This function sets a vertex color.

Syntax

• void SetVertexColor(int index, float r, float g, float b, float a)
• void SetVertexColor(int index, const Vec4& color)

Parameters

• index: the surface index to set.
• r: the red component of the color to set.
• g: the green component of the color to set.
• b: the blue component of the color to set.
• a: the alpha component of the color to set.
• color: the color to set.

Returns

This function will increment the reference count of the new material and decrement the reference count of the old material (if they exist).

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);

        //Create a model
        model = Model::Box();

        //Load a material
        Material* material = Material::Load("Materials/Concrete/concrete_dirty.mat");
        model->SetMaterial(material);
        material->Release();
        while (true)
        {
                if (window->Closed() || window->KeyDown(Key::Escape)) return false;

                Leadwerks::Time::Update();

                //===========================================
                //Begin Model Modification
                //===========================================
                Surface* surface = model->GetSurface(0);
                for (int v = 0; v < surface->CountVertices(); v++)
                {
                        Vec3 position = surface->GetVertexPosition(v);
                        Vec3 normal = surface->GetVertexNormal(v);
                        Vec2 texcoords = surface->GetVertexTexCoords(v);
                        Vec4 color = surface->GetVertexColor(v);

                        position = position + normal * Vec3(Math::Sin(Leadwerks::Time::GetCurrent() / 10.0) * 0.005);
                        texcoords += Leadwerks::Time::GetSpeed() / 100.0;
                        color.r = Math::Mod(color.r + Leadwerks::Time::GetSpeed()*0.01, 1);
                        color.g = Math::Mod(color.g + Leadwerks::Time::GetSpeed()*0.011, 1);
                        color.b = Math::Mod(color.b + Leadwerks::Time::GetSpeed()*0.012, 1);

                        surface->SetVertexPosition(v, position);
                        surface->SetVertexNormal(v, normal);
                        surface->SetVertexTexCoords(v, texcoords);
                        surface->SetVertexColor(v, color);
                }

                //Update the surface AABB
                surface->UpdateAABB();

                //Update the model local and global AABBs so the renderer keeps proper track of it
                model->UpdateAABB(Entity::LocalAABB | Entity::GlobalAABB);

                //===========================================
                //End Model Modification
                //===========================================

                world->Update();
                world->Render();
                context->Sync(false);
        }
        return 0;
}