static void knob_mousedrag(t_knob *x, t_object *patcherview, t_pt pt, long modifiers)
{
t_rect rect;
ebox_get_rect_for_view((t_ebox *)x, &rect);
if(x->f_circular)
{
const float size = rect.width * 0.5f;
const float angle = pd_angle(pt.x - size, -(size - pt.y));
if(x->f_endless)
{
const float value = pd_wrap((angle - EPD_PI2) / EPD_2PI, 0.f, 1.f);
if(ebox_parameter_isinverted((t_ebox *)x, 1))
{
ebox_parameter_setvalue_normalized((t_ebox *)x, 1, 1.f - value, 1);
}
else
{
ebox_parameter_setvalue_normalized((t_ebox *)x, 1, value, 1);
}
}
else
{
const float value = (pd_clip(pd_wrap((angle - EPD_PI2) / EPD_2PI, 0.f, 1.f), 0.125f, 0.875f) - 0.125f) / 0.75f;
if(ebox_parameter_isinverted((t_ebox *)x, 1))
{
ebox_parameter_setvalue_normalized((t_ebox *)x, 1, 1.f - value, 1);
}
else
{
ebox_parameter_setvalue_normalized((t_ebox *)x, 1, value, 1);
}
}
knob_output(x);
ebox_invalidate_layer((t_ebox *)x, cream_sym_needle_layer);
ebox_redraw((t_ebox *)x);
}
else
{
const float current = ebox_parameter_getvalue_normalized((t_ebox *)x, 1);
const float diff = (x->f_reference - pt.y) / (rect.width) * (ebox_parameter_isinverted((t_ebox *)x, 1) ? -1.f : 1.f);
if(x->f_endless)
{
ebox_parameter_setvalue_normalized((t_ebox *)x, 1, pd_wrap(current + diff, 0.f, 1.f), 1);
}
else
{
ebox_parameter_setvalue_normalized((t_ebox *)x, 1, pd_clip(current + diff, 0.f, 1.f), 1);
}
x->f_reference = pt.y;
}
knob_output(x);
ebox_invalidate_layer((t_ebox *)x, cream_sym_needle_layer);
ebox_redraw((t_ebox *)x);
}
void egraphics_arc_oval_to(t_elayer *g, float cx, float cy, float radius, float extend)
{
if(g->e_state == EGRAPHICS_OPEN)
{
if(g->e_new_objects.e_type == E_GOBJ_PATH && g->e_new_objects.e_points)
{
t_pt p2, p3, p4, c = {cx, cy}, prev = g->e_new_objects.e_points[g->e_new_objects.e_npoints-1];
float r1 = pd_radius(prev.x - cx, prev.y - cy);
float angle = pd_angle(prev.x - cx, prev.y - cy);
float ratio = (radius - r1) / (fabsf(extend) / EPD_PI4);
while(extend > EPD_2PI)
{
extend -= EPD_2PI;
}
while(extend < -EPD_2PI)
{
extend += EPD_2PI;
}
while(fabsf(extend) >= EPD_PI4)
{
if(extend < 0.)
{
create_small_arc_oval(r1, r1 + ratio, angle, -EPD_PI4, c, &p2, &p3, &p4);
extend += EPD_PI4;
angle -= EPD_PI4;
r1 += ratio;
}
else
{
create_small_arc_oval(r1, r1 + ratio, angle, EPD_PI4, c, &p2, &p3, &p4);
extend -= EPD_PI4;
angle += EPD_PI4;
r1 += ratio;
}
egraphics_curve_to(g, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y);
}
if(fabsf(extend) > 1e-6)
{
create_small_arc_oval(r1, radius, angle, extend, c, &p2, &p3, &p4);
egraphics_curve_to(g, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y);
}
}
else
{
g->e_new_objects.e_type = E_GOBJ_INVALID;
}
}
}
void knob_mousedrag(t_knob *x, t_object *patcherview, t_pt pt, long modifiers)
{
float angle = pd_angle(pt.x - x->j_box.b_rect.width * 0.5, (x->j_box.b_rect.height * 0.5 - pt.y)) / EPD_2PI;
if(x->f_mode)
{
if(x->f_endless)
{
if(x->f_min < x->f_max)
{
angle = -angle;
angle -= 0.25;
while (angle < 0.)
angle += 1.;
while (angle > 1.)
angle -= 1.;
x->f_value = angle * (x->f_max - x->f_min) + x->f_min;
}
else
{
angle += 0.25;
while (angle < 0.)
angle += 1.;
while (angle > 1.)
angle -= 1.;
x->f_value = angle * (x->f_min - x->f_max) + x->f_max;
}
}
else
{
if(x->f_min < x->f_max)
{
angle = -angle;
angle -= 0.25;
while (angle < 0.)
angle += 1.;
while (angle > 1.)
angle -= 1.;
angle = pd_clip_minmax(angle, 0.125, 0.875);
angle -= 0.125;
angle *= 1. / 0.75;
x->f_value = angle * (x->f_max - x->f_min) + x->f_min;
}
else
{
angle += 0.25;
while (angle < 0.)
angle += 1.;
while (angle > 1.)
angle -= 1.;
angle = pd_clip_minmax(angle, 0.125, 0.875);
angle -= 0.125;
angle *= 1. / 0.75;
x->f_value = angle * (x->f_min - x->f_max) + x->f_max;
}
}
}
else
{
float diff = x->f_ref_y - pt.y;
if(diff == 0xffffffff)
return;
if(x->f_min < x->f_max)
{
if(x->f_endless)
{
x->f_value = fmodf(diff / 50. * (x->f_max - x->f_min) + x->f_ref_value + x->f_max - x->f_min, x->f_max - x->f_min);
}
else
x->f_value = pd_clip_minmax(diff / 50. * (x->f_max - x->f_min) + x->f_ref_value, x->f_min, x->f_max);
}
else
{
if(x->f_endless)
{
x->f_value = fmodf(diff / 50. * (x->f_min - x->f_max) + x->f_ref_value + x->f_min - x->f_max, x->f_min - x->f_max);
}
else
x->f_value = pd_clip_minmax(diff / 50. * (x->f_min - x->f_max) + x->f_ref_value, x->f_max, x->f_min);
}
}
ebox_invalidate_layer((t_ebox *)x, gensym("needle_layer"));
ebox_redraw((t_ebox *)x);
knob_output(x);
}
