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//
// "$Id$"
//
// Portable drawing routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2016 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include "../../config_lib.h"
#ifdef FL_CFG_GFX_QUARTZ
/**
\file quartz_vertex.cxx
\brief Portable drawing code for drawing arbitrary shapes with
simple 2D transformations, implemented for OS X Quartz.
*/
#include "Fl_Quartz_Graphics_Driver.h"
#include <FL/fl_draw.H>
#include <FL/x.H>
#include <FL/math.h>
void Fl_Quartz_Graphics_Driver::transformed_vertex(double xf, double yf) {
transformed_vertex0(COORD_T(xf), COORD_T(yf));
}
void Fl_Quartz_Graphics_Driver::vertex(double x,double y) {
transformed_vertex0(COORD_T(x*m.a + y*m.c + m.x), COORD_T(x*m.b + y*m.d + m.y));
}
void Fl_Quartz_Graphics_Driver::end_points() {
if (fl_quartz_line_width_ > 1.5f) CGContextSetShouldAntialias(gc_, true);
for (int i=0; i<n; i++) {
CGContextMoveToPoint(gc_, p[i].x, p[i].y);
CGContextAddLineToPoint(gc_, p[i].x, p[i].y);
CGContextStrokePath(gc_);
}
if (fl_quartz_line_width_ > 1.5f) CGContextSetShouldAntialias(gc_, false);
}
void Fl_Quartz_Graphics_Driver::end_line() {
if (n < 2) {
end_points();
return;
}
if (n<=1) return;
CGContextSetShouldAntialias(gc_, true);
CGContextMoveToPoint(gc_, p[0].x, p[0].y);
for (int i=1; i<n; i++)
CGContextAddLineToPoint(gc_, p[i].x, p[i].y);
CGContextStrokePath(gc_);
CGContextSetShouldAntialias(gc_, false);
}
void Fl_Quartz_Graphics_Driver::end_loop() {
fixloop();
if (n>2) transformed_vertex((COORD_T)p[0].x, (COORD_T)p[0].y);
end_line();
}
void Fl_Quartz_Graphics_Driver::end_polygon() {
fixloop();
if (n < 3) {
end_line();
return;
}
if (n<=1) return;
CGContextSetShouldAntialias(gc_, true);
CGContextMoveToPoint(gc_, p[0].x, p[0].y);
for (int i=1; i<n; i++)
CGContextAddLineToPoint(gc_, p[i].x, p[i].y);
CGContextClosePath(gc_);
CGContextFillPath(gc_);
CGContextSetShouldAntialias(gc_, false);
}
void Fl_Quartz_Graphics_Driver::begin_complex_polygon() {
begin_polygon();
gap_ = 0;
}
void Fl_Quartz_Graphics_Driver::gap() {
while (n>gap_+2 && p[n-1].x == p[gap_].x && p[n-1].y == p[gap_].y) n--;
if (n > gap_+2) {
transformed_vertex((COORD_T)p[gap_].x, (COORD_T)p[gap_].y);
gap_ = n;
} else {
n = gap_;
}
}
void Fl_Quartz_Graphics_Driver::end_complex_polygon() {
gap();
if (n < 3) {
end_line();
return;
}
if (n<=1) return;
CGContextSetShouldAntialias(gc_, true);
CGContextMoveToPoint(gc_, p[0].x, p[0].y);
for (int i=1; i<n; i++)
CGContextAddLineToPoint(gc_, p[i].x, p[i].y);
CGContextClosePath(gc_);
CGContextFillPath(gc_);
CGContextSetShouldAntialias(gc_, false);
}
void Fl_Quartz_Graphics_Driver::circle(double x, double y,double r) {
double xt = transform_x(x,y);
double yt = transform_y(x,y);
double rx = r * (m.c ? sqrt(m.a*m.a+m.c*m.c) : fabs(m.a));
double ry = r * (m.b ? sqrt(m.b*m.b+m.d*m.d) : fabs(m.d));
int llx = (int)rint(xt-rx);
int w = (int)rint(xt+rx)-llx;
int lly = (int)rint(yt-ry);
int h = (int)rint(yt+ry)-lly;
// Quartz warning: circle won't scale to current matrix!
// Last argument must be 0 (counter-clockwise) or it draws nothing under __LP64__ !!!!
CGContextSetShouldAntialias(gc_, true);
CGContextAddArc(gc_, xt, yt, (w+h)*0.25f, 0, 2.0f*M_PI, 0);
(what == POLYGON ? CGContextFillPath : CGContextStrokePath)(gc_);
CGContextSetShouldAntialias(gc_, false);
}
#endif // FL_CFG_GFX_QUARTZ
//
// End of "$Id$".
//
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