void GpGpuApp::drawInstanced( const gl::VboMeshRef &vbo, size_t count )
{
vbo->enableClientStates();
vbo->bindAllData();
glDrawElementsInstancedARB( vbo->getPrimitiveType(), vbo->getNumIndices(), GL_UNSIGNED_INT, (GLvoid*)( sizeof(uint32_t) * 0 ), count );
gl::VboMesh::unbindBuffers();
vbo->disableClientStates();
}
void Corrdinate_spacesApp::update()
{
vector<Vec3f> positions;
positions.resize(4);
for( int i=0;i<positions.size();i++ ){
Perlin p;
positions[i] = 3. * ( p.dnoise( getElapsedSeconds()+i,
getElapsedSeconds()+i*2,
getElapsedSeconds() ) * 2 - Vec3f(1.,1.,1.) );
}
mVboMesh->bufferPositions(positions);
mVboMesh->unbindBuffers();
}
void ImageHFApp::updateData( ImageHFApp::ColorSwitch whichColor )
{
Surface32f::Iter pixelIter = mImage.getIter();
auto vertPosIter = mVboMesh->mapAttrib3f( geom::POSITION );
auto vertColorIter = mVboMesh->mapAttrib3f( geom::COLOR );
while( pixelIter.line() ) {
while( pixelIter.pixel() ) {
Color color( pixelIter.r(), pixelIter.g(), pixelIter.b() );
float height;
const float muteColor = 0.2f;
// calculate the height based on a weighted average of the RGB, and emphasize either the red green or blue color in each of those modes
switch( whichColor ) {
case kColor:
height = color.dot( Color( 0.3333f, 0.3333f, 0.3333f ) );
break;
case kRed:
height = color.dot( Color( 1, 0, 0 ) );
color *= Color( 1, muteColor, muteColor );
break;
case kGreen:
height = color.dot( Color( 0, 1, 0 ) );
color *= Color( muteColor, 1, muteColor );
break;
case kBlue:
height = color.dot( Color( 0, 0, 1 ) );
color *= Color( muteColor, muteColor, 1 );
break;
}
// the x and the z coordinates correspond to the pixel's x & y
float x = pixelIter.x() - mWidth / 2.0f;
float z = pixelIter.y() - mHeight / 2.0f;
*vertPosIter++ = vec3( x, height * 30.0f, z );
*vertColorIter++ = vec3( color.r, color.g, color.b );
}
}
vertPosIter.unmap();
vertColorIter.unmap();
}
void Corrdinate_spacesApp::setup()
{
vector<Vec3f> positions;
vector<uint32_t> indices;
positions.push_back( Vec3f( -1, 1, 0) ); //0
positions.push_back( Vec3f( -1, -1, 0) ); //1
positions.push_back( Vec3f( 1, -1, 0) ); //2
positions.push_back( Vec3f( 1, 1, 0) ); //3
indices.push_back(1);
indices.push_back(3);
indices.push_back(0);
indices.push_back(1);
indices.push_back(2);
indices.push_back(3);
// mMesh.appendVertices(positions.data(), positions.size());
// mMesh.appendIndices(indices.data(), indices.size());
gl::VboMesh::Layout layout;
layout.setStaticPositions();
layout.setStaticIndices();
mVboMesh = gl::VboMesh::create( 4, 6, layout, GL_TRIANGLES );
mVboMesh->bufferPositions(positions);
mVboMesh->bufferIndices(indices);
mVboMesh->unbindBuffers();
mCam.setPerspective(60, getWindowAspectRatio(), .1, 10000);
mCam.lookAt( Vec3f(0,0,5), Vec3f(0,0,0), Vec3f::yAxis() );
}
void BulletSpheresApp::createBuffers()
{
gl::VboMesh::Layout layout;
layout.attrib( geom::POSITION, 4 ).attrib( geom::NORMAL, 3 ).attrib( geom::TEX_COORD_0, 2 );
mAttributes = gl::VboMesh::create( geom::Sphere().subdivisions( 16 ), {{ layout, nullptr }} );
mMatrices = gl::Vbo::create( GL_ARRAY_BUFFER, (NUM_PARTICLES-2)*sizeof(mat4) );
auto bufferLayout = geom::BufferLayout();
bufferLayout.append( geom::CUSTOM_0, geom::FLOAT, 16, sizeof(mat4), 0, 1 );
mAttributes->appendVbo( bufferLayout , mMatrices );
mRenderSphere = gl::Batch::create( mAttributes, mRenderGlsl );
mShadowSphere = gl::Batch::create( mAttributes, mShadowGlsl );
}
void RandomSpawn::setupParticles()
{
mPointsParticles.clear();
mDataInstance_P = gl::Vbo::create(GL_ARRAY_BUFFER, mPointsParticles, GL_DYNAMIC_DRAW);
mAttribsInstance_P.append(geom::CUSTOM_0, 16, sizeof(CloudParticle), offsetof(CloudParticle, PModelMatrix), 1);
mAttribsInstance_P.append(geom::CUSTOM_1, 1, sizeof(CloudParticle), offsetof(CloudParticle, PSize), 1);
mAttribsInstance_P.append(geom::CUSTOM_2, 4, sizeof(CloudParticle), offsetof(CloudParticle, PColor), 1);
mMesh_P = gl::VboMesh::create(geom::Icosahedron());
mMesh_P->appendVbo(mAttribsInstance_P, mDataInstance_P);
mShader_P = gl::GlslProg::create(loadAsset("shaders/particle.vert"), loadAsset("shaders/particle.frag"));
mBatch_P = gl::Batch::create(mMesh_P, mShader_P, { { geom::CUSTOM_0, "iModelMatrix" }, { geom::CUSTOM_1, "iSize" }, { geom::CUSTOM_2, "iColor" } });
mPerlin = Perlin();
}
void FiretrailApp::update()
{
const auto ray = mCamera.generateRay(getMousePos() - getWindowPos(), getWindowSize());
float result = .0f;
ray.calcPlaneIntersection(vec3(.0f, .0f, 5.0f), vec3(.0f, -2.0f, 1.0f), &result);
mHeadPosition += (ray.calcPosition(result) - mHeadPosition) * .8f;
mSpline.pushPoint(mHeadPosition);
const auto length = mSpline.getLength();
if (length <= .0f) return;
auto mappedPosAttrib = mVboMesh->mapAttrib3f( geom::POSITION );
const auto d = min(mMaxDSlice, length / (float)NUM_SPLINE_NODES);
for (size_t i = 0; i < NUM_SPLINE_NODES; ++i)
{
*mappedPosAttrib++ = mSpline.positionAtLength(d * i);
}
mappedPosAttrib.unmap();
mFps = getAverageFps();
if (mRecordingMovie)
{
if( mMovieExporter && getElapsedFrames() > 1 && getElapsedFrames() < MAX_MOVIE_FRAMES )
{
mMovieExporter->addFrame( copyWindowSurface() );
}
else if( mMovieExporter && getElapsedFrames() >= MAX_MOVIE_FRAMES )
{
endMovieRecording();
}
}
}
void AudioVisualizerApp::setup()
{
// initialize signals
signalChannelEnd = false;
// make a list of valid audio file extensions and initialize audio variables
const char* extensions[] = { "mp3", "wav", "ogg" };
mAudioExtensions = vector<string>( extensions, extensions + 2 );
mAudioPath = getAssetPath( "" );
mIsAudioPlaying = false;
// setup camera
mCamera.setPerspective( 50.0f, 1.0f, 1.0f, 10000.0f );
mCamera.lookAt( vec3( -kWidth / 4, kHeight / 2, -kWidth / 8 ), vec3( kWidth / 4, -kHeight / 8, kWidth / 4 ) );
mCameraUi.setCamera( &mCamera );
// create channels from which we can construct our textures
mChannelLeft = Channel32f( kBands, kHistory );
mChannelRight = Channel32f( kBands, kHistory );
memset( mChannelLeft.getData(), 0, mChannelLeft.getRowBytes() * kHistory );
memset( mChannelRight.getData(), 0, mChannelRight.getRowBytes() * kHistory );
// create texture format (wrap the y-axis, clamp the x-axis)
mTextureFormat.setWrapS( GL_CLAMP_TO_BORDER );
mTextureFormat.setWrapT( GL_REPEAT );
mTextureFormat.setMinFilter( GL_LINEAR );
mTextureFormat.setMagFilter( GL_LINEAR );
mTextureFormat.loadTopDown( true );
// compile shader
try {
mShader = gl::GlslProg::create( loadAsset( "shaders/spectrum.vert" ), loadAsset( "shaders/spectrum.frag" ) );
}
catch( const std::exception& e ) {
console() << e.what() << std::endl;
quit();
return;
}
// create static mesh (all animation is done in the vertex shader)
std::vector<vec3> positions;
std::vector<Colorf> colors;
std::vector<vec2> coords;
std::vector<uint32_t> indices;
for( size_t h = 0; h < kHeight; ++h ) {
for( size_t w = 0; w < kWidth; ++w ) {
// add polygon indices
if( h < kHeight - 1 && w < kWidth - 1 ) {
size_t offset = positions.size();
indices.emplace_back( offset );
indices.emplace_back( offset + kWidth );
indices.emplace_back( offset + kWidth + 1 );
indices.emplace_back( offset );
indices.emplace_back( offset + kWidth + 1 );
indices.emplace_back( offset + 1 );
}
// add vertex
positions.emplace_back( vec3( float( w ), 0, float( h ) ) );
// add texture coordinates
// note: we only want to draw the lower part of the frequency bands,
// so we scale the coordinates a bit
const float part = 0.5f;
float s = w / float( kWidth - 1 );
float t = h / float( kHeight - 1 );
coords.emplace_back( vec2( part - part * s, t ) );
// add vertex colors
colors.emplace_back( Color( CM_HSV, s, 0.5f, 0.75f ) );
}
}
gl::VboMesh::Layout layout;
layout.usage( GL_STATIC_DRAW );
layout.attrib( geom::Attrib::POSITION, 3 );
layout.attrib( geom::Attrib::COLOR, 3 );
layout.attrib( geom::Attrib::TEX_COORD_0, 2 );
mMesh = gl::VboMesh::create( positions.size(), GL_TRIANGLES, { layout }, indices.size(), GL_UNSIGNED_INT );
mMesh->bufferAttrib( geom::POSITION, positions.size() * sizeof( vec3 ), positions.data() );
mMesh->bufferAttrib( geom::COLOR, colors.size() * sizeof( vec3 ), colors.data() );
mMesh->bufferAttrib( geom::TEX_COORD_0, coords.size() * sizeof( vec2 ), coords.data() );
mMesh->bufferIndices( indices.size() * sizeof( uint32_t ), indices.data() );
// play audio using the Cinder FMOD block
FMOD::System_Create( &mFMODSystem );
mFMODSystem->init( 32, FMOD_INIT_NORMAL | FMOD_INIT_ENABLE_PROFILE, NULL );
mFMODSound = nullptr;
mFMODChannel = nullptr;
playAudio( findAudio( mAudioPath ) );
mIsMouseDown = false;
mMouseUpDelay = 30.0;
mMouseUpTime = getElapsedSeconds() - mMouseUpDelay;
// the texture offset has two purposes:
// 1) it tells us where to upload the next spectrum data
// 2) we use it to offset the texture coordinates in the shader for the scrolling effect
mOffset = 0;
}
void FiretrailApp::setup()
{
mCamera.lookAt(vec3(.0f, .0f, -1.0f), vec3(.0f));
mParams = params::InterfaceGl::create( getWindow(), "App parameters", toPixels( ivec2( 200, 300 ) ) );
mParams->addParam("FPS", &mFps);
mParams->addParam("Max D Slice", &mMaxDSlice);
mParams->addParam("Time Factor", &mTimeFactor);
mParams->addParam("Gain", &mGain ).updateFn( [this] { mGlsl->uniform("gain", mGain);} );
mParams->addParam("Lacunarity", &mLacunarity).updateFn( [this] { mGlsl->uniform("lacunarity", mLacunarity);} );
mParams->addParam("Magnitude", &mMagnitude ).updateFn( [this] { mGlsl->uniform("magnitude", mMagnitude);} );
mParams->addParam("Frag Mul", &mFragMul ).updateFn( [this] { mGlsl->uniform("fragMul", mFragMul);} );
mParams->addParam("Noise Scale", &mNoiseScale).updateFn( [this] { mGlsl->uniform("noiseScale", mNoiseScale);} );
mParams->addParam("Layer Offset", &mLayerOffset).updateFn( [this] { mGlsl->uniform("layerOffset", mLayerOffset);} );
mParams->addButton("Start Recording", [this]
{
if (!mRecordingMovie) startMovieRecording();
});
mParams->addButton("End Recording", [this]
{
if (mRecordingMovie) endMovieRecording();
});
gl::Texture::Format mTexFormat;
mTexFormat.magFilter( GL_LINEAR ).minFilter( GL_LINEAR ).internalFormat( GL_RGBA );//.wrap(GL_REPEAT);
mFireTex = gl::Texture::create( loadImage( loadAsset( "flame6.png" ) ), mTexFormat );
mTexFormat.wrap(GL_REPEAT);
mNoiseTex = gl::Texture::create( loadImage( loadAsset( "nzw.png" ) ), mTexFormat );
mGlsl = gl::GlslProg::create(gl::GlslProg::Format()
.vertex( loadAsset( "fire.vert" ) )
.fragment( loadAsset( "fire.frag" ) )
.geometry( loadAsset( "fire.geom" )).attrib( geom::CUSTOM_0, "vSize" ) );
mGlsl->uniform("fireTex", 0);
mGlsl->uniform("noiseTex", 1);
mGlsl->uniform("fragMul", mFragMul);
mGlsl->uniform("gain", mGain);
mGlsl->uniform("magnitude", mMagnitude);
mGlsl->uniform("lacunarity", mLacunarity);
mGlsl->uniform("noiseScale", mNoiseScale);
mGlsl->uniform("layerOffset", mLayerOffset);
// compute texture coordinates
vector<float> amp( NUM_SPLINE_NODES );
amp.resize(NUM_SPLINE_NODES);
for (size_t i = 0; i < NUM_SPLINE_NODES; ++i)
{
const auto t = (float)i / (float)(NUM_SPLINE_NODES - 1);
amp[i] = 1.0f - easeInOutSine(t);
}
mVboMesh = gl::VboMesh::create( NUM_SPLINE_NODES, GL_POINTS, {
gl::VboMesh::Layout().usage( GL_DYNAMIC_DRAW ).attrib( geom::POSITION, 3 ),
gl::VboMesh::Layout().usage( GL_STATIC_DRAW ).attrib( geom::Attrib::CUSTOM_0, 1 ),
});
mVboMesh->bufferAttrib(geom::Attrib::CUSTOM_0, amp);
mBatch = gl::Batch::create(mVboMesh, mGlsl);
resize();
}