Light.cpp

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#include <tdme/engine/Light.h>
 
#include <tdme/tdme.h>
#include <tdme/engine/fileio/textures/Texture.h>
#include <tdme/engine/model/Color4.h>
#include <tdme/engine/subsystems/manager/TextureManager.h>
#include <tdme/engine/subsystems/renderer/Renderer.h>
#include <tdme/engine/Engine.h>
#include <tdme/math/Matrix4x4.h>
#include <tdme/math/Vector3.h>
#include <tdme/math/Vector4.h>
 
using tdme::engine::fileio::textures::Texture;
using tdme::engine::model::Color4;
using tdme::engine::subsystems::manager::TextureManager;
using tdme::engine::subsystems::renderer::Renderer;
using tdme::engine::Engine;
using tdme::engine::Light;
using tdme::math::Matrix4x4;
using tdme::math::Vector3;
using tdme::math::Vector4;
 
Light::Light()
{
    this->renderer = nullptr;
    this->id = -1;
    enabled = false;
    ambient.set(0.0f, 0.0f, 0.0f, 1.0f);
    diffuse.set(1.0f, 1.0f, 1.0f, 1.0f);
    specular.set(1.0f, 1.0f, 1.0f, 1.0f);
    position.set(0.0f, 0.0f, 0.0f, 0.0f);
    spotDirection.set(0.0f, 0.0f, -1.0f);
    spotExponent = 0.0f;
    spotCutOff = 180.0f;
    constantAttenuation = 1.0f;
    linearAttenuation = 0.0f;
    quadraticAttenuation = 0.0f;
    renderSource = false;
    sourceSize = 0.25f;
    lightSourceTextureId = 0;
}
 
Light::Light(Renderer* renderer, int32_t id)
{
    this->renderer = renderer;
    this->id = id;
    enabled = false;
    ambient.set(0.0f, 0.0f, 0.0f, 1.0f);
    diffuse.set(1.0f, 1.0f, 1.0f, 1.0f);
    specular.set(1.0f, 1.0f, 1.0f, 1.0f);
    position.set(0.0f, 0.0f, 0.0f, 0.0f);
    spotDirection.set(0.0f, 0.0f, -1.0f);
    spotExponent = 0.0f;
    spotCutOff = 180.0f;
    constantAttenuation = 1.0f;
    linearAttenuation = 0.0f;
    quadraticAttenuation = 0.0f;
    renderSource = false;
    sourceSize = 0.25f;
    lightSourceTextureId = 0;
}
 
void Light::setSourceTexture(Texture* texture) {
    if (lightSourceTexture == texture) return;
    if (lightSourceTexture != nullptr) lightSourceTexture->releaseReference();
    lightSourceTexture = texture;
    lightSourceTextureId = Engine::getInstance()->getTextureManager()->addTexture(lightSourceTexture);
}
 
void Light::dispose() {
    if (lightSourceTexture != nullptr) lightSourceTexture->releaseReference();
}
 
void Light::update(int contextIdx) {
    if (enabled == true) {
        Vector4 lightPositionTransformed;
        Vector4 spotDirection4;
        Vector4 spotDirection4Transformed;
        auto& light = renderer->getLight(contextIdx, id);
        light.enabled = 1;
        light.ambient = ambient.getArray();
        light.diffuse = diffuse.getArray();
        light.position = position.getArray();
        light.spotDirection = spotDirection.getArray();
        light.spotExponent = spotExponent;
        light.spotCosCutoff = static_cast<float>(Math::cos(Math::PI / 180.0f * spotCutOff));
        light.constantAttenuation = constantAttenuation;
        light.linearAttenuation = linearAttenuation;
        light.quadraticAttenuation = quadraticAttenuation;
        light.radius = getRadius();
        renderer->onUpdateLight(contextIdx, id);
    } else {
        auto& light = renderer->getLight(contextIdx, id);
        light.enabled = 0;
        renderer->onUpdateLight(contextIdx, id);
    }
}