void ShadowMapSample::updateShadowMap()
{
mDepthFbo.bindFramebuffer();
glPolygonOffset( 1.0f, 1.0f );
glEnable( GL_POLYGON_OFFSET_FILL );
glClear( GL_DEPTH_BUFFER_BIT );
glPushAttrib( GL_VIEWPORT_BIT );
glViewport( 0, 0, SHADOW_MAP_RESOLUTION, SHADOW_MAP_RESOLUTION );
gl::pushMatrices();
mLight->setShadowRenderMatrices();
mBackboard.draw();
mTorus.draw();
gl::drawCube( vec3::zero(), vec3( 1, 1, 1 ) );
gl::popMatrices();
glPopAttrib();
glDisable( GL_POLYGON_OFFSET_FILL );
mDepthFbo.unbindFramebuffer();
}
/*
* @Description: drawing all objects in scene here
* @param: none
* @return: none
*/
void Base_ThreeD_ProjectApp::drawTestObjects()
{
//glColor3f(1.0, 0.2, 0.2);
gl::pushMatrices();
glTranslatef(-2.0f, -1.0f, 0.0f);
glRotated(90.0f, 1, 0, 0);
mTorus.draw();
gl::popMatrices();
//glColor3f(0.4, 1.0, 0.2);
gl::pushMatrices();
glTranslatef(0.0f, -1.35f, 0.0f);
mBoard.draw();
gl::popMatrices();
//glColor3f(0.8, 0.5, 0.2);
gl::pushMatrices();
glTranslatef(0.4f, -0.3f, 0.5f);
glScalef(2.0f, 2.0f, 2.0f);
mBox.draw();
gl::popMatrices();
//glColor3f(0.3, 0.5, 0.9);
gl::pushMatrices();
glTranslatef(0.1f, -0.56f, -1.25f);
mSphere.draw();
gl::popMatrices();
}
void ShadowMapSample::draw()
{
gl::clear();
gl::enableDepthWrite();
glEnable( GL_LIGHTING );
updateShadowMap();
gl::enableDepthRead();
glEnable( GL_TEXTURE_2D );
mDepthFbo.bindDepthTexture();
mShader.bind();
mShader.uniform( "shadowTransMatrix", mLight->getShadowTransformationMatrix( *mCamera ) );
if( mLookThroughCamera )
gl::setMatrices( *mCamera );
else
gl::setMatrices( mLight->getShadowCamera() );
mLight->update( *mCamera );
glPushMatrix();
mBackboard.draw();
mTorus.draw();
gl::drawCube( vec3::zero(), vec3( 1, 1, 1 ) );
glPopMatrix();
mShader.unbind();
mDepthFbo.unbindTexture();
// Draw the lighting frustum unless we're looking through it
if( mLookThroughCamera ) {
glDisable( GL_LIGHTING );
glColor3f( 1.0f, 1.0f, 0.1f );
gl::drawFrustum( mLight->getShadowCamera() );
}
if( mDrawDepthMap ) { // there are faster ways to achieve this, but this is a handy way to see the depth map
gl::setMatricesWindow( getWindowSize() );
Surface32f shadowMapSurface( mDepthFbo.getDepthTexture() );
ip::hdrNormalize( &shadowMapSurface );
gl::color( Color::white() );
gl::draw( gl::Texture( shadowMapSurface ), Rectf( 0, 0, 128, 128 ) );
}
}
void ShadowMapSample::setup()
{
glPolygonOffset( 1.0f, 1.0f );
glEnable( GL_LIGHTING );
glEnable( GL_DEPTH_TEST );
mPaused = false;
mLookThroughCamera = true;
mDrawDepthMap = false;
mCamera = new CameraPersp( getWindowWidth(), getWindowHeight(), 45.0f );
mCamera->lookAt( vec3( 5, 5, 5 ), vec3( 0, 0, 0 ) );
mCamera->setPerspective( 45.0f, getWindowAspectRatio(), 0.1f, 100.0f );
mLight = new gl::Light( gl::Light::POINT, 0 );
mLight->lookAt( vec3( 1, 5, 1 ), vec3( 0, 0, 0 ) );
mLight->setAmbient( Color( 0.3f, 0.3f, 0.3f ) );
mLight->setDiffuse( Color( 0.5f, 0.5f, 0.5f ) );
mLight->setSpecular( Color( 0.5f, 0.5f, 0.5f ) );
mLight->setShadowParams( 60.0f, 0.5f, 8.0f );
mLight->update( *mCamera );
mLight->enable();
gl::Material torusMaterial;
torusMaterial.setSpecular( BLUE );
torusMaterial.setDiffuse( BLUE );
torusMaterial.setAmbient( Color( 0.1f, 0.1f, 0.1f ) );
torusMaterial.setShininess( 25.0f );
gl::Material backboardMaterial;
backboardMaterial.setAmbient( RED );
backboardMaterial.setDiffuse( RED );
backboardMaterial.setShininess( 1.0f );
initShadowMap();
mTorus = gl::DisplayList( GL_COMPILE );
mTorus.newList();
gl::drawTorus( 1.0f, 0.3f, 32, 64 );
mTorus.endList();
mTorus.setMaterial( torusMaterial );
mBackboard = gl::DisplayList( GL_COMPILE );
mBackboard.newList();
gl::drawCube( vec3( 0.0f, -2.5f, 0.0f ), vec3( 5.0f, 0.1f, 5.0f ) );
mBackboard.endList();
mBackboard.setMaterial( backboardMaterial );
mShader = gl::GlslProg( loadResource( RES_SHADOWMAP_VERT ), loadResource( RES_SHADOWMAP_FRAG ) );
mShader.bind();
mShader.uniform( "depthTexture", 0 );
}
void RodSoundApp::setup()
{
// std::cout << solveBEM(constants::radius) << "\n\n";
// std::cout << "Expected:\n" << -constants::pi * constants::radius * constants::radius * Mat2e::Identity() << "\n\n";
// Setup scene
cam.setPerspective(40.0, getWindowAspectRatio(), 0.1, 1000.0);
cam.lookAt(eyePos, targetPos, Vec3c(0.0, 1.0, 0.0));
// Setup rendering stuff
spheredl = new gl::DisplayList(GL_COMPILE);
spheredl->newList();
gl::drawSphere(Vec3c::zero(), constants::radius);
spheredl->endList();
cylinderdl = new gl::DisplayList(GL_COMPILE);
cylinderdl->newList();
gl::drawCylinder(constants::radius, constants::radius, 1.0);
cylinderdl->endList();
l = new gl::Light(gl::Light::POINT, 0);
try {
rodTex = loadImage(loadResource(RES_SIM_YARN_TEX));
} catch (ImageIoException e) {
std::cerr << "Error loading textures: " << e.what();
exit(1);
}
// Load and compile shaders
try {
diffuseProg = gl::GlslProg(loadResource(RES_SIM_VERT_GLSL), loadResource(RES_SIM_FRAG_GLSL));
rodProg = gl::GlslProg(loadResource(RES_SIM_VERT_TEX_GLSL), loadResource(RES_SIM_FRAG_TEX_GLSL));
} catch (gl::GlslProgCompileExc e) {
std::cerr << "Error compiling GLSL program: " << e.what();
exit(1);
} catch (ResourceLoadExc e) {
std::cerr << "Error loading shaders: " << e.what();
exit(1);
}
floor.appendVertex(Vec3c(-100.0, 0.0, -100.0));
floor.appendNormal(Vec3c(0.0, 1.0, 0.0));
floor.appendTexCoord(Vec2c(-12.0, -12.0));
floor.appendVertex(Vec3c(100.0, 0.0, -100.0));
floor.appendNormal(Vec3c(0.0, 1.0, 0.0));
floor.appendTexCoord(Vec2c(12.0, -12.0));
floor.appendVertex(Vec3c(100.0, 0.0, 100.0));
floor.appendNormal(Vec3c(0.0, 1.0, 0.0));
floor.appendTexCoord(Vec2c(12.0, 12.0));
floor.appendVertex(Vec3c(-100.0, 0.0, 100.0));
floor.appendNormal(Vec3c(0.0, 1.0, 0.0));
floor.appendTexCoord(Vec2c(-12.0, 12.0));
floor.appendTriangle(0, 1, 2);
floor.appendTriangle(0, 3, 2);
ci::Surface s(4, 4, false);
auto iter = s.getIter();
do {
do {
Vec2i pos = iter.getPos();
unsigned char val = pos.x > 0 && pos.x < 3 && pos.y > 0 && pos.y < 3 ? 100 : 150;
iter.r() = iter.g() = iter.b() = val;
} while (iter.pixel());
} while (iter.line());
floorTex = gl::Texture(s);
floorTex.setMagFilter(GL_NEAREST);
floorTex.setWrap(GL_REPEAT, GL_REPEAT);
// Load the rod
loadDefaultRod(50);
// loadRodFile("");
loadStdEnergies();
PROFILER_START("Total");
}
void RodSoundApp::draw() {
while (running &&
// app::getElapsedSeconds() - tAtLastDraw < 1.0/app::getFrameRate() &&
fe.nextTimestep(c) > 1.0 / (real) SampleRate) {
update();
}
tAtLastDraw = app::getElapsedSeconds();
PROFILER_START("Draw");
// Clear out the window with grey
gl::clear(Color(0.45, 0.45, 0.5));
// Enable alpha blending and depth testing
gl::enableAlphaBlending();
gl::enableDepthRead(true);
gl::enableDepthWrite(true);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Draw framerate counter
gl::setMatricesWindow(getWindowSize());
std::stringstream ss;
ss << getAverageFps();
gl::drawStringRight(ss.str(),
Vec2c(getWindowWidth()-toPixels(10), getWindowHeight()-toPixels(20)),
Color(0.0, 0.0, 0.0),
Font("Arial", toPixels(12)));
// Set projection/modelview matrices
gl::setMatrices(cam);
// Draw the rod and the normal of the bishop frame
for(int i=0; i<r->numEdges(); i++) {
Vec3c p0 = EtoC(r->cur().POS(i));
Vec3c p1 = EtoC(r->cur().POS(i+1));
gl::drawLine(p0, p1);
gl::color(1.0, 1.0, 0.0);
gl::lineWidth(1.0);
Vec3c u = EtoC(r->cur().u[i]);
gl::drawLine((p0+p1)/2.0, (p0+p1)/2.0+u*(p1-p0).length()*2.0);
}
m.apply();
l->setDiffuse(Color::white());
l->setAmbient(Color::white());
l->setPosition(Vec3c(0.0, 50.0, 0.0));
l->enable();
diffuseProg.bind();
for (int i=0; i<r->numCPs(); i++) {
gl::pushModelView();
gl::translate(EtoC(r->cur().POS(i)));
spheredl->draw();
gl::popModelView();
}
diffuseProg.unbind();
rodProg.bind();
floorTex.enableAndBind();
gl::draw(floor);
floorTex.disable();
rodProg.unbind();
// Draw rod edges
rodProg.bind();
rodTex.enableAndBind();
for (int i=0; i<r->numEdges(); i++) {
gl::pushModelView();
Vec3c v = EtoC(r->cur().edge(i).normalized());
gl::translate(EtoC(r->cur().POS(i)));
Quaternion<real> q(Vec3c(0.0, 1.0, 0.0), v);
real angle = acos(std::max((real)-1.0, std::min((real)1.0, (q*Vec3c(-1.0, 0.0, 0.0)).dot(EtoC(r->cur().u[i])))));
if ((q*Vec3c(-1.0, 0.0, 0.0)).dot(EtoC(r->cur().v(i))) > 0.0) angle = -angle;
gl::rotate(Quaternion<real>(v, angle));
gl::rotate(q);
gl::rotate(Vec3c(0.0, r->cur().rot(i)*180.0/constants::pi, 0.0));
gl::scale(1.0, r->cur().edgeLength(i), 1.0);
cylinderdl->draw();
gl::popModelView();
}
rodTex.unbind();
rodProg.unbind();
for (RodEnergy* e : energies) {
e->draw(c.timestep());
}
integrator->draw();
fe.record(c);
PROFILER_STOP("Draw");
}
void ShadowMapSample::update()
{
if( ! mPaused )
mTorus.getModelMatrix().rotate( vec3( 1.0f, 1.0f, 1.0f ).normalized(), 0.05f );
}
/*
* @Description: setup function ( more aesthetic as could be in constructor here )
* @param: none
* @return: none
*/
void Base_ThreeD_ProjectApp::setup()
{
RENDER_MODE = 3;
glEnable( GL_LIGHTING );
glEnable( GL_DEPTH_TEST );
glEnable(GL_RESCALE_NORMAL); //important if things are being scaled as OpenGL also scales normals ( for proper lighting they need to be normalized )
mParams = params::InterfaceGl( "3D_Scene_Base", Vec2i( 225, 125 ) );
mParams.addParam( "Framerate", &mCurrFramerate, "", true );
mParams.addParam( "Eye Distance", &mCameraDistance, "min=-100.0 max=-5.0 step=1.0 keyIncr== keyDecr=-");
mParams.addParam( "Lighting On", &mLightingOn, "key=l");
mParams.addParam( "Show/Hide Params", &mShowParams, "key=x");
mParams.addSeparator();
mCurrFramerate = 0.0f;
mLightingOn = true;
mViewFromLight = false;
mShowParams = true;
//create camera
mCameraDistance = CAM_POSITION_INIT.z;
mEye = Vec3f(CAM_POSITION_INIT.x, CAM_POSITION_INIT.y, CAM_POSITION_INIT.z);
mCenter = Vec3f::zero();
mUp = Vec3f::yAxis();
mCam = new CameraPersp( getWindowWidth(), getWindowHeight(), 180.0f );
mCam->lookAt(mEye, mCenter, mUp);
mCam->setPerspective( 45.0f, getWindowAspectRatio(), 1.0f, 50.0f );
gl::setMatrices( *mCam );
//create light
mLight = new gl::Light( gl::Light::DIRECTIONAL, 0 );
mLight->lookAt( Vec3f(LIGHT_POSITION_INIT.x, LIGHT_POSITION_INIT.y * -1, LIGHT_POSITION_INIT.z), Vec3f( 0, 0, 0 ) );
mLight->setAmbient( Color( 1.0f, 1.0f, 1.0f ) );
mLight->setDiffuse( Color( 1.0f, 1.0f, 1.0f ) );
mLight->setSpecular( Color( 1.0f, 1.0f, 1.0f ) );
mLight->setShadowParams( 100.0f, 1.0f, 20.0f );
mLight->update( *mCam );
mLight->enable();
//create light ref
mLightRef = new gl::Light( gl::Light::DIRECTIONAL, 0 );
mLightRef->lookAt( LIGHT_POSITION_INIT, Vec3f( 0, 0, 0 ) );
mLightRef->setShadowParams( 100.0f, 1.0f, 20.0f );
//DEBUG Test objects
ci::ColorA pink( CM_RGB, 0.84f, 0.49f, 0.50f, 1.0f );
ci::ColorA green( CM_RGB, 0.39f, 0.78f, 0.64f, 1.0f );
ci::ColorA blue( CM_RGB, 0.32f, 0.59f, 0.81f, 1.0f );
ci::ColorA orange( CM_RGB, 0.77f, 0.35f, 0.35f, 1.0f );
gl::Material torusMaterial;
torusMaterial.setSpecular( ColorA( 1.0, 1.0, 1.0, 1.0 ) );
torusMaterial.setDiffuse( pink );
torusMaterial.setAmbient( ColorA( 0.3, 0.3, 0.3, 1.0 ) );
torusMaterial.setShininess( 25.0f );
gl::Material boardMaterial;
boardMaterial.setSpecular( ColorA( 0.0, 0.0, 0.0, 0.0 ) );
boardMaterial.setAmbient( ColorA( 0.3, 0.3, 0.3, 1.0 ) );
boardMaterial.setDiffuse( green );
boardMaterial.setShininess( 0.0f );
gl::Material boxMaterial;
boxMaterial.setSpecular( ColorA( 0.0, 0.0, 0.0, 0.0 ) );
boxMaterial.setAmbient( ColorA( 0.3, 0.3, 0.3, 1.0 ) );
boxMaterial.setDiffuse( blue );
boxMaterial.setShininess( 0.0f );
gl::Material sphereMaterial;
sphereMaterial.setSpecular( ColorA( 1.0, 1.0, 1.0, 1.0 ) );
sphereMaterial.setAmbient( ColorA( 0.3, 0.3, 0.3, 1.0 ) );
sphereMaterial.setDiffuse( orange ) ;
sphereMaterial.setShininess( 35.0f );
//using DisplayLists for simplicity but highly recommend to use VBO's for serious work ( as DisplayLists will be deprecated soon ... and speed difference in now negligible )
mTorus = gl::DisplayList( GL_COMPILE );
mTorus.newList();
gl::drawTorus( 1.0f, 0.3f, 32, 64 );
mTorus.endList();
mTorus.setMaterial( torusMaterial );
mBoard = gl::DisplayList( GL_COMPILE );
mBoard.newList();
gl::drawCube( Vec3f( 0.0f, 0.0f, 0.0f ), Vec3f( 10.0f, 0.1f, 10.0f ) );
mBoard.endList();
mBoard.setMaterial( boardMaterial );
mBox = gl::DisplayList( GL_COMPILE );
mBox.newList();
gl::drawCube( Vec3f( 0.0f, 0.0f, 0.0f ), Vec3f( 1.0f, 1.0f, 1.0f ) );
mBox.endList();
mBox.setMaterial( boxMaterial );
mSphere = gl::DisplayList( GL_COMPILE );
mSphere.newList();
gl::drawSphere( Vec3f::zero(), 0.8f, 30 );
mSphere.endList();
mSphere.setMaterial( sphereMaterial );
//noise texture required for SSAO calculations
mRandomNoise = gl::Texture( loadImage( loadResource( NOISE_SAMPLER ) ) );
initFBOs();
initShaders();
}