OpenSpace/modules/iswa/rendering/textureplane.cpp

// /*****************************************************************************************
//  *                                                                                       *
//  * OpenSpace                                                                             *
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//  * Copyright (c) 2014-2016                                                               *
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#include <modules/iswa/rendering/textureplane.h>
#include <openspace/engine/openspaceengine.h>
#include <openspace/rendering/renderengine.h>
#include <ghoul/filesystem/filesystem>
#include <ghoul/io/texture/texturereader.h>
#include <ghoul/opengl/programobject.h>
#include <ghoul/opengl/texture.h>
#include <ghoul/opengl/textureunit.h>
#include <modules/kameleon/include/kameleonwrapper.h>
#include <openspace/scene/scene.h>
#include <openspace/scene/scenegraphnode.h>
#include <openspace/util/time.h>
#include <openspace/util/spicemanager.h>
#include <openspace/util/time.h>

namespace {
	const std::string _loggerCat = "TexutePlane";
}

namespace openspace {

// TexturePlane::TexturePlane(int cygnetId, std::string path) 
// 	:CygnetPlane(cygnetId, path)
// 	,_futureTexture(nullptr)
// {
// 	_id = id();
// 	setName("TexturePlane" + std::to_string(_id));
// 	registerProperties();
// }

TexturePlane::TexturePlane(std::shared_ptr<Metadata> data) 
	:CygnetPlane(data)
	,_futureTexture(nullptr)
{
	_id = id();
	setName("TexturePlane" + std::to_string(_id));
	registerProperties();
}


TexturePlane::~TexturePlane(){}


bool TexturePlane::initialize(){
	setParent();
    createPlane();
    createShader();

	updateTexture();
    return isReady();
}

bool TexturePlane::deinitialize(){
	_parent = nullptr;
    unregisterProperties();
    destroyPlane();
    destroyShader();

    std::remove(absPath(_data->path).c_str());

	return true;
}

void TexturePlane::render(){
	psc position = _parent->worldPosition();
	glm::mat4 transform = glm::mat4(1.0);
	transform = glm::inverse(OsEng.renderEngine().camera()->viewRotationMatrix());

	float textureRatio = (float (_texture->height()/float(_texture->width())));
	transform = glm::scale(transform, glm::vec3(1, textureRatio, 1));

	glm::mat4 rotx = glm::rotate(transform, static_cast<float>(M_PI_2), glm::vec3(1, 0, 0));
	glm::mat4 roty = glm::rotate(transform, static_cast<float>(M_PI_2), glm::vec3(0, 1, 0));
	// glm::mat4 rot = glm::mat4(1.0);
/*	for (int i = 0; i < 3; i++){
		for (int j = 0; j < 3; j++){
			transform[i][j] = static_cast<float>(_stateMatrix[i][j]);
		}
	}*/

	//transform = transform * roty * rotx;
	//position += transform*glm::vec4(-_pscOffset.x, _pscOffset.z, _pscOffset.y, _pscOffset.w); 

	// transform = glm::rotate(transform, _roatation.value()[0], glm::vec3(1,0,0));
	// transform = glm::rotate(transform, _roatation.value()[1], glm::vec3(0,1,0));
	// transform = glm::rotate(transform, _roatation.value()[2], glm::vec3(0,0,1));

	// Activate shader
	_shader->activate();
	glEnable(GL_ALPHA_TEST);
	glDisable(GL_CULL_FACE);
	_shader->setUniform("ViewProjection", OsEng.renderEngine().camera()->viewProjectionMatrix());
	_shader->setUniform("ModelTransform", transform);
	setPscUniforms(_shader.get(), OsEng.renderEngine().camera(), position);

	ghoul::opengl::TextureUnit unit;
	unit.activate();
	_texture->bind();
	_shader->setUniform("texture1", unit);

	glBindVertexArray(_quad);
	glDrawArrays(GL_TRIANGLES, 0, 6);
	glEnable(GL_CULL_FACE);
	
	_shader->deactivate();

}

void TexturePlane::update(){
	if(_planeIsDirty)
		createPlane();

	_time = Time::ref().currentTime();
	_stateMatrix = SpiceManager::ref().positionTransformMatrix("GALACTIC", _data->frame, _time);
    
    _openSpaceUpdateInterval = Time::ref().deltaTime()*_updateInterval;

    if(_openSpaceUpdateInterval){
    	if((_time-_lastUpdateTime) >= _openSpaceUpdateInterval){
    		updateTexture();
    		_lastUpdateTime = _time;
    	}
    }

	if(_futureTexture && _futureTexture->isFinished){
		loadTexture();

		_futureTexture = nullptr;
	}
}


void TexturePlane::updateTexture(){
	std::shared_ptr<DownloadManager::FileFuture> future = ISWAManager::ref().downloadImage(_data->id, absPath(_data->path));
	if(future){
		_futureTexture = future;
	}
}

void TexturePlane::loadTexture() {

		std::unique_ptr<ghoul::opengl::Texture> texture = ghoul::io::TextureReader::ref().loadTexture(absPath(_data->path));

		if (texture) {
			LDEBUG("Loaded texture from '" << absPath(_data->path) << "'");

			texture->uploadTexture();
			// Textures of planets looks much smoother with AnisotropicMipMap rather than linear
			texture->setFilter(ghoul::opengl::Texture::FilterMode::Linear);

            _texture = std::move(texture);
		}
	
}

int TexturePlane::id(){
		static int id = 0;
		return id++;
}

}// namespace openspace