This function calculates normals for a surface.

Syntax

• void UpdateNormals(bool soft=false, float distancetolerance=0.01, float angulartolerance=180.0)

Parameters

• soft: if set to false, the average normal of all connected triangles will be used to calculate normals. Otherwise, an angular threshold algorithm will be used.
• distancetolerance: a tolerance value for the angular threshold algorithm.
• angulartolerance: a tolerance value for the angular threshold algorithm. Edges that are less sharp than this angle will be smoothed.

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->SetRotation(35, 0, 0);
    camera->Move(0, 0, -4);
    Light* light = DirectionalLight::Create();
    light->SetRotation(35, 35, 0);

    //Average normal
    Model* model = Model::Cylinder();
    model->SetColor(1.0, 0.0, 0.0);
    model->SetPosition(-2.0, 0.0, 0.0);
    Surface* surface = model->GetSurface(0);
    surface->UpdateNormals(false);

    //Angular threshold at 180 degrees
    model = Model::Cylinder();
    model->SetColor(0.0, 1.0, 0.0);
    model->SetPosition(0.0, 0.0, 0.0);
    surface = model->GetSurface(0);
    surface->UpdateNormals(true, 0.01, 180);

    //Angular threshold at 25 degrees
    model = Model::Cylinder();
    model->SetColor(0.0, 0.0, 1.0);
    model->SetPosition(2.0, 0.0, 0.0);
    surface = model->GetSurface(0);
    surface->UpdateNormals(true, 0.01, 25);
    while (true)
    {
        if (window->Closed() || window->KeyDown(Key::Escape)) return false;

        Leadwerks::Time::Update();
        world->Update();
        world->Render();
        context->Sync();
    }
    return 0;
}