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define label box pointer via <pointer-width> (width of base) and

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<pointer-length>
This commit is contained in:
mfranz 2006-07-25 07:07:34 +00:00
parent 447c06ecd3
commit 89d56f0c60
2 changed files with 31 additions and 20 deletions
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3
src/Instrumentation/HUD/HUD.hxx
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@ -439,7 +439,8 @@ private:
int _blink;
bool _box;
float _text_y;
float _marker_offset;
float _pointer_width;
float _pointer_length;
SGCondition *_blink_condition;
double _blink_interval;

40
src/Instrumentation/HUD/HUD_label.cxx
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@ -32,7 +32,8 @@ HUD::Label::Label(HUD *hud, const SGPropertyNode *n, float x, float y) :
_input(n->getNode("input", false)),
_fontsize(fgGetInt("/sim/startup/xsize") > 1000 ? FONT_LARGE : FONT_SMALL), // FIXME
_box(n->getBoolValue("box", false)),
_marker_offset(n->getFloatValue("marker-offset", 5)),
_pointer_width(n->getFloatValue("pointer-width", 7.0)),
_pointer_length(n->getFloatValue("pointer-length", 5.0)),
_blink_condition(0),
_blink_interval(n->getFloatValue("blinking/interval", -1.0f)),
_blink_target(0.0),
@ -85,49 +86,58 @@ void HUD::Label::draw(void)
return;
if (_box) {
const float tan30 = 0.57735;
float base = _marker_offset * tan30;
float l, r, p;
float pw = _pointer_width / 2.0;
l = _center_x - base;
r = _center_x + base;
l = _center_x - pw;
r = _center_x + pw;
bool draw_parallel = fabsf(_pointer_width - _w) > 2.0; // draw lines left and right of arrow?
if (option_bottom()) {
p = _y - _marker_offset;
if (draw_parallel) {
draw_line(_x, _y, l, _y);
draw_line(r, _y, _x + _w, _y);
}
p = _y - _pointer_length;
draw_line(l, _y, _center_x, p);
draw_line(_center_x, p, r, _y);
draw_line(r, _y, _x + _w, _y);
} else
draw_line(_x, _y, _x + _w, _y);
if (option_top()) {
p = _y + _h + _marker_offset;
if (draw_parallel) {
draw_line(_x, _y + _h, l, _y + _h);
draw_line(r, _y + _h, _x + _w, _y + _h);
}
p = _y + _h + _pointer_length;
draw_line(l, _y + _h, _center_x, p);
draw_line(_center_x, p, r, _y + _h);
draw_line(r, _y + _h, _x + _w, _y + _h);
} else
draw_line(_x + _w, _y + _h, _x, _y + _h);
l = _center_y - base;
r = _center_y + base;
l = _center_y - pw;
r = _center_y + pw;
draw_parallel = fabsf(_pointer_width - _h) > 2.0;
if (option_left()) {
p = _x - _marker_offset;
if (draw_parallel) {
draw_line(_x, _y, _x, l);
draw_line(_x, r, _x, _y + _h);
}
p = _x - _pointer_length;
draw_line(_x, l, p, _center_y);
draw_line(p, _center_y, _x, r);
draw_line(_x, r, _x, _y + _h);
} else
draw_line(_x, _y + _h, _x, _y);
if (option_right()) {
p = _x + _w + _marker_offset;
if (draw_parallel) {
draw_line(_x + _w, _y, _x + _w, l);
draw_line(_x + _w, r, _x + _w, _y + _h);
}
p = _x + _w + _pointer_length;
draw_line(_x + _w, l, p, _center_y);
draw_line(p, _center_y, _x + _w, r);
draw_line(_x + _w, r, _x + _w, _y + _h);
} else
draw_line(_x + _w, _y, _x + _w, _y + _h);
}