screenToRay doesn’t work

Codea Craft
1

I was trying to use

scene.camera:screenToRay()

yesterday and saw that I was getting errors every single time I used it. Is this a new thing? If not, is it gonna get fixed eventually??

2

screenToRay() takes a vec2() as a parameter.

screenToRay(vec2(5,5))

3

Here’s an example using screenToRay. Not sure what all the values returned are or what the input parameters do. Move the ball to the center of the screen (white dot) to change the values at the top of the screen. The top numbers might be the position of the camera.


viewer.mode=FULLSCREEN

function setup()
    fill(255)
    assert(OrbitViewer, "Please include Cameras as a dependency")
    
    scene = craft.scene()
    scene.sun.rotation=quat.eulerAngles(20,45,-30)    
    v=scene.camera:add(OrbitViewer,vec3(0,0,0),50,0,1000)       
    
    skyMaterial=scene.sky.material
    skyMaterial.sky=color(158, 202, 223, 255)
    skyMaterial.horizon=color(98, 166, 114, 255)
    
    createSphere(vec3(10,10,10),2)
end

function draw()
    update(DeltaTime)
    scene:draw()
    
    a,b=v.camera:screenToRay(vec2(0,0)) 
    str=string.format("%.2f  %.2f  %.2f",a.x,a.y,a.z) 
    text(str,WIDTH/2,HEIGHT-100)
    str=string.format("%.2f  %.2f  %.2f",b.x,b.y,b.z) 
    text(str,WIDTH/2,HEIGHT-130)
    
    ellipse(WIDTH/2,HEIGHT/2,5) -- draw a center point
end

function update(dt)
    scene:update(dt)
end

function createSphere(p,size)
    local pt=scene:entity()
    pt.position=vec3(p.x,p.y,p.z)
    pt.model = craft.model.icosphere(size,2)
    pt.material = craft.material(asset.builtin.Materials.Specular)
    pt.material.diffuse=color(255,0,0)
end