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// bond.cpp - Bond's implementation of functions
#include <qobject.h>
#include <qrect.h>
#include <iostream.h>
#include <math.h>
#include "render2d.h"
#include "drawable.h"
#include "bond.h"
#include "defs.h"
#include "bondedit.h"
Bond::Bond(Render2D *r1, QObject *parent, const char *name)
: Drawable(parent, name)
{
r = r1;
order = 1;
dashed = 0;
highlighted = false;
thick = 1;
wside = 0;
}
bool Bond::Equals(Bond *a) {
if ( (start == a->Start()) && (end == a->End()) ) return true;
if ( (start == a->End()) && (end == a->Start()) ) return true;
return false;
}
bool Bond::WithinRect(QRect n, bool shiftdown) {
if ( DPointInRect(start, n) && DPointInRect(end, n) )
highlighted = true;
else
highlighted = false;
return highlighted;
}
void Bond::Edit() {
cout << "edit bond" << endl;
BondEditDialog be(r, "bond editor", start, end, TYPE_BOND, order, dashed, thick, 0, color);
if ( !be.exec() ) return;
cout << "change" << endl;
color = be.Color();
order = be.Order();
dashed = be.Dash();
thick = be.Thick();
}
void Bond::Render()
{
double myangle, x2, y2, rise, run, lx, ly, cf = 0.02;
QColor c1;
if (highlighted)
c1 = QColor(255,0,0);
else
c1 = color;
// for single bonds
if (order == 1) {
if (dashed > 0)
r->drawLine(start->toQPoint(), end->toQPoint(), 1, c1, 1);
else
r->drawLine(start->toQPoint(), end->toQPoint(), thick, c1);
return;
}
// for stereo_up bonds
if (order == 5) {
r->drawUpLine(start->toQPoint(), end->toQPoint(), c1);
return;
}
// for stereo_down bonds
if (order == 7) {
r->drawDownLine(start->toQPoint(), end->toQPoint(), c1);
return;
}
// for double and triple bonds
myangle = getAngle(start, end);
myangle += 90.0;
myangle = myangle * (M_PI / 180.0);
double offs = start->distanceTo(end) / 25.0;
if (offs > 2.0) offs = 2.0;
//x1 = (int)(cos(myangle) * 2.5 * offs);
//y1 = (int)(sin(myangle) * 2.5 * offs);
x2 = (int)(cos(myangle) * 3.0 * offs);
y2 = (int)(sin(myangle) * 3.0 * offs);
//QPoint sp1(start->x + x2, start->y + y2);
//QPoint ep1(end->x + x2, end->y + y2);
//QPoint sp2(start->x - x2, start->y - y2);
//QPoint ep2(end->x - x2, end->y - y2);
// shorten lines by removing from each end
double bl = start->distanceTo(end);
if (bl < 100.0) cf = 0.03;
if (bl < 51.0) cf = 0.05;
if (bl < 27.0) cf = 0.07;
// find sp1 and ep1
rise = (end->y + y2) - (start->y + y2);
run = (end->x + x2) - (start->x + x2);
lx = start->x + x2 + run * cf;
ly = start->y + y2 + rise * cf;
QPoint sp1((int)lx, (int)ly);
lx = start->x + x2 + run * (1.0 - cf);
ly = start->y + y2 + rise * (1.0 - cf);
QPoint ep1((int)lx, (int)ly);
// find sp2 and ep2
rise = (end->y - y2) - (start->y - y2);
run = (end->x - x2) - (start->x - x2);
lx = start->x - x2 + run * cf;
ly = start->y - y2 + rise * cf;
QPoint sp2((int)lx, (int)ly);
lx = start->x - x2 + run * (1.0 - cf);
ly = start->y - y2 + rise * (1.0 - cf);
QPoint ep2((int)lx, (int)ly);
if (order == 2) {
QPoint sp, ep;
if (wside == 1) {
sp = sp1;
ep = ep1;
} else {
sp = sp2;
ep = ep2;
}
if (dashed > 1)
r->drawLine(start->toQPoint(), end->toQPoint(), 1, c1, 1);
else
r->drawLine(start->toQPoint(), end->toQPoint(), 1, c1);
if (dashed > 0)
r->drawLine(sp, ep, 1, c1, 1);
else
r->drawLine(sp, ep, 1, c1);
return;
}
if (order == 3) {
if (dashed > 2)
r->drawLine(start->toQPoint(), end->toQPoint(), 1, c1, 1);
else
r->drawLine(start->toQPoint(), end->toQPoint(), 1, c1);
if (dashed > 1)
r->drawLine(sp1, ep1, 1, c1, 1);
else
r->drawLine(sp1, ep1, 1, c1);
if (dashed > 0)
r->drawLine(sp2, ep2, 1, c1, 1);
else
r->drawLine(sp2, ep2, 1, c1);
return;
}
}
int Bond::Type(void)
{
return TYPE_BOND;
}
bool Bond::Find(DPoint *target) {
if (start == target) return true;
if (end == target) return true;
return false;
}
// You *did* call Find() first to make sure target is in this Bond...?
DPoint *Bond::otherPoint(DPoint *target) {
if (target == start) return end;
if (target == end) return start;
return 0;
}
DPoint * Bond::FindNearestPoint(DPoint *target, double &dist) {
if (target->distanceTo(start) < target->distanceTo(end)) {
dist = target->distanceTo(start);
return start;
} else {
dist = target->distanceTo(end);
return end;
}
}
Drawable * Bond::FindNearestObject(DPoint *target, double &dist) {
dist = DistanceToLine(start, end, target);
return this;
}
void Bond::setPoints(DPoint *s, DPoint *e) {
start = s;
end = e;
}
QRect Bond::BoundingBox() {
if (highlighted == false)
return QRect( QPoint(999,999), QPoint(0,0) );
int top, bottom, left, right, swp;
top = (int)start->y;
left = (int)start->x;
bottom = (int)end->y;
right = (int)end->x;
if (bottom < top) { swp = top; top = bottom; bottom = swp; }
if (right < left) { swp = left; left = right; right = swp; }
return QRect( QPoint(left,top), QPoint(right,bottom) );
}
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