1 // circle.cpp: Circle object
3 // Part of the Architektonas Project
4 // (C) 2011 Underground Software
5 // See the README and GPLv3 files for licensing and warranty information
7 // JLH = James Hammons <jlhamm@acm.org>
10 // --- ---------- ------------------------------------------------------------
11 // JLH 03/28/2011 Created this file
12 // JLH 09/26/2011 Added hover effects
13 // JLH 09/26/2011 Major cleanup of this class
23 Circle::Circle(Vector p1, double r, Object * p/*= NULL*/): Object(p1, p), radius(r),
24 draggingEdge(false), draggingCenter(false), hitCenter(false), hitCircle(false)
35 /*virtual*/ void Circle::Draw(Painter * painter)
37 if (state == OSSelected || hitCircle || hitCenter)
38 painter->SetPen(QPen(Qt::red, 2.0, Qt::DotLine));
40 painter->SetPen(QPen(Qt::black, 1.0, Qt::SolidLine));
43 // QBrush brush(Qt::DiagCrossPattern);
44 // brush.setColor(QColor(255, 255, 0));
45 // painter->SetBrush(brush);
46 painter->SetBrush(QBrush(Qt::NoBrush));
49 painter->DrawEllipse(position, radius, radius);
51 // & draw handles (if needed)
52 if (state == OSSelected || hitCenter)
53 painter->DrawHandle(position);
55 if (state == OSSelected && draggingEdge && objectWasDragged)
56 painter->DrawHandle(dragPoint);
58 // If resizing the circle, draw an information panel showing the new radius.
61 QString text = QObject::tr("Radius: %1\nScale: %2%");
62 text = text.arg(radius, 0, 'd', 4).arg(radius / oldRadius * 100.0, 0, 'd', 0);
64 QPen pen = QPen(QColor(0x00, 0xFF, 0x00), 1.0, Qt::SolidLine);
66 painter->SetBrush(QBrush(QColor(0x40, 0xFF, 0x40, 0x9F)));
67 QRectF textRect(10.0, 10.0, 270.0, 70.0); // x, y, w, h
68 painter->DrawRoundedRect(textRect, 7.0, 7.0);
70 textRect.setLeft(textRect.left() + 14);
71 painter->SetFont(*Object::font);
72 pen = QPen(QColor(0x00, 0x5F, 0xDF));
74 painter->DrawText(textRect, Qt::AlignVCenter, text);
76 painter->DrawInformativeText(text);
82 /*virtual*/ Vector Circle::Center(void)
88 /*virtual*/ bool Circle::Collided(Vector point)
90 // Someone told us to fuck off, so we'll fuck off. :-)
94 // We can assume this, since this is a mouse down event here.
95 objectWasDragged = false;
98 // Now that we've done our hit testing on the non-snapped point, snap it if
101 point = SnapPointToGrid(point);
103 draggingCenter = hitCenter;
104 draggingEdge = hitCircle;
106 if (hitCenter || hitCircle)
115 // We didn't hit anything, so deselect this object and report failure to hit
121 /*virtual*/ void Circle::PointerMoved(Vector point)
123 if (selectionInProgress)
125 // Check for whether or not the rect contains this circle
126 // if (selection.normalized().contains(Extents()))
127 if (selection.contains(Extents()))
135 // Hit test tells us what we hit (if anything) through boolean variables. It
136 // also tells us whether or not the state changed.
139 needUpdate = HitStateChanged();
140 objectWasDragged = (draggingEdge | draggingCenter);
142 if (objectWasDragged)
146 radius = Vector::Magnitude(point, position);
147 else if (draggingCenter)
150 // Save this point so the rendering code knows where to draw the handle...
155 /*virtual*/ void Circle::PointerReleased(void)
157 // Mouse went up, so our dragging is done (if any *was* done, that is)
158 draggingEdge = draggingCenter = false;
159 hitCenter = hitCircle = false;
161 // If the object was dragged, then revert to the old state.
162 // Otherwise, we were probably just clicked, and want to stay in the selected state.
163 if (objectWasDragged)
168 /*virtual*/ bool Circle::HitTest(Point point)
171 hitCenter = hitCircle = false;
172 double length = Vector::Magnitude(position, point);
173 //printf("Circle::length = %lf, radius = %lf\n", length, radius);
174 //How to translate this into pixels from Document space???
175 //Maybe we need to pass a scaling factor in here from the caller? That would make sense, as
176 //the caller knows about the zoom factor and all that good kinda crap
178 Document passes in the correct Cartesian coordinates being pointed to by the mouse.
179 So all we have to be concerned with is properly scaling our hot zones/handle sizes,
180 since we generally *don't* want those to scale with the zoom level. ;-)
182 What is going on here?
183 If we're zoomed out to, say, 50%, & our radius is 10.0 (absolute), then on screen
184 the radius will be 5.0. By multiplying the length by the zoom factor, we align our
185 pointed at length with our on screen length.
187 if ((length * Painter::zoom) < 8.0)
189 //wrong: else if ((length < (radius + 2.0)) && (length > (radius - 2.0)))
190 /*NB: The following should be identical to what we have down below, but it doesn't work out that way... :-P */
191 //close, but no else if (((length * Painter::zoom) < ((radius * Painter::zoom) + 2.0)) && ((length * Painter::zoom) > ((radius * Painter::zoom) - 2.0)))
192 //really wrong! else if (((length * Painter::zoom) < (radius + 2.0)) && ((length * Painter::zoom) > (radius - 2.0)))
193 // close again, but sill no else if (((length * Painter::zoom) < ((radius + 2.0) * Painter::zoom)) && ((length * Painter::zoom) > ((radius - 2.0) * Painter::zoom)))
194 else if ((fabs(length - radius) * Painter::zoom) < 2.0)
197 // return HitStateChanged();
198 return (hitCenter || hitCircle ? true : false);
202 /*virtual*/ QRectF Circle::Extents(void)
204 return QRectF(QPointF(position.x - radius, position.y - radius), QPointF(position.x + radius, position.y + radius));
208 void Circle::SaveHitState(void)
210 oldHitCenter = hitCenter;
211 oldHitCircle = hitCircle;
215 bool Circle::HitStateChanged(void)
217 if ((hitCenter != oldHitCenter) || (hitCircle != oldHitCircle))
224 /*virtual*/ void Circle::Enumerate(FILE * file)
226 fprintf(file, "CIRCLE %i (%lf,%lf) %lf\n", layer, position.x, position.y, radius);
230 /*virtual*/ Object * Circle::Copy(void)
232 #warning "!!! This doesn't take care of attached Dimensions !!!"
234 This is a real problem. While having a pointer in the Dimension to this line's points
235 is fast & easy, it creates a huge problem when trying to replicate an object like this.
237 Maybe a way to fix that then, is to have reference numbers instead of pointers. That
238 way, if you copy them, ... you might still have problems. Because you can't be sure if
239 a copy will be persistant or not, you then *definitely* do not want them to have the
240 same reference number.
242 return new Circle(position, radius, parent);
246 /*virtual*/ void Circle::Rotate(Point point, double angle)
248 Point c1 = Geometry::RotatePointAroundPoint(position, point, angle);
253 /*virtual*/ void Circle::Mirror(Point p1, Point p2)
255 Point c1 = Geometry::MirrorPointAroundLine(position, p1, p2);
256 // return new Circle(c1, radius);
261 /*virtual*/ void Circle::Save(void)
268 /*virtual*/ void Circle::Restore(void)