ImposterObject3D.cpp

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#include <tdme/engine/ImposterObject3D.h>
 
#include <string>
#include <vector>
 
#include <tdme/tdme.h>
#include <tdme/engine/Engine.h>
#include <tdme/engine/Object3D.h>
#include <tdme/engine/Partition.h>
#include <tdme/engine/Transformations.h>
 
using std::string;
using std::vector;
 
using tdme::engine::Engine;
using tdme::engine::ImposterObject3D;
using tdme::engine::Object3D;
using tdme::engine::Partition;
using tdme::engine::Transformations;
 
ImposterObject3D::ImposterObject3D(
    const string& id,
    const vector<Model*>& billboardModels
):
    id(id),
    billboardModels(billboardModels)
{
    this->enabled = true;
    this->pickable = false;
    this->contributesShadows = false;
    this->receivesShadows = false;
    this->effectColorMul.set(1.0f, 1.0f, 1.0f, 1.0f);
    this->effectColorAdd.set(0.0f, 0.0f, 0.0f, 0.0f);
 
    billboardObjects.resize(billboardModels.size());
    for (auto i = 0; i < billboardModels.size(); i++) {
        billboardObjects[i] = new Object3D(id + ".bb-" + to_string(i), billboardModels[i]);
        billboardObjects[i]->setParentEntity(this);
    }
 
    billboardObject = billboardObjects[0];
 
    for (auto billboardObject: billboardObjects) billboardObject->setRenderPass(renderPass);
    for (auto billboardObject: billboardObjects) billboardObject->setShader(shaderId);
    for (auto billboardObject: billboardObjects) billboardObject->setDistanceShader(distanceShaderId);
    for (auto billboardObject: billboardObjects) billboardObject->setDistanceShaderDistance(distanceShaderDistance);
}
 
ImposterObject3D::~ImposterObject3D() {
    // delegate to billboard objects
    for (auto billboardObject: billboardObjects) delete billboardObject;
}
 
void ImposterObject3D::setEngine(Engine* engine)
{
    if (this->engine != nullptr) this->engine->deregisterEntity(this);
    this->engine = engine;
    if (engine != nullptr) engine->registerEntity(this);
    for (auto billboardObject: billboardObjects) billboardObject->setEngine(engine);
}
 
void ImposterObject3D::setRenderer(Renderer* renderer)
{
}
 
void ImposterObject3D::fromTransformations(const Transformations& transformations)
{
    Transformations::fromTransformations(transformations);
    // delegate to billboard objects
    auto imposterObjectTransformations = this->getTransformations();
    imposterObjectTransformations.addRotation(Vector3(0.0f, 1.0f, 0.0f), -(360.0f / billboardModels.size()) * 0.5f);
    for (auto billboardObject: billboardObjects) {
        imposterObjectTransformations.setRotationAngle(
            imposterObjectTransformations.getRotationCount() - 1,
            imposterObjectTransformations.getRotationAngle(imposterObjectTransformations.getRotationCount() - 1) + 360.0f / billboardModels.size()
        );
        imposterObjectTransformations.update();
        billboardObject->fromTransformations(imposterObjectTransformations);
    }
    // update entity
    if (parentEntity == nullptr && frustumCulling == true && engine != nullptr && enabled == true) engine->partition->updateEntity(this);
}
 
void ImposterObject3D::update()
{
    Transformations::update();
    // delegate to billboard objects
    auto imposterObjectTransformations = this->getTransformations();
    imposterObjectTransformations.addRotation(Vector3(0.0f, 1.0f, 0.0f), -(360.0f / billboardModels.size()) * 0.5f);
    for (auto billboardObject: billboardObjects) {
        imposterObjectTransformations.setRotationAngle(
            imposterObjectTransformations.getRotationCount() - 1,
            imposterObjectTransformations.getRotationAngle(imposterObjectTransformations.getRotationCount() - 1) + 360.0f / billboardModels.size()
        );
        imposterObjectTransformations.update();
        billboardObject->fromTransformations(imposterObjectTransformations);
    }
    // update entity
    if (parentEntity == nullptr && frustumCulling == true && engine != nullptr && enabled == true) engine->partition->updateEntity(this);
}
 
void ImposterObject3D::setEnabled(bool enabled)
{
    // return if enable state has not changed
    if (this->enabled == enabled) return;
    // frustum if root entity
    if (parentEntity == nullptr) {
        // frustum culling enabled?
        if (frustumCulling == true) {
            // yeo, add or remove from partition
            if (enabled == true) {
                if (engine != nullptr) engine->partition->addEntity(this);
            } else {
                if (engine != nullptr) engine->partition->removeEntity(this);
            }
        }
    }
}
 
bool ImposterObject3D::isFrustumCulling() {
    return frustumCulling;
}
 
void ImposterObject3D::setFrustumCulling(bool frustumCulling) {
    // check if enabled and engine attached
    if (enabled == true && engine != nullptr) {
        // had frustum culling
        if (this->frustumCulling == true) {
            // yep, remove if set to false now
            if (frustumCulling == false) engine->partition->removeEntity(this);
        } else {
            // yep, add if set to true now
            if (frustumCulling == true) engine->partition->addEntity(this);
        }
    }
    this->frustumCulling = frustumCulling;
    // delegate change to engine
    if (engine != nullptr) engine->registerEntity(this);
}
 
void ImposterObject3D::dispose()
{
    // delegate to billboard objects
    for (auto billboardObject: billboardObjects) billboardObject->dispose();
}
 
void ImposterObject3D::initialize()
{
    // delegate to billboard objects
    for (auto billboardObject: billboardObjects) billboardObject->initialize();
}
 
void ImposterObject3D::setEnableEarlyZRejection(bool enableEarlyZRejection) {
    // delegate to billboard objects
    for (auto billboardObject: billboardObjects) billboardObject->setEnableEarlyZRejection(enableEarlyZRejection);
}