void ContinuousPathApp::drawCurves(cairo::Context &ctx, Path2d path, float thickness, Color col)
{
ctx.setLineWidth(thickness);
ctx.setSource(col);
ctx.newSubPath();
int pointIndex = 0;
for (int i=0; i<path.getNumSegments(); i++) {
int segType = path.getSegmentType(i);
// change jumpIndex depending on the type of segment
switch(segType){
case Path2d::CUBICTO:
if(i==0) ctx.moveTo(path.getPoint(pointIndex));
// do a curve to using the next 2 points as the curves and the 3rd as the end point
ctx.curveTo(path.getPoint(pointIndex+1), path.getPoint(pointIndex+2), path.getPoint(pointIndex+3));
pointIndex += 3;
break;
case Path2d::MOVETO:
// don't do anything with this point
ctx.moveTo(path.getPoint(pointIndex));
pointIndex += 0;
break;
default:
pointIndex += 1;
break;
}
}
ctx.stroke();
}
void bsplineApp::drawBSpline( cairo::Context &ctx )
{
if( mPoints.size() > (size_t)mDegree ) {
ctx.setLineWidth( 2.5f );
ctx.setSourceRgb( 1.0f, 0.5f, 0.25f );
ctx.appendPath( Path2d( BSpline2f( mPoints, mDegree, mLoop, mOpen ) ) );
ctx.stroke();
// ctx.fill();
}
}
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 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();
}
}
// Draw each path onto the passed cairo context
void PathSimplificationApp::drawPath(cairo::Context &ctx, SmoothPath *smoothPath, int mode)
{
// initialize the line settings
float thickness = 1.0;
ctx.setLineWidth( 1.0f );
ctx.setLineCap(cairo::LINE_CAP_ROUND);
ctx.setLineJoin(cairo::LINE_JOIN_ROUND);
if(smoothPath->inProgress){
// draw lines point to point
vector<Vec2f> pathPoints = smoothPath->getPathPoints();
for (int i=1; i<pathPoints.size(); i++) {
drawLine(ctx, pathPoints[i-1], pathPoints[i], 1.0, Color(1.0, 0.0, 0.0));
drawCircle(ctx, pathPoints[i], 2, Color(1.0, 0.0, 0.0));
}
}else{
// draw smooth lines
Path2d path = smoothPath->getCurrentPath();
drawCurves(ctx, path, thickness, Color(255.0, 0.0, 0.0));
int pointIndex = 0;
// draw circles at the bezier points
for (int i=0; i<path.getNumSegments(); i++) {
Vec2f c1 = path.getPoint(pointIndex+1);
Vec2f c2 = path.getPoint(pointIndex+2);
Vec2f pt1 = path.getPoint(pointIndex);
Vec2f pt2 = path.getPoint(pointIndex+3);
drawCircle(ctx, c1, 1, Color(1.0f, 1.0f, 0.0f), true);
drawCircle(ctx, c2, 1, Color(0.0f, 1.0f, 1.0f));
drawLine(ctx, c1, pt1, 1, Color(1.0, 1.0, 0.0 ));
drawLine(ctx, c2, pt2, 1, Color(0.0, 1.0, 1.0 ));
pointIndex += 3;
}
}
}
void NodeView::draw(cairo::Context &theG) {
_size = _calculateSize();
cairo::GradientLinear myGradient(0, 0, 0, _size.y);
if(_node->state() == WARNING) {
myGradient.addColorStop(0.15, Colorf(0.518, 0.298, 0.298*0.5));
myGradient.addColorStop(0.85, Colorf(0.898, 0.467, 0.0));
} else if(_node->state() == ERROR) {
myGradient.addColorStop(0.15, Colorf(0.5, 0, 0));
myGradient.addColorStop(0.85, Colorf(0.8, 0, 0));
} else {
myGradient.addColorStop(0.15, Colorf(0.14, 0.12, 0.129));
myGradient.addColorStop(0.85, Colorf(0.227, 0.188, 0.2));
}
Rectf myRect;
myRect.set(0, 0, _size.x, _size.y);
Vec2f myCorrection(0.5, 0.5);
theG.translate(myCorrection);
theG.translate(_position);
theG.setSourceRgb(0.7, 0.7, 0.7);
theG.roundedRectangle(myRect, 2);
theG.setLineWidth(1);
theG.stroke();
theG.translate(Vec2f(-0.5, -0.5));
theG.setSource(myGradient);
theG.roundedRectangle(myRect, 2);
theG.fill();
// for(int i = 0; i < _node->inputs().size(); i++) {
// NodeInputBase *myInput = _node->inputs()[i];
// int myX = _size.x - (i * PIN_WIDTH + (i-1) * PIN_SPACING + PIN_SPACING + PIN_WIDTH);
//
// theG.setSourceRgb(0.8, 0.8, 0.8);
// theG.rectangle(myX - PIN_WIDTH, 0, PIN_WIDTH, PIN_HEIGHT);
// theG.fill();
//
//
//
// }
//
//
//
// for(int i = 0; i < _node->outputs().size(); i++) {
// NodeOutputBase *myOutput = _node->outputs()[i];
//
// int myX = _size.x - (i * PIN_WIDTH + (i-1) * PIN_SPACING + PIN_SPACING + PIN_WIDTH);
//
// theG.setSourceRgb(0.8, 0.8, 0.8);
// theG.rectangle(myX - PIN_WIDTH, _size.y - PIN_HEIGHT, PIN_WIDTH, PIN_HEIGHT);
// theG.fill();
// }
theG.translate(Vec2f(5, _size.y - 5));
theG.setSourceRgb(0.8, 0.8, 0.8);
theG.setFont( _font );
theG.setFontSize( 10 );
theG.showText( _node->name() );
theG.fill();
theG.setSourceRgb(1.0, 0, 0);
theG.flush();
}
// Draw each path onto the passed cairo context
void ContinuousPathApp::drawPath(cairo::Context &ctx, SmoothPath *smoothPath, int mode)
{
// update the drawing points only if the line hasn't been completed
Path2d path = smoothPath->getCurrentPath();
vector<Vec2f> pathPoints = smoothPath->getPathPoints();
vector<int> endPoints = smoothPath->getEndPoints();
if(path.getNumPoints() == 0) return;
// initialize the line settings
float thickness = 1.0;
ctx.setLineWidth( 1.0f );
ctx.setLineCap(cairo::LINE_CAP_ROUND);
ctx.setLineJoin(cairo::LINE_JOIN_ROUND);
Vec2f pt = path.getPoint(0);
// draw bezier line
if (mode != 5) {
// draw the line based on bezier points
drawCurves(ctx, path, thickness, Color(255.0, 0.0, 0.0));
}
// draw circles at each of the original path points
if(mode != 1 && mode != 5){
for (int i=0; i<pathPoints.size(); i++) {
Vec2f pt = pathPoints[i];
drawCircle(ctx, pt, 1, Color( 1.0f, 1.0f, 1.0f ));
}
}
int i;
int pointIndex = 0;
// draw circles at the bezier points
for (i=0; i<path.getNumSegments(); i++) {
int segType = path.getSegmentType(i);
// change jumpIndex depending on the type of segment
switch(segType){
case Path2d::CUBICTO:
{
Vec2f c1 = path.getPoint(pointIndex+1);
Vec2f c2 = path.getPoint(pointIndex+2);
Vec2f pt1 = path.getPoint(pointIndex);
Vec2f pt2 = path.getPoint(pointIndex+3);
if (mode == 2 || mode == 3) {
if(mode == 2){
for(int j=0; j<endPoints.size(); j++){
if(endPoints[j] == pointIndex){
drawCircle(ctx, pt2, 8, Color(0.0f, 1.0f, 1.0f), true);
}
}
}
if(mode == 3){
// draw the control points and tangent lines
drawCircle(ctx, c1, 2, Color(1.0f, 1.0f, 0.0f), true);
drawCircle(ctx, c2, 2, Color(0.0f, 1.0f, 1.0f));
drawLine(ctx, c1, pt1, 1, Color(1.0, 1.0, 0.0 ));
drawLine(ctx, c2, pt2, 1, Color(0.0, 1.0, 1.0 ));
}
drawCircle(ctx, pt2, 2, Color(1.0f, 0.0f, 1.0f));
drawCircle(ctx, pt1, 2, Color(1.0f, 0.0f, 0.0f), true);
}
if (mode == 4) {
drawLine(ctx, pt1, pt2, 1, Color(1.0, 1.0, 1.0 ));
drawCircle(ctx, pt1, 5, Color(1.0, 0.0, 0.0), true);
drawCircle(ctx, pt2, 3, Color(1.0, 0.0, 1.0));
}
pointIndex += 3;
break;
}
case Path2d::MOVETO:
// don't do anything with this point
pointIndex += 0;
break;
default:
pointIndex += 1;
break;
}
}
if (mode== 5) {
// draw a line between the last bezier point and the current point
for (i=1; i<pathPoints.size(); i++) {
drawLine(ctx, pathPoints[i-1], pathPoints[i], 1.0, Color(1.0, 0.0, 0.0));
}
}
}