How to apply two textures to two sides of a cube

Blitz3D Forums/Blitz3D Programming/How to apply two textures to two sides of a cube

Blitzplotter (Posted 2008) [#1]

I have created 100 cubes, more oblong rectangle shapes which represent cars 'bodies'. I wish to apply the numbers 0 to 99 to the top and bottom of each car. I plan to use 10 number images (0-9), to create the 0 to 99 textures, then identify the top and bottom of each oblong as I create each car body and apply the number to the top and bottom face once I have identified them. So I have my numbers, 1. Would I be better using gifs or pngs for the numbers. 2. How do I glue the numbers together to make a single texture (i.e. 3 next to 6 would make my 36 texture.) 3. How do I identify the top and bottom faces of my cubes. 4. How do I then apply the texture to the two identified faces? Thanks in advance, BP.

Beaker (Posted 2008) [#2]

1) Textures are best as PNGs (you can't use GIFs). 2) Can you not use 2 quads (replacing each cube face) with a digit on each? 3) Not sure. 4) Create a new quad surface with vertices at the same positions?

Blitzplotter (Posted 2008) [#3]

thanks of to find out what a quad is (;-)

Beaker (Posted 2008) [#4]

quad = quadrangle = face = 2 triangles (and 4 vertices)

Warner (Posted 2008) [#5]

This example shows a quad: Graphics3D 800, 600, 0, 2 SetBuffer BackBuffer() ;create new mesh mesh = CreateMesh() ;create surface surf = CreateSurface(mesh) ;create 4 vertices v0 = AddVertex(surf, 1, 1, 0, 1.0, 1.0) v1 = AddVertex(surf, 1, -1, 0, 1.0, 0.0) v2 = AddVertex(surf, -1, -1, 0, 0.0, 0.0) v3 = AddVertex(surf, -1, 1, 0, 0.0, 1.0) ;create 2 triangles AddTriangle surf, v0, v1, v2 AddTriangle surf, v2, v3, v0 ;create camera cam = CreateCamera() MoveEntity cam, 0, 0, -5 ;main loop Repeat ;w = wireframe WireFrame KeyDown(17) RenderWorld Text 0, 0, "w = wireframe" Flip ;esc = exit Until KeyHit(1) End Are you creating the meshes from code, or are you loading them from a file. And in that case, are you using LoadMesh or LoadAnimMesh ?

Blitzplotter (Posted 2008) [#6]

The meshes are being created from code, thanks for the code example will fire up my Blitz PC when I get home and try it out. Right tried it out, added another mesh, so I suppose I somehow add my png(s) to each surf somehow ?:- Graphics3D 800, 600, 0, 2 SetBuffer BackBuffer() ;create new mesh(s) mesh = CreateMesh() mesh2 = CreateMesh() ;create surface(s) surf = CreateSurface(mesh) surf2 = CreateSurface(mesh2) ;create 4 vertices v0 = AddVertex(surf, 1, 1, 0, 1.0, 1.0) v1 = AddVertex(surf, 1, -1, 0, 1.0, 0.0) v2 = AddVertex(surf, -1, -1, 0, 0.0, 0.0) v3 = AddVertex(surf, -1, 1, 0, 0.0, 1.0) ;create another 4 vertices v4 = AddVertex(surf2, 3, 1, 0, 1.0, 1.0) v5 = AddVertex(surf2, 3, -1, 0, 1.0, 0.0) v6 = AddVertex(surf2, 1, -1, 0, 0.0, 0.0) v7 = AddVertex(surf2, 1, 1, 0, 0.0, 1.0) ;create 2 triangles AddTriangle surf, v0, v1, v2 AddTriangle surf, v2, v3, v0 ;create 2 more triangles AddTriangle surf2, v4, v5, v6 AddTriangle surf2, v6, v7, v4 ;create camera cam = CreateCamera() MoveEntity cam, 0, 0, -5 ;main loop Repeat ;w = wireframe WireFrame KeyDown(17) RenderWorld Text 0, 0, "w = wireframe" Flip ;esc = exit Until KeyHit(1) End

Warner (Posted 2008) [#7]

Yes, maybe this example might be helpful: Graphics3D 800, 600, 0, 2 SetBuffer BackBuffer() ;create texture that contains numbers SetFont LoadFont("Arial", 20, 1) tex = CreateTexture(16, 16, 1+8, 10) For i = 0 To 9 Color 255, 0, 0 Rect 0, 0, 16, 16 Color 255, 255, 0 Text 8, 8, i, 1, 1 CopyRect 0, 0, 16, 16, 0, 0, BackBuffer(), TextureBuffer(tex, i) Next ;create new mesh mesh = CreateMesh() ;create surface 1 surf1 = CreateSurface(mesh) ;create 4 vertices v0 = AddVertex(surf1, 0, 1, 0, 1.0, 0.0) v1 = AddVertex(surf1, 0, -1, 0, 1.0, 1.0) v2 = AddVertex(surf1, -1, -1, 0, 0.0, 1.0) v3 = AddVertex(surf1, -1, 1, 0, 0.0, 0.0) ;create 2 triangles AddTriangle surf1, v0, v1, v2 AddTriangle surf1, v2, v3, v0 ;create surface 2 surf2 = CreateSurface(mesh) ;create 4 vertices v0 = AddVertex(surf2, 1, 1, 0, 1.0, 0.0) v1 = AddVertex(surf2, 1, -1, 0, 1.0, 1.0) v2 = AddVertex(surf2, 0, -1, 0, 0.0, 1.0) v3 = AddVertex(surf2, 0, 1, 0, 0.0, 0.0) ;create 2 triangles AddTriangle surf2, v0, v1, v2 AddTriangle surf2, v2, v3, v0 ;create brush, used for painting on the mesh brush = CreateBrush() ;create camera cam = CreateCamera() MoveEntity cam, 0, 0, -5 ;used for delaying counter nxt = MilliSecs() ;main loop Repeat ;w = wireframe WireFrame KeyDown(17) ;turn mesh ;TurnEntity mesh, 1, 2, 3 ;counter that puts number's digits into 'c1' and 'c2' If MilliSecs() > nxt Then nxt = nxt + 250 cc = cc + 1 c1 = (cc / 10) Mod 10 c2 = cc Mod 10 End If ;----update texture----- ;select texture for brush BrushTexture brush, tex, c1 ;assign brush to surface 1 PaintSurface surf1, brush ;select texture for brush BrushTexture brush, tex, c2 ;assign brush to surface 2 PaintSurface surf2, brush ;render world RenderWorld Flip ;esc = exit Until KeyHit(1) End

Blitzplotter (Posted 2008) [#8]

that code looks ideal, have gave it a whirl AND it does the job brilliantly. Thanks for the help.