1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
//
// Portable drawing routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2018 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:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.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/platform.H>
#include <FL/math.h>
void Fl_Quartz_Graphics_Driver::transformed_vertex(double xf, double yf) {
transformed_vertex0(float(xf), float(yf));
}
void Fl_Quartz_Graphics_Driver::vertex(double x,double y) {
transformed_vertex0(float(x*m.a + y*m.c + m.x), float(x*m.b + y*m.d + m.y));
}
void Fl_Quartz_Graphics_Driver::end_points() {
if (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 (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((float)p[0].x, (float)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((float)p[gap_].x, (float)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);
}
void Fl_Quartz_Graphics_Driver::transformed_vertex0(float x, float y) {
if (!n || x != p[n-1].x || y != p[n-1].y) {
if (n >= p_size) {
p_size = p ? 2*p_size : 16;
p = (XPOINT*)realloc((void*)p, p_size*sizeof(*p));
}
p[n].x = x;
p[n].y = y;
n++;
}
}
void Fl_Quartz_Graphics_Driver::fixloop() { // remove equal points from closed path
while (n>2 && p[n-1].x == p[0].x && p[n-1].y == p[0].y) n--;
}
#endif // FL_CFG_GFX_QUARTZ
|
