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[Summary] Adding TRACKS like MIXER

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[git-p4: depot-paths = "//Abdaw/dev_main/tracks/": change = 465119]
This commit is contained in:
Valeriy Kamyshniy 2014-06-02 07:53:01 -05:00 • committed by Paul Davis
parent 1199c85fa4
commit 0d0271e431
1 changed files with 25 additions and 8 deletions
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33
libs/gtkmm2ext/fader.cc
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@ -43,11 +43,26 @@ using namespace std;
static void get_closest_point_on_line(double xa, double ya, double xb, double yb, double xp, double yp, double& xl, double& yl )
{
// Finding the vector from A to B
// This step can be combined with the next
double a_to_b_x = xb - xa;
double a_to_b_y = yb - yb;
// Storing vector A->B
double a_to_b_x = xb - xa;
double a_to_b_y = yb - ya;
// Storing vector A->P
double a_to_p_x = xp - xa;
double a_to_p_y = yp - ya;
// Basically finding the squared magnitude
// of a_to_b
double atb2 = a_to_b_x * a_to_b_x + a_to_b_y * a_to_b_y;
// The dot product of a_to_p and a_to_b
double atp_dot_atb = a_to_p_x * a_to_b_x + a_to_p_y * a_to_b_y;
// The normalized "distance" from a to
// your closest point
double t = atp_dot_atb / atb2;
// The vector perpendicular to a_to_b;
// This step can also be combined with the next
double perpendicular_x = -a_to_b_y;
@ -59,8 +74,10 @@ static void get_closest_point_on_line(double xa, double ya, double xb, double yb
double xq = xp + perpendicular_x;
double yq = yp + perpendicular_y;
xl = ((xa*yb - ya*xb)*(xp - xq) - (xa-xb)*(xp*yq - yp*xq)) / ((xa - xb)*(yp-yq) - (ya - yb)*(yp-yq));
yl = ((xa*yb - ya*xb)*(yp - yq) - (ya-yb)*(xp*yq - yp*xq)) / ((xa - xb)*(yp-yq) - (ya - yb)*(yp-yq));
// Add the distance to A, moving
// towards B
xl = xa + a_to_b_x * t;
yl = ya + a_to_b_y * t;
}
Fader::Fader (Gtk::Adjustment& adj,
@ -372,7 +389,7 @@ Fader::on_motion_notify_event (GdkEventMotion* ev)
if (((_min_pos_x != _max_pos_x) &&
((ev_pos_x < _min_pos_x) && (ev_pos_x < _max_pos_x) ||
(ev_pos_x > _max_pos_x) && (ev_pos_x > _min_pos_x))) ||
((_min_pos_x != _max_pos_x) &&
((_min_pos_y != _max_pos_y) &&
((ev_pos_y < _min_pos_x) && (ev_pos_y < _max_pos_y) ||
(ev_pos_y > _max_pos_x) && (ev_pos_y > _min_pos_y)))) {
return true;