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// Copyright (C) 1999-2018
// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
// For conditions of distribution and use, see copyright notice in "copyright"
#include <tk.h>
#include "basepolygon.h"
#include "fitsimage.h"
BasePolygon::BasePolygon(Base* p, const Vector& ctr,
const Vector& b)
: Marker(p, ctr, 0)
{
}
BasePolygon::BasePolygon(Base* p, const Vector& ctr,
const Vector& b,
const char* clr, int* dsh,
int wth, const char* fnt, const char* txt,
unsigned short prop, const char* cmt,
const List<Tag>& tg, const List<CallBack>& cb)
: Marker(p, ctr, 0, clr, dsh, wth, fnt, txt, prop, cmt, tg, cb)
{
}
BasePolygon::BasePolygon(Base* p, const List<Vertex>& v,
const char* clr, int* dsh,
int wth, const char* fnt, const char* txt,
unsigned short prop, const char* cmt,
const List<Tag>& tg, const List<CallBack>& cb)
: Marker(p, Vector(0,0), 0, clr, dsh, wth, fnt, txt, prop, cmt, tg, cb)
{
// Vertex list is in ref coords
angle = 0;
vertex = v;
// find center
center = Vector(0,0);
vertex.head();
do
center += vertex.current()->vector;
while (vertex.next());
center /= vertex.count();
// vertices are relative
vertex.head();
do
vertex.current()->vector *= Translate(-center) * FlipY(); // no rotation
while (vertex.next());
updateBBox();
}
BasePolygon::BasePolygon(const BasePolygon& a) : Marker(a)
{
vertex = a.vertex;
}
void BasePolygon::createVertex(int which, const Vector& v)
{
// which segment (1 to n)
// v is in ref coords
Matrix mm = bckMatrix();
int seg = which-1;
if (seg>=0 && seg<vertex.count()) {
Vertex* n = new Vertex(v * mm);
vertex.insert(seg,n);
recalcCenter();
updateBBox();
doCallBack(CallBack::EDITCB);
doCallBack(CallBack::MOVECB); // center can change
}
}
void BasePolygon::deleteVertex(int h)
{
if (h>4) {
int hh = h-4-1;
if (vertex.count() > 3) {
Vertex* v = vertex[hh];
if (v) {
vertex.extractNext(v);
delete v;
recalcCenter();
updateBBox();
doCallBack(CallBack::EDITCB);
doCallBack(CallBack::MOVECB); // center can change
}
}
}
}
void BasePolygon::edit(const Vector& v, int h)
{
if (h < 5) {
Vector s1 = v * bckMatrix();
Vector s2 = bckMap(handle[h-1],Coord::CANVAS);
if (s1[0] != 0 && s1[1] != 0 && s2[0] != 0 && s2[1] != 0) {
double a = fabs(s1[0]/s2[0]);
double b = fabs(s1[1]/s2[1]);
double s = a > b ? a : b;
vertex.head();
do
vertex.current()->vector *= Scale(s);
while (vertex.next());
}
updateBBox();
doCallBack(CallBack::EDITCB);
}
else {
moveVertex(v,h);
updateBBox();
doCallBack(CallBack::EDITCB);
doCallBack(CallBack::MOVECB); // center can change
}
}
void BasePolygon::moveVertex(const Vector& v, int h)
{
Matrix mm = bckMatrix();
if (vertex[h-5])
vertex.current()->vector = v * mm;
recalcCenter();
}
void BasePolygon::recalcCenter()
{
// recalculate center
Vector nc;
vertex.head();
do
nc += vertex.current()->vector * Rotate(angle) * FlipY();
while (vertex.next());
nc /= vertex.count();
center += nc;
// update all vertices
vertex.head();
do
vertex.current()->vector -= nc * FlipY() * Rotate(-angle);
while (vertex.next());
}
void BasePolygon::rotate(const Vector& v, int h)
{
if (h < 5)
Marker::rotate(v,h);
else {
// we need to check this here, because we are really rotating
if (canEdit()) {
moveVertex(v,h);
updateBBox();
doCallBack(CallBack::EDITCB);
doCallBack(CallBack::MOVECB); // center can change
}
}
}
void BasePolygon::updateHandles()
{
// generate handles
numHandle = 4 + vertex.count();
if (handle)
delete [] handle;
handle = new Vector[numHandle];
// the first four are our control handles
BBox bb;
vertex.head();
do
bb.bound(vertex.current()->vector);
while (vertex.next());
Vector zz = parent->zoom();
float r = 10/zz.length();
bb.expand(r); // give us more room
handle[0] = fwdMap(bb.ll,Coord::CANVAS);
handle[1] = fwdMap(bb.lr(),Coord::CANVAS);
handle[2] = fwdMap(bb.ur,Coord::CANVAS);
handle[3] = fwdMap(bb.ul(),Coord::CANVAS);
// and the rest are vertices
int i=4;
vertex.head();
do
handle[i++] = fwdMap(vertex.current()->vector,Coord::CANVAS);
while (vertex.next());
}
void BasePolygon::updateCoords(const Matrix& mx)
{
Scale s(mx);
vertex.head();
do
vertex.current()->vector *= s;
while (vertex.next());
Marker::updateCoords(mx);
}
void BasePolygon::listBase(FitsImage* ptr, ostream& str,
Coord::CoordSystem sys, Coord::SkyFrame sky,
Coord::SkyFormat format)
{
Matrix mm = fwdMatrix();
str << type_ << '(';
int first=1;
vertex.head();
do {
if (!first)
str << ',';
first=0;
ptr->listFromRef(str,vertex.current()->vector*mm,sys,sky,format);
} while (vertex.next());
str << ')';
}
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