osg::Geode* SolarSystem::createPlanet( double radius, const std::string& name, const osg::Vec4& color , const std::string& textureName1, const std::string& textureName2)
{
osg::Geode* geodePlanet = createPlanet( radius, name, color , textureName1);
if( !textureName2.empty() )
{
osg::ref_ptr<osg::Image> image = osgDB::readRefImageFile( textureName2 );
if ( image )
{
osg::StateSet* stateset = geodePlanet->getOrCreateStateSet();
osg::TexEnvCombine* texenv = new osg::TexEnvCombine;
texenv->setCombine_RGB(osg::TexEnvCombine::INTERPOLATE);
texenv->setSource0_RGB(osg::TexEnvCombine::PREVIOUS);
texenv->setOperand0_RGB(osg::TexEnvCombine::SRC_COLOR);
texenv->setSource1_RGB(osg::TexEnvCombine::TEXTURE);
texenv->setOperand1_RGB(osg::TexEnvCombine::SRC_COLOR);
texenv->setSource2_RGB(osg::TexEnvCombine::PRIMARY_COLOR);
texenv->setOperand2_RGB(osg::TexEnvCombine::SRC_COLOR);
stateset->setTextureAttribute( 1, texenv );
osg::Texture2D* tex2d = new osg::Texture2D( image );
tex2d->setWrap( osg::Texture::WRAP_S, osg::Texture::REPEAT );
tex2d->setWrap( osg::Texture::WRAP_T, osg::Texture::REPEAT );
stateset->setTextureAttributeAndModes( 1, tex2d, osg::StateAttribute::ON );
}
}
return( geodePlanet );
}// end SolarSystem::createPlanet
int main()
{
GLFWwindow* window;
if (!glfwInit())
{
printf("Error initializing GLFW\n");
return -1;
}
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, GL_VERSION_MAJOR);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, GL_VERSION_MINOR);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
//glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
glfwWindowHint(GLFW_SAMPLES, 8);
window = glfwCreateWindow(1920, 1080, "Test Window", glfwGetPrimaryMonitor(), NULL);
if (!window)
{
printf("Error creating GLFW window\n");
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
glfwSetKeyCallback(window, key_callback);
glfwSetMouseButtonCallback(window, mouse_button_callback);
glfwSetCursorPosCallback(window, cursor_position_callback);
glfwSetScrollCallback(window, scroll_callback);
if (gl3wInit())
{
printf("Error initializing OpenGL\n");
glfwTerminate();
return -1;
}
printf("OpenGL %s GLSL %s\n", glGetString(GL_VERSION), glGetString(GL_SHADING_LANGUAGE_VERSION));
if (!gl3wIsSupported(GL_VERSION_MAJOR, GL_VERSION_MINOR))
{
printf("OpenGL %i.%i is not supported\n", GL_VERSION_MAJOR, GL_VERSION_MINOR);
glfwTerminate();
return -1;
}
glViewport(0, 0, 1920, 1080);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
GLuint programID = loadShadersvf("shaders/simple.vsh", "shaders/simple.fsh");
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
GLuint vbo;
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
//glBufferData(GL_ARRAY_BUFFER, sizeof(vertex_buffer_data), vertex_buffer_data, GL_STATIC_DRAW);
glBufferData(GL_ARRAY_BUFFER, sizeof(sphere_model), sphere_model, GL_STATIC_DRAW);
GLuint ibo;
glGenBuffers(1, &ibo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(sphere_indices), sphere_indices, GL_STATIC_DRAW);
//glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(index_buffer_data), index_buffer_data, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glDisableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
double timesteps[] = {1, 60, 60 * 60, 60 * 60 * 24, 60 * 60 * 24 * 7, 60 * 60 * 24 * 30, 60 * 60 * 24 * 365};
int timestepCounter = 0;
World world;
world.num_functions = 0;
//Add the functions for gravitational attraction to the world's object list, and have it execute when updateWorld() is called
addFunction(&world, attract, COMPONENT_POSITION | COMPONENT_VELOCITY);
addFunction(&world, move, COMPONENT_POSITION | COMPONENT_VELOCITY);
unsigned int bodies[11];
//Create all the planets with the correct masses, sizes, and velocities
bodies[0] = createStar(&world, "Sun", 0, 0, 0, 0, 0, 0, 1.989 * pow(10, 30), 6.963 * pow(10,8), 1);
bodies[1] = createPlanet(&world, "Mercury", -0.35790 * AU, -0.04240 * AU, -0.11618 * AU,
-0.00000004 * AU, 0.00000003 * AU, 0.00000031 * AU, 3.285 * pow(10,23), 2.44 * pow(10,6), 0.4549, 0.4509, 0.4705);
bodies[2] = createPlanet(&world, "Venus", -0.46075 * AU, -0.03422 * AU, -0.56289 * AU,
-0.00000017 * AU, -0.00000001 * AU, 0.00000014 * AU, 4.867 * pow(10, 24), 6.052 * pow(10,6), 0.4627, 0.568, 0.380);
bodies[3] = createPlanet(&world, "Earth", 0.99542 * AU, 0, 0.01938 * AU,
0.00000001 * AU, 0, -0.00000019 * AU, 5.972 * pow(10, 24), 6.371 * pow(10,6), 0, 0.4, 0.6);
bodies[4] = createPlanet(&world, "Moon", 0.99708 * AU, -0.00016 * AU, 0.02141 * AU,
0.00000001 * AU + 722.66, 0, -0.00000019 * AU - 722.66, 7.348 * pow(10, 22), 1.737 * pow(10,6), 0.4, 0.4, 0.4);
bodies[5] = createPlanet(&world, "Mars", 1.38763 * AU, 0.01755 * AU, -0.79510 * AU,
-0.00000009 * AU, -0.00000001 * AU, -0.00000013 * AU, 6.39 * pow(10, 23), 3.39 * pow(10,6), 0.8157, 0.5294, 0.3922);
bodies[6] = createPlanet(&world, "Jupiter", 5.32462 * AU, 0.11488 * AU, 1.04223 * AU,
0.00000002 * AU, 0, -0.00000008 * AU, 1.898 * pow(10,27), 69.911 * pow(10,6), 0.8824, 0.7961, 0.7412);
bodies[7] = createPlanet(&world, "Saturn", 3.30063 * AU, 0.29595 * AU, -9.47771 * AU,
-0.00000006 * AU, 0, -0.00000002 * AU, 5.683 * pow(10,26), 58.232 * pow(10,6), 0.7843, 0.6392, 0.4314);
bodies[8] = createPlanet(&world, "Uranus", -18.76415 * AU, -0.21783 * AU, 6.83528 * AU,
0.00000002 * AU, 0, 0.00000004 * AU, 8.681 * pow(10,25), 25.362 * pow(10,6), 0.8314, 0.9804, 0.9922);
bodies[9] = createPlanet(&world, "Neptune", -28.07048 * AU, -0.42924 * AU, -10.42730 * AU,
-0.00000002 * AU, 0, 0.0000003 * AU, 1.024 * pow(10,26), 24.622 * pow(10,6), 0.2, 0.2902, 0.7451);
bodies[10] = createPlanet(&world, "Pluto", -8.88081 * AU, 0.86973 * AU, -31.76914 * AU,
-0.00000003 * AU, -0.00000001 * AU, 0.0000001 / 41.0 * AU, 1.309 * pow(10,22), 1.186 * pow(10, 6), 0.7137, 0.6824, 0.6314);
double mat4d_projection[4][4] = MATRIX_IDENTITY_4;
mat4dProjection(M_PI / 2.0, 16.0/9.0, pow(10,6), pow(10,13), mat4d_projection);
unsigned int parent = 3;
Camera camera;
makeCamera(&camera, 0, 0, pow(10, 9), &world, bodies[parent]);
double mat4d_camera[4][4] = MATRIX_IDENTITY_4;
float mat4_camera[4][4];
double sensitivity = 0.005;
printf("Starting main loop\n");
while (!glfwWindowShouldClose(window))
{
clearInput();
glfwPollEvents();
//rotate or zoom out the camera depending on camera movement and scrolling
double dx, dy, dz;
getMouseDelta(&dx, &dy, &dz);
updateCamera(&camera, dx * sensitivity, dy * sensitivity, dz);
if (getClicked())
{
if(++parent > 10) parent = 0;
changeCameraParent(&camera, pow(10, 9), &world, bodies[parent]);
}
timestepCounter += getTimeStepChange();
if (timestepCounter > 6) timestepCounter = 0;
else if (timestepCounter < 0) timestepCounter = 6;
setTimeStep(timesteps[timestepCounter]);
//get the time since the last frame to do proper delta-timing for the gravitational attraction and movement
double delta = timeTick();
updateWorld(&world, delta);
getCameraMatrix(&camera, mat4d_camera);
double modelView[4][4];
mat4dMlt(mat4d_projection, mat4d_camera, modelView);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glUseProgram(programID);
glBindVertexArray(vao);
glEnableVertexAttribArray(0);
//For each of the objects in the world, loop through them and render them if they have a position and radius,
//rendering works by rendering the same sphere over and over, with a different translation and scale
//because all objects in this program are spheres
for (int i = 0; i < WORLD_MAX_ENTITIES; ++i)
{
if (isEntity(&world, i, COMPONENT_POSITION | COMPONENT_RADIUS))
{
/*double pos[4] = {world.position[i].position[0], world.position[i].position[1], world.position[i].position[2], 1};
vec4dMltMat(mat4d_camera, pos, pos);
double distance = vec3dLength(pos);
printf("%i: %f\n", i, distance);
double mat4d_model[4][4] = MATRIX_IDENTITY_4;
double radius = world.radius[i].radius;
double scaleFactor = distance * (1 / pow(radius,2));
printf("Scale factor: %f\n", scaleFactor);
if (scaleFactor > pow(10,-3))
{
printf("Has been scaled\n");
radius = radius / scaleFactor;
}
printf("Radius: %f\n", radius);*/
double mat4d_model[4][4] = MATRIX_IDENTITY_4;
double radius = world.radius[i].radius;
double scale[3] = {radius, radius, radius};
mat4dGenScale(scale, mat4d_model);
mat4dTranslate(world.position[i].position, mat4d_model);
double modelViewProjection[4][4];
mat4dMlt(modelView, mat4d_model, modelViewProjection);
float modelViewProjectionf[4][4];
doubleToSingle(modelViewProjection[0], modelViewProjectionf[0], 16);
double color[3] = {1,1,1};
if (isEntity(&world, i, COMPONENT_COLOR))
{
vec3dSetEqual(world.color[i].color, color);
}
float colorf[3];
doubleToSingle(color, colorf, 3);
GLint colorLoc = glGetUniformLocation(programID, "in_color");
glUniform3fv(colorLoc, 1, colorf);
GLint mvpLoc = glGetUniformLocation(programID, "mvp");
glUniformMatrix4fv(mvpLoc, 1, GL_FALSE, modelViewProjectionf[0]);
glDrawElements(GL_TRIANGLES, sphere_num_indices, GL_UNSIGNED_INT, 0);
}
}
glDisableVertexAttribArray(0);
glBindVertexArray(0);
glfwSwapBuffers(window);
}
glfwDestroyWindow(window);
glfwTerminate();
return 0;
}
bool DemoScene::userStart()
{
// System Tests
//
//
addSystem<RotationForceSystem>(0);
addSystem<MeshRendererSystem>(0);
addSystem<GraphNodeSystem>(100);
addSystem<TrackBallSystem>(150);
addSystem<CameraSystem>(200);
//
//
// end System Test
std::string perModelVars[] =
{
"model"
};
std::string perFrameVars[] =
{
"projection",
"view",
"light",
"time"
};
std::string materialBasic[] =
{
"ambient",
"diffuse",
"specular",
"transmittance",
"emission",
"shininess"
};
OpenGLTools::Shader &s = _engine.getInstance<Renderer>().addShader("MaterialBasic",
"./Shaders/MaterialBasic.vp",
"./Shaders/MaterialBasic.fp");
_engine.getInstance<Renderer>().addUniform("MaterialBasic")
.init(&s, "MaterialBasic", materialBasic);
_engine.getInstance<Renderer>().addUniform("PerFrame")
.init(&s, "PerFrame", perFrameVars);
_engine.getInstance<Renderer>().addUniform("PerModel")
.init(&s, "PerModel", perModelVars);
_engine.getInstance<Renderer>().addShader("earth", "./Shaders/earth.vp", "./Shaders/earth.fp");
_engine.getInstance<Renderer>().addShader("basic", "Shaders/basic.vp", "Shaders/basic.fp", "Shaders/tesselation.gp");
_engine.getInstance<Renderer>().addShader("basicLight", "Shaders/light.vp", "Shaders/light.fp");
_engine.getInstance<Renderer>().addShader("bump", "Shaders/bump.vp", "Shaders/bump.fp");
_engine.getInstance<Renderer>().addShader("fboToScreen", "Shaders/fboToScreen.vp", "Shaders/fboToScreen.fp");
_engine.getInstance<Renderer>().addShader("brightnessFilter", "Shaders/brightnessFilter.vp", "Shaders/brightnessFilter.fp");
_engine.getInstance<Renderer>().addShader("blurY", "Shaders/brightnessFilter.vp", "Shaders/blur1.fp");
_engine.getInstance<Renderer>().getShader("MaterialBasic")->addTarget(GL_COLOR_ATTACHMENT0).setTextureNumber(4).build();
_engine.getInstance<Renderer>().getShader("basic")->addTarget(GL_COLOR_ATTACHMENT0).setTextureNumber(1).build();
_engine.getInstance<Renderer>().getShader("basicLight")->addTarget(GL_COLOR_ATTACHMENT0).setTextureNumber(1).build();
_engine.getInstance<Renderer>().getShader("bump")->addTarget(GL_COLOR_ATTACHMENT0).setTextureNumber(2).build();
_engine.getInstance<Renderer>().getShader("fboToScreen")->addTarget(GL_COLOR_ATTACHMENT0)
.addLayer(GL_COLOR_ATTACHMENT0).build();
_engine.getInstance<Renderer>().getShader("earth")->addTarget(GL_COLOR_ATTACHMENT0).setTextureNumber(4).build();
_engine.getInstance<Renderer>().getShader("brightnessFilter")->addTarget(GL_COLOR_ATTACHMENT1)
.addLayer(GL_COLOR_ATTACHMENT0).build();
_engine.getInstance<Renderer>().getShader("blurY")->addTarget(GL_COLOR_ATTACHMENT2)
.addLayer(GL_COLOR_ATTACHMENT0).addLayer(GL_COLOR_ATTACHMENT1).build();
_engine.getInstance<Renderer>().getUniform("PerFrame")->setUniform("light", glm::vec4(0, 0, 0, 1));
_engine.getInstance<Renderer>().bindShaderToUniform("basicLight", "PerFrame", "PerFrame");
_engine.getInstance<Renderer>().bindShaderToUniform("basicLight", "PerModel", "PerModel");
_engine.getInstance<Renderer>().bindShaderToUniform("basicLight", "MaterialBasic", "MaterialBasic");
_engine.getInstance<Renderer>().bindShaderToUniform("basic", "PerFrame", "PerFrame");
_engine.getInstance<Renderer>().bindShaderToUniform("basic", "PerModel", "PerModel");
_engine.getInstance<Renderer>().bindShaderToUniform("basic", "MaterialBasic", "MaterialBasic");
_engine.getInstance<Renderer>().bindShaderToUniform("earth", "PerFrame", "PerFrame");
_engine.getInstance<Renderer>().bindShaderToUniform("earth", "PerModel", "PerModel");
_engine.getInstance<Renderer>().bindShaderToUniform("earth", "MaterialBasic", "MaterialBasic");
_engine.getInstance<Renderer>().bindShaderToUniform("bump", "PerFrame", "PerFrame");
_engine.getInstance<Renderer>().bindShaderToUniform("bump", "PerModel", "PerModel");
_engine.getInstance<Renderer>().bindShaderToUniform("bump", "MaterialBasic", "MaterialBasic");
_engine.getInstance<Renderer>().bindShaderToUniform("MaterialBasic", "PerFrame", "PerFrame");
_engine.getInstance<Renderer>().bindShaderToUniform("MaterialBasic", "PerModel", "PerModel");
_engine.getInstance<Renderer>().bindShaderToUniform("MaterialBasic", "MaterialBasic", "MaterialBasic");
_engine.getInstance<Resources::ResourceManager>().addResource("model:ball", new Resources::SharedMesh(), "./Assets/ball/ball.obj");
SmartPointer<Resources::Texture> toRepeat = new Resources::Texture();
toRepeat->setWrapMode(GL_REPEAT);
_engine.getInstance<Resources::ResourceManager>().addResource("texture:sun", new Resources::Texture(), "./Assets/SunTexture.tga");
_engine.getInstance<Resources::ResourceManager>().addResource("texture:earth", new Resources::Texture(), "./Assets/EarthTexture.tga");
_engine.getInstance<Resources::ResourceManager>().addResource("texture:earthBump", new Resources::Texture(), "./Assets/EarthTextureBump.tga");
_engine.getInstance<Resources::ResourceManager>().addResource("texture:earthNight", new Resources::Texture(), "./Assets/EarthNightTexture.tga");
_engine.getInstance<Resources::ResourceManager>().addResource("texture:earthClouds", toRepeat, "./Assets/EarthClouds.tga");
_engine.getInstance<Resources::ResourceManager>().addResource("texture:sun", new Resources::Texture(), "./Assets/SunTexture.tga");
_engine.getInstance<Resources::ResourceManager>().addResource("texture:moon", new Resources::Texture(), "./Assets/MoonTexture.tga");
_engine.getInstance<Resources::ResourceManager>().addResource("texture:moonBump", new Resources::Texture(), "./Assets/MoonNormalMap.tga");
_engine.getInstance<Resources::ResourceManager>().addResource("cubemap:space", new Resources::CubeMap(), "./Assets/skyboxSpace");
auto sun = createPlanet(0, 0, glm::vec3(0), glm::vec3(100), "basic", "texture:sun");
auto earth = createPlanet(7, 20, glm::vec3(300, 0, 0), glm::vec3(20), "earth", "texture:earth", "texture:earthNight", "texture:earthClouds", "texture:earthBump");
auto moon = createPlanet(0, 10, glm::vec3(5, 0, 0), glm::vec3(0.5), "bump", "texture:moon", "texture:moonBump");
earth->getComponent<Component::GraphNode>()->getSonsBegin()->get()->getComponent<Component::GraphNode>()->addSon(moon);
// Generating a lot of planet for performance test
//
//
{
unsigned int nbPlanet = 70;
Entity planets[70];
for (unsigned int i = 0; i < nbPlanet; ++i)
{
planets[i] = createPlanet((std::rand() % 200) / 100.0f
, (std::rand() % 200) / 100.0f,
glm::vec3(std::rand() % 300 - 150, std::rand() % 300 - 150, std::rand() % 300 - 150),
glm::vec3(std::rand() % 10 + 10), "basic", "texture:sun");
if (i == 0)
sun->getComponent<Component::GraphNode>()->addSon(planets[i]);
else
planets[i - 1]->getComponent<Component::GraphNode>()->addSon(planets[i]);
}
}
//
//
// END : Generating a lot of planet for performance test
// --
// Setting camera with skybox
// --
auto camera = createEntity();
camera->addComponent<Component::GraphNode>();
auto cameraComponent = camera->addComponent<Component::CameraComponent>();
auto trackBall = camera->addComponent<Component::TrackBall>( *(earth->getComponent<Component::GraphNode>()->getSonsBegin()), 50.0f, 3.0f, 1.0f);
std::string vars[] =
{
"projection",
"view"
};
OpenGLTools::Shader &sky = _engine.getInstance<Renderer>().addShader("cubemapShader", "Shaders/cubemap.vp", "Shaders/cubemap.fp");
_engine.getInstance<Renderer>().getShader("cubemapShader")->addTarget(GL_COLOR_ATTACHMENT0).setTextureNumber(1).build();
_engine.getInstance<Renderer>().addUniform("cameraUniform").
init(&sky, "cameraUniform", vars);
_engine.getInstance<Renderer>().bindShaderToUniform("cubemapShader", "cameraUniform", "cameraUniform");
cameraComponent->attachSkybox("cubemap:space", "cubemapShader");
// Compute shader Tests
//
//
//OpenGLTools::ComputeShader *cs = new OpenGLTools::ComputeShader();
//cs->init(File("../GameEngine/Shaders/test.cp"));
//cs->use();
//glDispatchCompute(512/16, 512/16, 1);
//
//
// End compute shader test
return (true);
}
