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//
// Line style code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2017 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
//
/**
\file Fl_OpenGL_Graphics_Driver_line_style.cxx
\brief Line style drawing utility hiding different platforms.
*/
#include <config.h>
#include "Fl_OpenGL_Graphics_Driver.H"
#include <FL/gl.h>
#include <FL/Fl_Gl_Window.H>
#include <FL/Fl_RGB_Image.H>
#include <FL/Fl.H>
#include <FL/fl_draw.H>
// OpenGL implementation does not support custom patterns
// OpenGL implementation does not support cap and join types
void Fl_OpenGL_Graphics_Driver::line_style(int style, int width, char* dashes) {
if (width<1) width = 1;
line_width_ = (float)width;
int stipple = style & 0x00ff;
line_stipple_ = stipple;
// int cap = style & 0x0f00;
// int join = style & 0xf000;
if (stipple==FL_SOLID) {
glLineStipple(1, 0xFFFF);
glDisable(GL_LINE_STIPPLE);
} else {
char enable = 1;
switch (stipple & 0x00ff) {
case FL_DASH:
glLineStipple(GLint(pixels_per_unit_*line_width_), 0x0F0F); // ....****....****
break;
case FL_DOT:
glLineStipple(GLint(pixels_per_unit_*line_width_), 0x5555); // .*.*.*.*.*.*.*.*
break;
case FL_DASHDOT:
glLineStipple(GLint(pixels_per_unit_*line_width_), 0x2727); // ..*..***..*..***
break;
case FL_DASHDOTDOT:
glLineStipple(GLint(pixels_per_unit_*line_width_), 0x5757); // .*.*.***.*.*.***
break;
default:
glLineStipple(1, 0xFFFF);
enable = 0;
}
if (enable)
glEnable(GL_LINE_STIPPLE);
else
glDisable(GL_LINE_STIPPLE);
}
glLineWidth( (GLfloat)(pixels_per_unit_ * line_width_) );
glPointSize( (GLfloat)(pixels_per_unit_) );
}
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