This function specifies how a particle's facing direction is determined.

Syntax

• void SetViewMode(int viewmode=0)

Parameters

• viewmode: - A particle's view mode: 0 = billboard, 1 = lock X-axis, 2 = lock Y-axis, 3 = lock z-axis, 4 = manual facing direction.

Remarks

0: billlboard - In this mode each particle will always face the camera.
1: lock Y-axis - particles will rotate to face the camera in every direction except along the Y-axis.
2: manual facing direction - particles will always face the direction specified by SetFacingDirection

Example

#include "Leadwerks.h"

using namespace Leadwerks;

int main(int argc, const char *argv[])
{
    Leadwerks::Window* window = Leadwerks::Window::Create();
    Context* context = Context::Create(window);
    World* world = World::Create();
    Camera* camera = Camera::Create();
    camera->Move(0, -1, -1);
    camera->SetRotation(-45, 0, 0);

    int viewmode = 0;

    //Create an emitter
    Emitter* emitter = Emitter::Create(100);
    emitter->SetViewMode(viewmode); //set the view mode to manual facing direction
    emitter->SetFacingDirection(0, 1, 0); //set particles to always face up

    while (true)
    {
        if (window->Closed() || window->KeyDown(Key::Escape)) return false;

        Leadwerks::Leadwerks::Time::Update();
        world->Update();
        world->Render();

        //detect key hits to switch view modes
        if (window->KeyHit(Key::Up) && viewmode < 2)
        {
            ++viewmode;
            emitter->SetViewMode(viewmode);
        }
        else if (window->KeyHit(Key::Down) && viewmode > 0)
        {
            --viewmode;
            emitter->SetViewMode(viewmode);
        }

        context->SetBlendMode(Blend::Alpha);
        switch (emitter->GetViewMode())
        {
        case 0:
            context->DrawText("View Mode: Billboard. ", 2, 2);
            break;
        case 1:
            context->DrawText("View Mode: Lock Y-axis. ", 2, 2);
            break;
        case 2:
            context->DrawText("View Mode: Manual Direction. ", 2, 2);
            break;
        }
        context->SetBlendMode(Blend::Solid);

        context->Sync();
    }
}