This function calculates a normal based on the positions of a triangle's vertices. This value will not necessarily be the same as the vertex normals, though the values are likely to be similar.

Syntax

• Vec3 GetTriangleNormal(int index)

Parameters

• index: the index of the triangle, from 0 to Surface::CountTriangles()-1.

Returns

Returns a normal describing the direction in which a triangle's face points.

Example

#include "Leadwerks.h"

using namespace Leadwerks;

Model* model = NULL;

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->SetRotation(35,0,0);
        camera->Move(0,0,-3);
        Light* light = DirectionalLight::Create();
        light->SetRotation(35,35,0);
        
        Model* model = Model::Box();
        model->SetColor(0.0,0.0,1.0);
        Surface* surface = model->GetSurface(0);

        //Print out the triangle normals
        for (int t=0; tCountTriangles(); t++)
        {
                System::Print(surface->GetTriangleNormal(t));
        }
        
        while (true)
        {
                if (window->Closed() || window->KeyDown(Key::Escape)) return false;
        
                Leadwerks::Time::Update();
                world->Update();
                world->Render();
                context->Sync();
        }
        return 0;
}