void WarpPerspective::draw( bool controls )
{
// only draw grid while editing
if( isEditModeEnabled() ) {
gl::pushModelMatrix();
gl::multModelMatrix( getTransform() );
glLineWidth( 1.0f );
glHint( GL_LINE_SMOOTH_HINT, GL_NICEST );
gl::ScopedColor color( Color::white() );
for( int i = 0; i <= 1; i++ ) {
float s = i / 1.0f;
gl::drawLine( vec2( s * (float) mWidth, 0.0f ), vec2( s * (float) mWidth, (float) mHeight ) );
gl::drawLine( vec2( 0.0f, s * (float) mHeight ), vec2( (float) mWidth, s * (float) mHeight ) );
}
gl::drawLine( vec2( 0.0f, 0.0f ), vec2( (float) mWidth, (float) mHeight ) );
gl::drawLine( vec2( (float) mWidth, 0.0f ), vec2( 0.0f, (float) mHeight ) );
gl::popModelMatrix();
if( controls ) {
// draw control points
for( int i = 0; i < 4; i++ )
drawControlPoint( toVec2f( mDestination[i] ), i == mSelected );
}
}
}
void WarpPerspectiveBilinear::draw(bool controls)
{
// apply perspective transform
gl::pushModelView();
gl::multModelView( mWarp->getTransform() );
// draw bilinear warp
WarpBilinear::draw(false);
// restore transform
gl::popModelView();
// draw edit interface
if( isEditModeEnabled() ) {
if(controls) {
// draw control points
for(unsigned i=0;i<mPoints.size();++i)
drawControlPoint( getControlPoint(i) * mWindowSize, mSelected==i );
}
}
}
void
drawPath(e2dPath* path) {
glBindTexture(GL_TEXTURE_2D, 0);
e2dPoint startPointOfSubPath;
e2dPoint currentPoint;
glBindTexture(GL_TEXTURE_2D, 0);
glColor4ub(255, 128, 128, 255);
e2dPathElement* pathElem;
e2dPathPoint* point;
e2dPathCurve* curve;
e2dPathElementIterator iter = e2dPathGetElementIterator(path);
while(e2dPathElementIteratorHasNext(&iter)) {
pathElem = e2dPathElementIteratorNext(&iter);
switch(pathElem->type)
{
case(E2D_PATHPOINT):
point = (e2dPathPoint*)pathElem;
switch(pathElem->controlType)
{
case(E2D_START_SUBPATH):
glBegin(GL_LINE_STRIP);
startPointOfSubPath = point->point;
glVertex3f(point->point.x, point->point.y, 5.0f);
currentPoint = point->point;
break;
case(E2D_END_SUBPATH):
glVertex3f(point->point.x, point->point.y, 5.0f);
glEnd();
currentPoint = point->point;
break;
case(E2D_END_SUBPATH_LOOP):
glVertex3f(point->point.x, point->point.y, 5.0f);
glVertex3f(startPointOfSubPath.x,
startPointOfSubPath.y,
2.5f);
currentPoint = startPointOfSubPath;
glEnd();
break;
default:
glVertex3f(point->point.x, point->point.y, 5.0f);
currentPoint = point->point;
}
break;
case(E2D_PATHCURVE):
curve = (e2dPathCurve*)pathElem;
glEnd();
drawControlPoint(curve->startPoint, curve->controlPoint1);
drawControlPoint(curve->endPoint, curve->controlPoint2);
glColor4ub(255, 128, 128, 255);
glBegin(GL_LINE_STRIP);
float t;
for (t = 0.0f; t <= 1.0f; t += 0.05f) {
float xt =
powf(1.0f-t, 3.0f) * currentPoint.x +
3.0f * t * powf (1.0f-t, 2.0f) * curve->controlPoint1.x +
3.0f * powf (t, 2.0f) * (1.0f-t) * curve->controlPoint2.x +
powf (t, 3.0f) * curve->endPoint.x;
float yt =
powf (1.0f-t, 3.0f) * currentPoint.y +
3.0f * t * powf (1.0f-t, 2.0f) * curve->controlPoint1.y +
3.0f * powf (t, 2.0f) * (1.0f-t) * curve->controlPoint2.y +
powf (t, 3.0f) * curve->endPoint.y;
glVertex3f(xt, yt, 5.0f);
}
currentPoint = curve->endPoint;
if(pathElem->controlType == E2D_END_SUBPATH)
glEnd();
else {
if(pathElem->controlType == E2D_END_SUBPATH_LOOP)
{
glVertex3f(startPointOfSubPath.x,
startPointOfSubPath.y, 5.0f);
glEnd();
currentPoint = startPointOfSubPath;
}
}
break;
}
}
glColor4ub(255, 255, 255, 255);
drawAxis();
drawRect(path->element.bboxPosition, path->element.bboxWidth, path->element.bboxHeight);
}
