C++ (Cpp) Context::circle Examples

Example #1

File: Branch.cpp Project: Jornason/Cinder

void Branch::draw( cairo::Context ctx )
{
    if ( mLaunchDelay > 0 )
        return;

    if( ( mLifespan > 0 ) && ( ! mIsRoot ) ) {
        float ageLerp = 1.0 - mLifespan / (float)mTotalLifespan;
        float radius = lerp( mStartEllipseRadius, mEndEllipseRadius, ageLerp );
        ColorA drawColor = lerp( mStartColor, mEndColor, ageLerp );
        ctx.setSourceRgba( drawColor.r, drawColor.g, drawColor.b, 0.075f );
        ctx.circle( mPos, ( 5.0f * mScale + radius * 1.3f ) / 2 );
        ctx.fill();
        ctx.setSource( drawColor );
        ctx.circle( mPos, radius / 2 );
        ctx.fill();
    }

    for( vector<Branch>::iterator blossomIt = mBranches.begin(); blossomIt != mBranches.end(); ++blossomIt ) {
        blossomIt->draw( ctx );
    }
}

Example #2

File: ContinuousPathApp.cpp Project: gregkepler/CinderPathFitter

void ContinuousPathApp::drawCircle(cairo::Context &ctx, Vec2f const &pt, double diameter,  Color col, bool outline)
{
    ctx.setLineWidth(1);
    ctx.setSource( col );
    ctx.newSubPath();
    ctx.circle( pt.x, pt.y, diameter );
    ctx.closePath();
    
    if(outline){
        ctx.stroke();
    }else{
        ctx.fill();   
    }
}