void PathSimplificationApp::drawLine(cairo::Context &ctx, Vec2f const &pt1, Vec2f const &pt2, float thickness, Color col)
{
ctx.setLineWidth(thickness);
ctx.setSource(col);
ctx.newSubPath();
ctx.moveTo(pt1.x, pt1.y);
ctx.lineTo(pt2.x, pt2.y);
ctx.closePath();
ctx.stroke();
}
void makePath( cairo::Context &ctx ) const
{
for( int petal = 0; petal < mNumPetals; ++petal ) {
ctx.newSubPath();
float petalAngle = ( petal / (float)mNumPetals ) * 2 * M_PI;
Vec2f outsideCircleCenter = mLoc + Vec2f::xAxis() * cos( petalAngle ) * mRadius + Vec2f::yAxis() * sin( petalAngle ) * mRadius;
Vec2f insideCircleCenter = mLoc + Vec2f::xAxis() * cos( petalAngle ) * mPetalInsideRadius + Vec2f::yAxis() * sin( petalAngle ) * mPetalInsideRadius;
ctx.arc( outsideCircleCenter, mPetalOutsideRadius, petalAngle + M_PI / 2 + M_PI, petalAngle + M_PI / 2 );
ctx.arc( insideCircleCenter, mPetalInsideRadius, petalAngle + M_PI / 2, petalAngle + M_PI / 2 + M_PI );
ctx.closePath();
}
}
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();
}
}