/* Drawing::drawLineTabbed
* Draws a line from [start] to [end]
*******************************************************************/
void Drawing::drawLineTabbed(fpoint2_t start, fpoint2_t end, double tab, double tab_max)
{
// Draw line
glBegin(GL_LINES);
glVertex2d(start.x, start.y);
glVertex2d(end.x, end.y);
glEnd();
// Calculate midpoint
fpoint2_t mid;
mid.x = start.x + ((end.x - start.x) * 0.5);
mid.y = start.y + ((end.y - start.y) * 0.5);
// Calculate tab length
double tablen = MathStuff::distance(start, end) * tab;
if (tablen > tab_max) tablen = tab_max;
if (tablen < 2) tablen = 2;
// Calculate tab endpoint
fpoint2_t invdir(-(end.y - start.y), end.x - start.x);
invdir.normalize();
// Draw tab
glBegin(GL_LINES);
glVertex2d(mid.x, mid.y);
glVertex2d(mid.x - invdir.x*tablen, mid.y - invdir.y*tablen);
glEnd();
}
/* Drawing::drawLineTabbed
* Draws a line from [x1,y1] to [x2,y2]
*******************************************************************/
void Drawing::drawLineTabbed(double x1, double y1, double x2, double y2, double tab, double tab_max)
{
// Draw line
glBegin(GL_LINES);
glVertex2d(x1, y1);
glVertex2d(x2, y2);
glEnd();
// Calculate midpoint
fpoint2_t mid;
mid.x = x1 + ((x2 - x1) * 0.5);
mid.y = y1 + ((y1 - y1) * 0.5);
// Calculate tab length
double tablen = MathStuff::distance(x1, y1, x2, y2) * tab;
if (tablen > tab_max) tablen = tab_max;
if (tablen < 2) tablen = 2;
// Calculate tab endpoint
fpoint2_t invdir(-(y2 - y1), x2 - x1);
invdir.normalize();
// Draw tab
glBegin(GL_LINES);
glVertex2d(mid.x, mid.y);
glVertex2d(mid.x - invdir.x*tablen, mid.y - invdir.y*tablen);
glEnd();
}
