setLightDir()

Purpose

Set the direction of a light source

Description

Set the direction of a light source to the specified value

Syntax

setLightDir( light, direction )

Arguments

light handle of the light source

direction direction the light source is pointing { x, y, z }

Example

setCamera( { 0, 6, 10 }, { 0, 0, 0 } )
setAmbientLight( { 0.1, 0.1, 0.1 } )
lightDir = { 0, -1, -1 }
light = spotLight( { 0, 4, 4 }, lightDir, white, 50, 2 )

obj = [
    placeObject( cube, { 0, 0, 0 }, { 4, 0.1, 4 } ),
    placeObject( cube, { 0, 1.1, 0 }, { 1, 1, 1 } )
]

setObjectMaterial( obj[0], white, 0, 1 )
setObjectMaterial( obj[1], cyan, 0, 1 )

loop
    c = controls( 0 )
    lightDir += { c.lx, c.ry, -c.ly } * 0.1
    setLightDir( light, lightDir )
    rotateObject( obj[1], { 0, 1, 0 }, 1.0 )
    drawObjects()
    printAt( 0, 0, "Use Joy-Con control sticks to adjust light direction" )
    printAt( 0, 2, "Left Control stick left and right adjusts the X direction: " + lightDir.x )
    printAt( 0, 3, "Left Control stick up and down adjusts the Z direction:    " + lightDir.z )
    printAt( 0, 4, "Right Control stick up and down adjusts the Y direction:   " + lightDir.y )
    update()
repeat

Associated Commands