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authorYuval Adam <yuv.adm@gmail.com>2014-08-08 14:42:07 +0300
committerYuval Adam <yuv.adm@gmail.com>2014-08-08 14:42:07 +0300
commita6163888f3c56123b1db313743c6147ba498732c (patch)
treeff7d15d991d1d09ba6cbc0cec80924f57445bfdd /third_party/windows/fltk-1.1.10/src/fl_vertex.cxx
parentc3e4c9a25c2910d2d66d52215b3406b13d5b23d5 (diff)
Add third_party libs
Diffstat (limited to 'third_party/windows/fltk-1.1.10/src/fl_vertex.cxx')
-rw-r--r--third_party/windows/fltk-1.1.10/src/fl_vertex.cxx325
1 files changed, 325 insertions, 0 deletions
diff --git a/third_party/windows/fltk-1.1.10/src/fl_vertex.cxx b/third_party/windows/fltk-1.1.10/src/fl_vertex.cxx
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+//
+// "$Id: fl_vertex.cxx 5190 2006-06-09 16:16:34Z mike $"
+//
+// Portable drawing routines for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2005 by Bill Spitzak and others.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems on the following page:
+//
+// http://www.fltk.org/str.php
+//
+
+// Portable drawing code for drawing arbitrary shapes with
+// simple 2D transformations. See also fl_arc.cxx
+
+// matt: the Quartz implementation purposly doesn't use the Quartz matrix
+// operations for reasons of compatibility and maintainability
+
+#include <config.h>
+#include <FL/fl_draw.H>
+#include <FL/x.H>
+#include <FL/Fl.H>
+#include <FL/math.h>
+#include <stdlib.h>
+
+struct matrix {double a, b, c, d, x, y;};
+
+static matrix m = {1, 0, 0, 1, 0, 0};
+
+static matrix stack[32];
+static int sptr = 0;
+
+void fl_push_matrix() {
+ if (sptr==32)
+ Fl::error("fl_push_matrix(): matrix stack overflow.");
+ else
+ stack[sptr++] = m;
+}
+
+void fl_pop_matrix() {
+ if (sptr==0)
+ Fl::error("fl_pop_matrix(): matrix stack underflow.");
+ else
+ m = stack[--sptr];
+}
+
+void fl_mult_matrix(double a, double b, double c, double d, double x, double y) {
+ matrix o;
+ o.a = a*m.a + b*m.c;
+ o.b = a*m.b + b*m.d;
+ o.c = c*m.a + d*m.c;
+ o.d = c*m.b + d*m.d;
+ o.x = x*m.a + y*m.c + m.x;
+ o.y = x*m.b + y*m.d + m.y;
+ m = o;
+}
+
+void fl_scale(double x,double y) {fl_mult_matrix(x,0,0,y,0,0);}
+
+void fl_scale(double x) {fl_mult_matrix(x,0,0,x,0,0);}
+
+void fl_translate(double x,double y) {fl_mult_matrix(1,0,0,1,x,y);}
+
+void fl_rotate(double d) {
+ if (d) {
+ double s, c;
+ if (d == 0) {s = 0; c = 1;}
+ else if (d == 90) {s = 1; c = 0;}
+ else if (d == 180) {s = 0; c = -1;}
+ else if (d == 270 || d == -90) {s = -1; c = 0;}
+ else {s = sin(d*M_PI/180); c = cos(d*M_PI/180);}
+ fl_mult_matrix(c,-s,s,c,0,0);
+ }
+}
+
+// typedef what the x,y fields in a point are:
+#ifdef WIN32
+typedef int COORD_T;
+# define XPOINT XPoint
+#elif defined(__APPLE_QUARTZ__)
+typedef float COORD_T;
+typedef struct { float x; float y; } QPoint;
+# define XPOINT QPoint
+extern float fl_quartz_line_width_;
+#else
+typedef short COORD_T;
+# define XPOINT XPoint
+#endif
+
+static XPOINT *p = (XPOINT *)0;
+
+static int p_size;
+static int n;
+static int what;
+enum {LINE, LOOP, POLYGON, POINT_};
+
+void fl_begin_points() {n = 0; what = POINT_;}
+
+void fl_begin_line() {n = 0; what = LINE;}
+
+void fl_begin_loop() {n = 0; what = LOOP;}
+
+void fl_begin_polygon() {n = 0; what = POLYGON;}
+
+double fl_transform_x(double x, double y) {return x*m.a + y*m.c + m.x;}
+
+double fl_transform_y(double x, double y) {return x*m.b + y*m.d + m.y;}
+
+double fl_transform_dx(double x, double y) {return x*m.a + y*m.c;}
+
+double fl_transform_dy(double x, double y) {return x*m.b + y*m.d;}
+
+static void fl_transformed_vertex(COORD_T x, COORD_T 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_transformed_vertex(double xf, double yf) {
+#ifdef __APPLE_QUARTZ__
+ fl_transformed_vertex(COORD_T(xf), COORD_T(yf));
+#else
+ fl_transformed_vertex(COORD_T(rint(xf)), COORD_T(rint(yf)));
+#endif
+}
+
+void fl_vertex(double x,double y) {
+ fl_transformed_vertex(x*m.a + y*m.c + m.x, x*m.b + y*m.d + m.y);
+}
+
+void fl_end_points() {
+#ifdef WIN32
+ for (int i=0; i<n; i++) SetPixel(fl_gc, p[i].x, p[i].y, fl_RGB());
+#elif defined(__APPLE_QD__)
+ for (int i=0; i<n; i++) { MoveTo(p[i].x, p[i].y); Line(0, 0); }
+#elif defined(__APPLE_QUARTZ__)
+ if (fl_quartz_line_width_==1.0f) CGContextSetShouldAntialias(fl_gc, false);
+ for (int i=0; i<n; i++) {
+ CGContextMoveToPoint(fl_gc, p[i].x, p[i].y);
+ CGContextAddLineToPoint(fl_gc, p[i].x, p[i].y);
+ CGContextStrokePath(fl_gc);
+ }
+ if (fl_quartz_line_width_==1.0f) CGContextSetShouldAntialias(fl_gc, false);
+#else
+ if (n>1) XDrawPoints(fl_display, fl_window, fl_gc, p, n, 0);
+#endif
+}
+
+void fl_end_line() {
+ if (n < 2) {
+ fl_end_points();
+ return;
+ }
+#ifdef WIN32
+ if (n>1) Polyline(fl_gc, p, n);
+#elif defined(__APPLE_QD__)
+ if (n<=1) return;
+ MoveTo(p[0].x, p[0].y);
+ for (int i=1; i<n; i++) LineTo(p[i].x, p[i].y);
+#elif defined(__APPLE_QUARTZ__)
+ if (n<=1) return;
+ CGContextMoveToPoint(fl_gc, p[0].x, p[0].y);
+ for (int i=1; i<n; i++)
+ CGContextAddLineToPoint(fl_gc, p[i].x, p[i].y);
+ CGContextStrokePath(fl_gc);
+#else
+ if (n>1) XDrawLines(fl_display, fl_window, fl_gc, p, n, 0);
+#endif
+}
+
+static void 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--;
+}
+
+void fl_end_loop() {
+ fixloop();
+ if (n>2) fl_transformed_vertex((COORD_T)p[0].x, (COORD_T)p[0].y);
+ fl_end_line();
+}
+
+void fl_end_polygon() {
+ fixloop();
+ if (n < 3) {
+ fl_end_line();
+ return;
+ }
+#ifdef WIN32
+ if (n>2) {
+ SelectObject(fl_gc, fl_brush());
+ Polygon(fl_gc, p, n);
+ }
+#elif defined(__APPLE_QD__)
+ if (n<=1) return;
+ PolyHandle ph = OpenPoly();
+ MoveTo(p[0].x, p[0].y);
+ for (int i=1; i<n; i++) LineTo(p[i].x, p[i].y);
+ ClosePoly();
+ PaintPoly(ph);
+ KillPoly(ph);
+#elif defined(__APPLE_QUARTZ__)
+ if (n<=1) return;
+ CGContextMoveToPoint(fl_gc, p[0].x, p[0].y);
+ for (int i=1; i<n; i++)
+ CGContextAddLineToPoint(fl_gc, p[i].x, p[i].y);
+ CGContextClosePath(fl_gc);
+ CGContextFillPath(fl_gc);
+#else
+ if (n>2) XFillPolygon(fl_display, fl_window, fl_gc, p, n, Convex, 0);
+#endif
+}
+
+static int gap;
+#ifdef WIN32
+static int counts[20];
+static int numcount;
+#endif
+
+void fl_begin_complex_polygon() {
+ fl_begin_polygon();
+ gap = 0;
+#ifdef WIN32
+ numcount = 0;
+#endif
+}
+
+void fl_gap() {
+ while (n>gap+2 && p[n-1].x == p[gap].x && p[n-1].y == p[gap].y) n--;
+ if (n > gap+2) {
+ fl_transformed_vertex((COORD_T)p[gap].x, (COORD_T)p[gap].y);
+#ifdef WIN32
+ counts[numcount++] = n-gap;
+#endif
+ gap = n;
+ } else {
+ n = gap;
+ }
+}
+
+void fl_end_complex_polygon() {
+ fl_gap();
+ if (n < 3) {
+ fl_end_line();
+ return;
+ }
+#ifdef WIN32
+ if (n>2) {
+ SelectObject(fl_gc, fl_brush());
+ PolyPolygon(fl_gc, p, counts, numcount);
+ }
+#elif defined(__APPLE_QD__)
+ if (n<=1) return;
+ PolyHandle ph = OpenPoly();
+ MoveTo(p[0].x, p[0].y);
+ for (int i=1; i<n; i++) LineTo(p[i].x, p[i].y);
+ ClosePoly();
+ PaintPoly(ph);
+ KillPoly(ph);
+#elif defined(__APPLE_QUARTZ__)
+ if (n<=1) return;
+ CGContextMoveToPoint(fl_gc, p[0].x, p[0].y);
+ for (int i=1; i<n; i++)
+ CGContextAddLineToPoint(fl_gc, p[i].x, p[i].y);
+ CGContextClosePath(fl_gc);
+ CGContextFillPath(fl_gc);
+#else
+ if (n>2) XFillPolygon(fl_display, fl_window, fl_gc, p, n, 0, 0);
+#endif
+}
+
+// shortcut the closed circles so they use XDrawArc:
+// warning: these do not draw rotated ellipses correctly!
+// See fl_arc.c for portable version.
+
+void fl_circle(double x, double y,double r) {
+ double xt = fl_transform_x(x,y);
+ double yt = fl_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;
+#ifdef WIN32
+ if (what==POLYGON) {
+ SelectObject(fl_gc, fl_brush());
+ Pie(fl_gc, llx, lly, llx+w, lly+h, 0,0, 0,0);
+ } else
+ Arc(fl_gc, llx, lly, llx+w, lly+h, 0,0, 0,0);
+#elif defined(__APPLE_QD__)
+ Rect rt; rt.left=llx; rt.right=llx+w; rt.top=lly; rt.bottom=lly+h;
+ (what == POLYGON ? PaintOval : FrameOval)(&rt);
+#elif defined(__APPLE_QUARTZ__)
+ // Quartz warning : circle won't scale to current matrix!
+ CGContextAddArc(fl_gc, xt, yt, (w+h)*0.25f, 0, 2.0f*M_PI, 1);
+ (what == POLYGON ? CGContextFillPath : CGContextStrokePath)(fl_gc);
+#else
+ (what == POLYGON ? XFillArc : XDrawArc)
+ (fl_display, fl_window, fl_gc, llx, lly, w, h, 0, 360*64);
+#endif
+}
+
+//
+// End of "$Id: fl_vertex.cxx 5190 2006-06-09 16:16:34Z mike $".
+//