// // Unit tests for the Fast Light Tool Kit (FLTK). // // Copyright 1998-2022 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 "unittests.h" #include #include #include #include #if HAVE_GL #include #endif // // --- test drawing circles and arcs ------ // void arc(int xi, int yi, int w, int h, double a1, double a2) { if (a2<=a1) return; double rx = w/2.0; double ry = h/2.0; double x = xi + rx + 0.5; double y = yi + ry + 0.5; double circ = M_PI*0.5*(rx+ry); int i, segs = int(circ * (a2-a1) / 100); if (segs<3) segs = 3; a1 = a1/180*M_PI; a2 = a2/180*M_PI; double step = (a2-a1)/segs; int nx = int(x + cos(a1)*rx); int ny = int(y - sin(a1)*ry); fl_point(nx, ny); for (i=segs; i>0; i--) { a1 += step; nx = int(x + cos(a1)*rx); ny = int(y - sin(a1)*ry); fl_point(nx, ny); } } void draw_circles() { int a = 0, b = 0, w=40, h=40; // ---- 1: draw a circle and a filled circle fl_color(FL_RED); arc(a+1, b+1, w-2, h-2, 0.0, 360.0); fl_color(FL_GREEN); arc(a, b, w, h, 0.0, 360.0); arc(a+2, b+2, w-4, h-4, 0.0, 360.0); fl_color(FL_BLACK); fl_arc(a+1, b+1, w-1, h-1, 0.0, 360.0); // ---- fl_color(FL_RED); arc(a+1+50, b+1, w-2, h-2, 0.0, 360.0); fl_color(FL_GREEN); arc(a+50, b, w, h, 0.0, 360.0); fl_color(FL_BLACK); fl_pie(a+1+50, b+1, w-1, h-1, 0.0, 360.0); b+=44; // ---- 2: draw arcs and pies fl_color(FL_RED); // arc(a-5, b-5, w+10, h+10, 45.0, 315.0); arc(a+1, b+1, w-2, h-2, 45.0, 315.0); // arc(a+5, b+5, w-10, h-10, 45.0, 315.0); // arc(a+10, b+10, w-20, h-20, 45.0, 315.0); fl_color(FL_GREEN); arc(a, b, w, h, 45.0, 315.0); arc(a+2, b+2, w-4, h-4, 45.0, 315.0); fl_color(FL_BLACK); // fl_arc(a-5, b-5, w+10, h+10, 45.0, 315.0); fl_arc(a+1, b+1, w-1, h-1, 45.0, 315.0); // fl_arc(a+5, b+5, w-10, h-10, 45.0, 315.0); // fl_arc(a+10, b+10, w-20, h-20, 45.0, 315.0); fl_color(FL_RED); // ---- arc(a+1+50, b+1, w-2, h-2, 45.0, 315.0); fl_line(a+50+20, b+20, a+50+20+14, b+20-14); fl_line(a+50+20, b+20, a+50+20+14, b+20+14); fl_color(FL_GREEN); arc(a+50, b, w, h, 45.0, 315.0); fl_line(a+50+21, b+20, a+50+21+14, b+20-14); fl_line(a+50+21, b+20, a+50+21+14, b+20+14); fl_color(FL_BLACK); fl_pie(a+1+50, b+1, w-1, h-1, 45.0, 315.0); } #if HAVE_GL class GLCircleTest : public Fl_Gl_Window { public: GLCircleTest(int x, int y, int w, int h) : Fl_Gl_Window(x, y, w, h) { box(FL_FLAT_BOX); } void draw() { draw_begin(); Fl_Window::draw(); draw_circles(); draw_end(); } }; #endif class NativeCircleTest : public Fl_Window { public: NativeCircleTest(int x, int y, int w, int h) : Fl_Window(x, y, w, h) { box(FL_FLAT_BOX); end(); } void draw() { Fl_Window::draw(); draw_circles(); } }; // //------- test the circle drawing capabilities of this implementation ---------- // class CircleTest : public Fl_Group { public: static Fl_Widget *create() { return new CircleTest(TESTAREA_X, TESTAREA_Y, TESTAREA_W, TESTAREA_H); } CircleTest(int x, int y, int w, int h) : Fl_Group(x, y, w, h) { label("Testing fast circle, arc, and pie drawing\n\n" "No red lines should be visible. " "The green outlines should not be overwritten by circle drawings."); align(FL_ALIGN_INSIDE|FL_ALIGN_BOTTOM|FL_ALIGN_LEFT|FL_ALIGN_WRAP); box(FL_BORDER_BOX); int a = x+16, b = y+34; Fl_Box *t = new Fl_Box(a, b-24, 80, 18, "native"); t->align(FL_ALIGN_LEFT|FL_ALIGN_INSIDE); /* NativeCircleTest *nr = */ new NativeCircleTest(a+23, b-1, 200, 200); t = new Fl_Box(a, b, 18, 18, "1"); t->box(FL_ROUNDED_BOX); t->color(FL_YELLOW); t->tooltip(// Title: "Testing circle alignment.\n\n" // Description: "This draws a black circle and a black disc, surrounded by a green frame.\n\n" // Things to look out for: "If green pixels are missing, circle drawing must be adjusted (see fl_arc, fl_pie).\n\n" "If red pixels are showing, line width or aligment may be off." ); b+=44; t = new Fl_Box(a, b, 18, 18, "2"); t->box(FL_ROUNDED_BOX); t->color(FL_YELLOW); t->tooltip(// Title: "Testing arc and pie drawing.\n\n" // Description: "This draws a black frame, surrounded on the inside and outside by a green frame.\n\n" // Things to look out for: "If green pixels are missing or red pixels are showing, rectangular frame drawing schould be adjusted (see fl_rect).\n\n" "If red pixels show in the corners of the frame in hidpi mode, line endings should be adjusted." ); #if HAVE_GL a = x+16+250, b = y+34; t = new Fl_Box(a, b-24, 80, 18, "OpenGL"); t->align(FL_ALIGN_LEFT|FL_ALIGN_INSIDE); /* GLCircleTest *glr = */ new GLCircleTest(a+31, b-1, 200, 200); t = new Fl_Box(a, b, 26, 18, "1a"); t->box(FL_ROUNDED_BOX); t->color(FL_YELLOW); t->tooltip(// Title: "Testing circle alignment.\n\n" // Description: "This draws a black circle and a black disc, surrounded by a green frame.\n\n" // Things to look out for: "If green pixels are missing, circle drawing must be adjusted (see fl_arc, fl_pie).\n\n" "If red pixels are showing, line width or aligment may be off." ); b+=44; t = new Fl_Box(a, b, 26, 18, "2a"); t->box(FL_ROUNDED_BOX); t->color(FL_YELLOW); t->tooltip(// Title: "Testing arc and pie drawing.\n\n" // Description: "This draws a black frame, surrounded on the inside and outside by a green frame.\n\n" // Things to look out for: "If green pixels are missing or red pixels are showing, rectangular frame drawing schould be adjusted (see fl_rect).\n\n" "If red pixels show in the corners of the frame in hidpi mode, line endings should be adjusted." ); #endif t = new Fl_Box(x+w-1,y+h-1, 1, 1); resizable(t); } }; UnitTest circle(kTestCircles, "Circles and Arcs", CircleTest::create);