Added Architektonas drawing file loading/saving infrastructure.

[architektonas] / src / line.cpp

diff --git a/src/line.cpp b/src/line.cpp
index d6169d64a0a593649171c83348a1a2a6341b6047..880a79d60bc48254645794628ce1cb69dbe246fb 100644 (file)
--- a/src/line.cpp
+++ b/src/line.cpp
@@ -4,7 +4,7 @@
 // (C) 2011 Underground Software
 // See the README and GPLv3 files for licensing and warranty information
 //
-// JLH = James L. Hammons <jlhamm@acm.org>
+// JLH = James Hammons <jlhamm@acm.org>
 //
 // WHO  WHEN        WHAT
 // ---  ----------  ------------------------------------------------------------
@@ -20,6 +20,8 @@
 
 #include <QtGui>
 #include "dimension.h"
+#include "painter.h"
+
 
 Line::Line(Vector p1, Vector p2, Object * p/*= NULL*/): Object(p1, p), endpoint(p2),
        draggingLine(false), draggingHandle1(false), draggingHandle2(false), //needUpdate(false),
@@ -42,18 +44,18 @@ Line::~Line()
        // detached.
 }
 
-/*virtual*/ void Line::Draw(QPainter * painter)
+/*virtual*/ void Line::Draw(Painter * painter)
 {
-       painter->setPen(QPen(Qt::red, 2.0, Qt::DotLine));
+       painter->SetPen(QPen(Qt::red, 2.0, Qt::DotLine));
 
        if ((state == OSSelected) || ((state == OSInactive) && hitPoint1))
-               painter->drawEllipse(QPointF(position.x, position.y), 4.0, 4.0);
+               painter->DrawHandle(position);
 
        if ((state == OSSelected) || ((state == OSInactive) && hitPoint2))
-               painter->drawEllipse(QPointF(endpoint.x, endpoint.y), 4.0, 4.0);
+               painter->DrawHandle(endpoint);
 
        if ((state == OSInactive) && !hitLine)
-               painter->setPen(QPen(Qt::black, 1.0, Qt::SolidLine));
+               painter->SetPen(QPen(Qt::black, 1.0, Qt::SolidLine));
 
        if (Object::fixedLength && (draggingHandle1 || draggingHandle2))
        {
@@ -63,16 +65,21 @@ Line::~Line()
                Vector current(point2 - point1);
                Vector v = current.Unit() * length;
                Vector v2 = point1 + v;
-               painter->drawLine((int)point1.x, (int)point1.y, (int)v2.x, (int)v2.y);
+//             painter->DrawLine((int)point1.x, (int)point1.y, (int)v2.x, (int)v2.y);
+               painter->DrawLine(point1, v2);
 
                if (current.Magnitude() > length)
                {
-                       painter->setPen(QPen(QColor(128, 0, 0), 1.0, Qt::DashLine));
-                       painter->drawLine((int)v2.x, (int)v2.y, (int)point2.x, (int)point2.y);
+                       painter->SetPen(QPen(QColor(128, 0, 0), 1.0, Qt::DashLine));
+//                     painter->DrawLine((int)v2.x, (int)v2.y, (int)point2.x, (int)point2.y);
+                       painter->DrawLine(v2, point2);
                }
        }
+// Problem: when drawing at large zoom levels, this throws away precision thus
+//          causing the line to rendered too short. !!! FIX !!! [DONE]
        else
-               painter->drawLine((int)position.x, (int)position.y, (int)endpoint.x, (int)endpoint.y);
+//             painter->DrawLine((int)position.x, (int)position.y, (int)endpoint.x, (int)endpoint.y);
+               painter->DrawLine(position, endpoint);
 }
 
 /*virtual*/ Vector Line::Center(void)
@@ -84,8 +91,7 @@ Line::~Line()
 
 /*virtual*/ bool Line::Collided(Vector point)
 {
-// Can't assume this!
-// Actually, we can, since this is a mouse down event here.
+       // We can assume this, since this is a mouse down event here.
        objectWasDragged = false;
        HitTest(point);
 
@@ -126,7 +132,7 @@ level container, it won't get drawn...
 But we can fix that by making this object call any attached object's (like
 a dimension only) Draw() function... :-/
 */
-                               attachedDimension = new Dimension(&position, &endpoint, this);
+                               attachedDimension = new Dimension(&position, &endpoint, DTLinear, this);
 
                                if (parent != NULL)
                                        parent->Add(attachedDimension);
@@ -273,6 +279,10 @@ software currently out there: the GUI will try to do the right thing, most of th
                        // Here we calculate the component of the current vector along the fixed angle.
                        // A_compB = (A . Bu) * Bu
                        double magnitudeAlongB = Vector::Dot(Vector(point2 - point1), angle);
+/*
+Actually, this isn't quite right. What we want to do is look for the intersection along either
+the horizontal line or vertical line that intersects from the current mouse position.
+*/
 
                        if (draggingHandle1)
                                position = endpoint + (angle * magnitudeAlongB);
@@ -350,6 +360,18 @@ about keeping track of old states...
                state = oldState;
 }
 
+// Check to see if the point passed in coincides with any we have. If so, return a
+// pointer to it; otherwise, return NULL.
+/*virtual*/ Vector * Line::GetPointAt(Vector v)
+{
+       if (v == position)
+               return &position;
+       else if (v == endpoint)
+               return &endpoint;
+
+       return 0;
+}
+
 #if 0
 void Line::SetDimensionOnPoint1(Dimension * dimension)
 {
@@ -372,7 +394,7 @@ void Line::SetDimensionOnLine(Dimension * dimension/*=NULL*/)
        // If they don't pass one in, create it for the caller.
        if (dimension == NULL)
        {
-               dimension = new Dimension(&position, &endpoint, this);
+               dimension = new Dimension(&position, &endpoint, DTLinear, this);
 
                if (parent)
                        parent->Add(dimension);
@@ -431,12 +453,13 @@ bool Line::HitTest(Point point)
        // simplifies the calculation of the determinant.
 
 //How do we determine distance here? Especially if zoomed in or out???
-#warning "!!! Distances tested for may not be valid if zoomed in or out !!!"
-       if (v1.Magnitude() < 8.0)
+//#warning "!!! Distances tested for may not be valid if zoomed in or out !!!"
+// [FIXED]
+       if ((v1.Magnitude() * Painter::zoom) < 8.0)
                hitPoint1 = true;
-       else if (v2.Magnitude() < 8.0)
+       else if ((v2.Magnitude() * Painter::zoom) < 8.0)
                hitPoint2 = true;
-       else if (distance < 5.0)
+       else if ((distance * Painter::zoom) < 5.0)
                hitLine = true;
 
        return StateChanged();
@@ -497,7 +520,7 @@ rearranging we get:
 t(d1x) - s(d2x) = p2x - p0x
 t(d1y) - s(d2y) = p2y - p0y
 
-Determinant D is ad - bc where the matrix look like:
+Determinant D is ad - bc where the matrix looks like:
 
 a b
 c d