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 Triangulator::addPolyLine( const PolyLine2f &polyLine )
{
if( polyLine.size() > 0 )
tessAddContour( mTess.get(), 2, &polyLine.getPoints()[0], sizeof(float) * 2, (int)polyLine.size() );
}