void dial_view::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
o_dial_widget->mInitPos = event->pos();
QLineF line(boundingRect().center(), o_dial_widget->mInitPos);
QLineF base_line(boundingRect().width() / 2, 0.0, boundingRect().center().x(),
boundingRect().center().y());
o_dial_widget->mAngle = angle_to(line, base_line) - 180;
o_dial_widget->m_is_pressed = 1;
update();
std::for_each(std::begin(o_dial_widget->m_on_dial_callback_list),
std::end(o_dial_widget->m_on_dial_callback_list),
[=](on_dial_callback_func a_func) {
if (a_func)
a_func(o_dial_widget->mProgressValue);
});
}
ts::Vector2<double> ts::graphics::Text::character_position(std::size_t index) const
{
if (geometry_.dirty)
{
update_geometry();
}
if (index >= geometry_.character_offsets.size())
{
return Vector2<double>();
}
Vector2<double> result;
result.x = geometry_.character_offsets[index];
result.y = base_line(index);
return result;
}
//RAII constructor
Curve(const std::vector<vec2>& _vertexes) {
const int size = _vertexes.size();
vertexes.resize(size);
for (int i = 0; i < size; i++)
vertexes[i] = curve_vertex(_vertexes[i]);
std::sort(vertexes.begin(), vertexes.end(), [](const curve_vertex& v1, const curve_vertex& v2) -> bool {return v1.x < v2.x; });
line base_line(vertexes[0], vertexes[size - 1]);
//path tracing
int next_vertex_index = -1;
int p = 0;
while (next_vertex_index != size - 1) {
for (int i = p + 1; i < size; i++) {
float vertex_check_result = base_line.vertex_check(vertexes[i]);
if (vertex_check_result >= 0.0f || floats_equal(vertex_check_result, 0.0f)) {
vertexes[p].next_vertex_index = i;
next_vertex_index = i;
p = next_vertex_index;
}
}
}
//reverse path tracing
next_vertex_index = -1;
p = size - 1;;
while (next_vertex_index != 0) {
for (int i = p - 1; i >= 0; i--) {
float vertex_check_result = base_line.vertex_check(vertexes[i]);
if (vertex_check_result < 0.0f || floats_equal(vertex_check_result, 0.0f)) {
vertexes[p].next_vertex_index = i;
next_vertex_index = i;
p = next_vertex_index;
}
}
}
}
