void drawAudioBuffer( const audio::Buffer &buffer, const Rectf &bounds, bool drawFrame, const ci::ColorA &color )
{
gl::ScopedGlslProg glslScope( getStockShader( gl::ShaderDef().color() ) );
gl::color( color );
const float waveHeight = bounds.getHeight() / (float)buffer.getNumChannels();
const float xScale = bounds.getWidth() / (float)buffer.getNumFrames();
float yOffset = bounds.y1;
for( size_t ch = 0; ch < buffer.getNumChannels(); ch++ ) {
PolyLine2f waveform;
const float *channel = buffer.getChannel( ch );
float x = bounds.x1;
for( size_t i = 0; i < buffer.getNumFrames(); i++ ) {
x += xScale;
float y = ( 1 - ( channel[i] * 0.5f + 0.5f ) ) * waveHeight + yOffset;
waveform.push_back( vec2( x, y ) );
}
if( ! waveform.getPoints().empty() )
gl::draw( waveform );
yOffset += waveHeight;
}
if( drawFrame ) {
gl::color( color.r, color.g, color.b, color.a * 0.6f );
gl::drawStrokedRect( bounds );
}
}
void drawBuffer(const std::deque<int8_t>& buffer, const Rectf &bounds, bool drawFrame, const ci::ColorA &color, float scaleFactor )
{
gl::ScopedGlslProg glslScope( getStockShader( gl::ShaderDef().color() ) );
gl::color( color );
const float waveHeight = bounds.getHeight();
const float xScale = bounds.getWidth() / (float)buffer.size();
float yOffset = bounds.y1;
PolyLine2f waveform;
float x = bounds.x1;
for( size_t i = 0; i < buffer.size(); i++ ) {
x += xScale;
float y = ( 1.0f - ( buffer[i] * scaleFactor + 0.5f) ) * waveHeight + yOffset;
waveform.push_back( vec2( x, y ) );
}
if( ! waveform.getPoints().empty() )
gl::draw( waveform );
if( drawFrame ) {
gl::color( color.r, color.g, color.b, color.a * 0.6f );
gl::drawStrokedRect( bounds );
}
}
void CinderBoxFunApp::addTriangle(ConstVec &pos)
{
PolyLine2f *points = new PolyLine2f();
points->push_back(Vec2f(TRIANGLE_EDGE_LENGTH * 0.5f, 0));
points->push_back(Vec2f(TRIANGLE_EDGE_LENGTH, TRIANGLE_EDGE_LENGTH));
points->push_back(Vec2f( 0, TRIANGLE_EDGE_LENGTH));
Physics::Polygon *triangle = new Physics::Polygon(pos, points);
addBody(triangle);
}
PolyLine2f calcConvexHull( const PolyLine2f &polyLine )
{
polygon poly;
for( auto ptIt = polyLine.begin(); ptIt != polyLine.end(); ++ptIt )
poly.outer().push_back( boost::geometry::make<boost::geometry::model::d2::point_xy<double> >( ptIt->x, ptIt->y ) );
polygon result;
boost::geometry::convex_hull( poly, result );
return toPolyLine<float>( result );
}
void DeviceTestApp::draw()
{
gl::clear();
gl::color( 0, 0.9f, 0 );
gl::pushMatrices();
gl::translate( 0, mViewYOffset );
if( mMonitor && mMonitor->isEnabled() ) {
const audio::Buffer &buffer = mMonitor->getBuffer();
float padding = 20;
float waveHeight = ((float)getWindowHeight() - padding * 3.0f ) / (float)buffer.getNumChannels();
float yOffset = padding;
float xScale = (float)getWindowWidth() / (float)buffer.getNumFrames();
for( size_t ch = 0; ch < buffer.getNumChannels(); ch++ ) {
PolyLine2f waveform;
const float *channel = buffer.getChannel( ch );
for( size_t i = 0; i < buffer.getNumFrames(); i++ ) {
float x = i * xScale;
float y = ( channel[i] * 0.5f + 0.5f ) * waveHeight + yOffset;
waveform.push_back( vec2( x, y ) );
}
gl::draw( waveform );
yOffset += waveHeight + padding;
}
float volume = mMonitor->getVolume();
Rectf volumeRect( mGainSlider.mBounds.x1, mGainSlider.mBounds.y2 + padding, mGainSlider.mBounds.x1 + mGainSlider.mBounds.getWidth() * volume, mGainSlider.mBounds.y2 + padding + 20 );
gl::drawSolidRect( volumeRect );
}
drawWidgets( mWidgets );
if( mInputDeviceNodeUnderrunFade > 0.0001f ) {
gl::color( ColorA( 0.8f, 0.2f, 0, mInputDeviceNodeUnderrunFade ) );
gl::drawSolidRect( mUnderrunRect );
gl::drawStringCentered( "in underrun", mUnderrunRect.getCenter(), Color::black() );
}
if( mInputDeviceNodeOverrunFade > 0.0001f ) {
gl::color( ColorA( 0.8f, 0.2f, 0, mInputDeviceNodeOverrunFade ) );
gl::drawSolidRect( mOverrunRect );
gl::drawStringCentered( "in overrun", mOverrunRect.getCenter(), Color::black() );
}
if( mOutputDeviceNodeClipFade > 0.0001f ) {
gl::color( ColorA( 0.8f, 0.2f, 0, mOutputDeviceNodeClipFade ) );
gl::drawSolidRect( mClipRect );
gl::drawStringCentered( "out clip", mClipRect.getCenter(), Color::black() );
}
gl::popMatrices();
}
void auMidiApp::draw()
{
// clear out the window with black
gl::clear( Color( 0, 0, 0 ) );
tap.getSamples(sampleBuffer);
PolyLine2f waveform;
for(int i = 0; i < sampleBuffer.size(); i++) {
float x = i / (float)sampleBuffer.size() * (float)getWindowWidth();
float y = ((sampleBuffer[i] + 1) / 2.) * (float)getWindowHeight();
waveform.push_back(Vec2f(x,y));
}
gl::draw(waveform);
}
void HelloWorldApp::setup() {
// We return a value from nvg::createContextGL() in order to remain
// agnostic to how your app is managing memory. Most of the time you'll want
// to either store this value or create a unique/shared_ptr. A unique_ptr
// would be more appropriate here, but we're using make_shared for brevity.
mNanoVG = std::make_shared<nvg::Context>(nvg::createContextGL());
// Load a font
mNanoVG->createFont("roboto", getAssetPath("Roboto-Regular.ttf").string());
// Create triangle PolyLine
int numPts = 3;
for (size_t i = 0; i < numPts; ++i) {
float u = static_cast<float>(i) / static_cast<float>(numPts);
float t = u * M_PI * 2.0f;
mTriangle.push_back({cosf(t), sinf(t)});
}
mTriangle.setClosed();
}
void RetinaSampleApp::mouseDrag( MouseEvent event )
{
mPoints.push_back( event.getPos() );
}
void Triangulator::addPolyLine( const PolyLine2f &polyLine )
{
if( polyLine.size() > 0 )
tessAddContour( mTess.get(), 2, &polyLine.getPoints()[0], sizeof(float) * 2, (int)polyLine.size() );
}