suppose i wanted to use a craft.model cube as a die (six-sided, half a pair of dice, …). seems either i need six images, and somehow map each one to a face, or a single image that wraps the die properly. i can produce either kind of image, but so far all i’ve found (material.map) puts the whole image on all faces.
related: is there anything written up on creating asset packs, or any editable examples?
thanks …
r
@RonJeffries - there are several examples of a die object from code, a search for Rubic cubes may help. Conversely if you search for a sky box - they use images viewed from the inside and the texture images are built in a specific way. All you need to do with the skybox is view it from the outside - if image placement on each face is important you may have to modify each image orientation. I’ll see if I can find a few refs.
@John has a skybox built into Craft - you could start with that.
@RonJeffries Heres something I just put together.
displayMode(FULLSCREEN)
function setup()
noSmooth()
rectMode(CORNER)
img=image(600,100)
setContext(img)
background(0, 0, 0, 255)
fill(255)
rect(0,0,600,100)
fill(0)
ellipse(50,50,20)
ellipse(125,75,20)
ellipse(175,25,20)
ellipse(525,75,20)
ellipse(550,50,20)
ellipse(575,25,20)
ellipse(425,75,20)
ellipse(425,25,20)
ellipse(475,75,20)
ellipse(475,25,20)
ellipse(350,50,20)
ellipse(325,75,20)
ellipse(325,25,20)
ellipse(375,75,20)
ellipse(375,25,20)
ellipse(225,75,20)
ellipse(250,75,20)
ellipse(275,75,20)
ellipse(225,25,20)
ellipse(250,25,20)
ellipse(275,25,20)
setContext()
assert(OrbitViewer, "Please include Cameras (not Camera) as a dependency")
scene = craft.scene()
m = scene:entity()
m.model = craft.model.cube(vec3(1,1,1))
m.material = craft.material("Materials:Specular")
m.material.map = img
uvs1={}
c=0
for x=1,6 do
table.insert(uvs1,vec2(c/6,0))
table.insert(uvs1,vec2((c+1)/6,0))
table.insert(uvs1,vec2((c+1)/6,1))
table.insert(uvs1,vec2(c/6,1))
c=c+1
end
m.model.uvs=uvs1
viewer = scene.camera:add(OrbitViewer, vec3(0), 10, 0, 2000)
viewer.camera.farPlane=3000
end
function update(dt)
scene:update(dt)
end
function draw()
update(DeltaTime)
scene:draw()
sprite(img,WIDTH/2,HEIGHT-100)
end
sweet, and very clear.
questions: how did you find member table uvs, and how did you figure out the cube uv mapping was in that order?
thanks!!
hmm, also nice that it didn’t have to be done in triangles 
@Bri_G hm, never thought to search for anything that specific, was searching for more general terms. guess i better up my search game. thanks!
@dave1707 - neat and fast response, is this another project to you library?
p.s. Am I right and you don’t need to add Craft as a dependency now - totally forgot since haven’t used Craft for ages - hence my interest now.
@RonJeffries If you look at the reference under Craft, Craft.model, you’ll see the different tables and what they’re for. As for the mapping order, it was mostly by trial and error when Craft first came out. I spent a lot of time trying to figure out how to put a texture on a Craft.sphere before I was able to do it.
@Bri_G It’s in my library now. I copied code from a different project and then created the dice strip to wrap the cube.
The above code could be modified to use a sky box, an image in the shape of a cross to wrap a cube.
@dave1707 - that was the thoughts going through my head when I saw your code and ran it. I spent quite a long time building up sky texture boxes on graphic design programs to produce skyboxes - that’s where I found out about orientation of each face on the texture.
@Bri_G Heres code that will use a sky box. I didn’t pull one in, but they can be found if you search for sky box. I created my own skybox shape.
displayMode(FULLSCREEN)
function setup()
rectMode(CORNER)
noSmooth()
img=image(400,300)
setContext(img)
background(0, 0, 0, 255)
for x=0,3 do
fill(math.random(255),math.random(255),math.random(255))
rect(x*100,1*100,100,100)
end
fill(math.random(255),math.random(255),math.random(255))
rect(100,0,100,100)
fill(math.random(255),math.random(255),math.random(255))
rect(100,200,100,100)
fill(255)
text("front",150,150)
text("left",50,150)
text("right",250,150)
text("back",350,150)
text("top",150,250)
text("bottom",150,50)
setContext()
assert(OrbitViewer, "Please include Cameras (not Camera) as a dependency")
scene = craft.scene()
v=scene.camera:add(OrbitViewer, vec3(0,0,0), 60, 0, 200)
createCube()
end
function createCube()
ww=scene:entity()
ww.position=vec3(0,-7,0)
ww.model = craft.model.cube(vec3(10,10,10))
ww.material = craft.material("Materials:Standard")
ww.material.map = img
ww.model.uvs=
{ vec2(0,2/3),vec2(1/4,2/3),vec2(1/4,1/3),vec2(0,1/3),
vec2(3/4,2/3),vec2(1,2/3),vec2(1,1/3),vec2(3/4,1/3),
vec2(1/2,2/3),vec2(3/4,2/3),vec2(3/4,1/3),vec2(1/2,1/3),
vec2(1/4,2/3),vec2(1/2,2/3),vec2(1/2,1/3),vec2(1/4,1/3),
vec2(1/4,1),vec2(1/2,1),vec2(1/2,2/3),vec2(1/4,2/3),
vec2(1/2,0),vec2(1/4,0),vec2(1/4,1/3),vec2(1/2,1/3) }
end
function draw()
update(DeltaTime)
scene:draw()
sprite(img,WIDTH/2,HEIGHT-200)
end
function update(dt)
scene:update(dt)
end
neat, dave, thanks again. i think i need to think more about how UVs map, the vertex focus doesn’t fit my mental model from blender, which is probably wrong.
now i gotta look for the sphere mapping.
thanks again.
@RonJeffries Look at the link below. My code for a textured sphere is near the bottom. You can zoom inside the sphere and view it there also.
https://codea.io/talk/discussion/9133/craft-sphere-texture#latest
thanks!
@dave1707 really nice example and great entry point. Trying to make the cube(s) semi transparent by setting
ww.material.opacity=0.1
Which doesn’t seem to do anything. Probably a lot more complicated but wondered if you had pointers. Ideally want to have the surfaces facing the camera rendered semi transparent with the rear inside surfaces fully transparent. Imagine having a 3 x 3 x 3 rubics cube and beIng able to see through the front facing layer
Found the solution
https://codea.io/talk/discussion/8858/transparency-in-craft
ww.material.BlendMode=NORMAL
@dave1707 - just added some simple texturing to your code:
function setup()
rectMode(CORNER)
noSmooth()
spriteMode(CENTER)
img=image(400,300)
setContext(img)
background(0, 0, 0, 255)
sprite("Blocks:Brick Grey",150,50,100,100)
sprite("Blocks:Brick Red",150,150,100,100)
sprite("Blocks:Cotton Tan",150,250,100,100)
sprite("Blocks:Cotton Green",50,150,100,100)
sprite("Blocks:Cactus Inside",250,150,100,100)
sprite("Blocks:Cotton Blue",350,150,100,100)
text("front",150,150)
text("left",50,150)
text("right",250,150)
text("back",350,150)
text("top",150,250)
text("bottom",150,50)
setContext()
assert(OrbitViewer, "Please include Cameras (not Camera) as a dependency")
scene = craft.scene()
v=scene.camera:add(OrbitViewer, vec3(0,0,0), 60, 0, 200)
createCube()
end
Just replace the setup() function.
@West Heres a link to a Craft example where I use opacity. The blendmode is important, glad you found it. It’s the code at the beginning of the discussion.
https://codea.io/talk/discussion/8800/craft-physics-example