uses which technique?! ^^



download 666kb

have fun =)

Looks like 3D with shaders but the movement is so nauseating I can't study it

3d, raytrace, 2d, shader ?

Hard to say since every thing can be done in multiple ways and you end up with the same pixels, anyway let's try :

1) 2d textures + a shader
2) no idea (almost all white, is it supposed to look that way ?)
3) could be done in too many ways
4) parallax mapping through a shader

good

now the unbelievable truth, all parts are 2d:

-No floats
-No using of any 3d commands, also No shaders
-No higher maths, like tan, sqr and so on, just sin/cos in a table of longs ( Sin(i*(2*#PI/360))*1000 )
..also no raytracing , no voxels
-No real 3d matrix calculation

it's just simple drawing with plots
z = (y*15)+zoomvalue ;simple depth
u = (dx * cosw - dy * sinw) /z ;pos= texturecoordinates
v = (dx * sinw + dy * cosw) /z ;simple 2d rot div depth
dx and dy = drawx/2 drawy/2..center of screen

the last part adds highmap-values to simulate parallax,and draw lines
line(x, y-highmapvalue ,x, y+highmapvalue) but it's no voxel engine

Great demo.
The Super Nintendo actualy had hardware support for such drawing called mode7.

Nice demo
Is this a secret code project, or can you release source code to see how its done.

Nice demo, I really like #3 and #4.

electrochrisso wrote:Nice demo
Is this a secret code project, or can you release source code to see how its done.

I wonder this too.

for this demo i use opengl
but here a pb-drawing code of the ball-part:

give me 182kb fun

xperience2003 wrote:for this demo i use opengl
but here a pb-drawing code of the ball-part:

give me 182kb fun

Quite amazing for the small amount of code, I am going to study this in more detail, thanks for sharing.

I am wondering why I can't run it under opengl, do I need to install it on my win7 machine, or is it my graphics chip, works fine with DirectX.