Documentation › API Reference › Object › Entity › Emitter

SetFacingDirection

This function manually sets a direction that all particles will face.

Syntax

Remarks

The most common application of this function is to draw particles on the ground facing up. Make sure to change the view mode to manual facing direction SetViewMode

Example

--Create a window
window = Window:Create()
context = Context:Create(window)
world = World:Create()
camera = Camera:Create()
camera:Move(0,0,-3)
local light = DirectionalLight:Create()
light:SetRotation(35,35,0)

--Create an self.self.emitter
emitter = Emitter:Create(1000)
emitter:SetViewMode(2)  --set the view mode to manual facing direction
emitter:SetFacingDirection(0,1,0)  --set particles to always face up

while true do
    if window:Closed() or window:KeyHit(Key.Escape) then return false end

    Time:Update()
    world:Update()
    world:Render()
    
    context:SetBlendMode(Blend.Alpha)
    context:DrawText("facing direction: " .. (emitter:GetFacingDirection()):ToString() ,2,2) 
    
    context:Sync()
end