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// Include GLGizmoBase.hpp before I18N.hpp as it includes some libigl code, which overrides our localization "L" macro.
#include "GLGizmoCut.hpp"
#include "slic3r/GUI/GLCanvas3D.hpp"
#include <GL/glew.h>
#include <wx/button.h>
#include <wx/checkbox.h>
#include <wx/stattext.h>
#include <wx/sizer.h>
#include "slic3r/GUI/GUI_App.hpp"
namespace Slic3r {
namespace GUI {
const double GLGizmoCut::Offset = 10.0;
const double GLGizmoCut::Margin = 20.0;
const std::array<float, 3> GLGizmoCut::GrabberColor = { 1.0, 0.5, 0.0 };
GLGizmoCut::GLGizmoCut(GLCanvas3D& parent, const std::string& icon_filename, unsigned int sprite_id)
: GLGizmoBase(parent, icon_filename, sprite_id)
, m_cut_z(0.0)
, m_max_z(0.0)
, m_keep_upper(true)
, m_keep_lower(true)
, m_rotate_lower(false)
{}
bool GLGizmoCut::on_init()
{
m_grabbers.emplace_back();
m_shortcut_key = WXK_CONTROL_C;
return true;
}
std::string GLGizmoCut::on_get_name() const
{
return (_(L("Cut")) + " [C]").ToUTF8().data();
}
void GLGizmoCut::on_set_state()
{
// Reset m_cut_z on gizmo activation
if (get_state() == On) {
m_cut_z = m_parent.get_selection().get_bounding_box().size()(2) / 2.0;
}
}
bool GLGizmoCut::on_is_activable(const Selection& selection) const
{
return selection.is_single_full_instance() && !selection.is_wipe_tower();
}
void GLGizmoCut::on_start_dragging(const Selection& selection)
{
if (m_hover_id == -1) { return; }
const BoundingBoxf3& box = selection.get_bounding_box();
m_start_z = m_cut_z;
update_max_z(selection);
m_drag_pos = m_grabbers[m_hover_id].center;
m_drag_center = box.center();
m_drag_center(2) = m_cut_z;
}
void GLGizmoCut::on_update(const UpdateData& data, const Selection& selection)
{
if (m_hover_id != -1) {
set_cut_z(m_start_z + calc_projection(data.mouse_ray));
}
}
void GLGizmoCut::on_render(const Selection& selection) const
{
if (m_grabbers[0].dragging) {
set_tooltip("Z: " + format(m_cut_z, 2));
}
update_max_z(selection);
const BoundingBoxf3& box = selection.get_bounding_box();
Vec3d plane_center = box.center();
plane_center(2) = m_cut_z;
const float min_x = box.min(0) - Margin;
const float max_x = box.max(0) + Margin;
const float min_y = box.min(1) - Margin;
const float max_y = box.max(1) + Margin;
glsafe(::glEnable(GL_DEPTH_TEST));
glsafe(::glDisable(GL_CULL_FACE));
glsafe(::glEnable(GL_BLEND));
glsafe(::glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA));
// Draw the cutting plane
::glBegin(GL_QUADS);
::glColor4f(0.8f, 0.8f, 0.8f, 0.5f);
::glVertex3f(min_x, min_y, plane_center(2));
::glVertex3f(max_x, min_y, plane_center(2));
::glVertex3f(max_x, max_y, plane_center(2));
::glVertex3f(min_x, max_y, plane_center(2));
glsafe(::glEnd());
glsafe(::glEnable(GL_CULL_FACE));
glsafe(::glDisable(GL_BLEND));
// TODO: draw cut part contour?
// Draw the grabber and the connecting line
m_grabbers[0].center = plane_center;
m_grabbers[0].center(2) = plane_center(2) + Offset;
glsafe(::glDisable(GL_DEPTH_TEST));
glsafe(::glLineWidth(m_hover_id != -1 ? 2.0f : 1.5f));
glsafe(::glColor3f(1.0, 1.0, 0.0));
::glBegin(GL_LINES);
::glVertex3dv(plane_center.data());
::glVertex3dv(m_grabbers[0].center.data());
glsafe(::glEnd());
std::copy(std::begin(GrabberColor), std::end(GrabberColor), m_grabbers[0].color);
m_grabbers[0].render(m_hover_id == 0, (float)((box.size()(0) + box.size()(1) + box.size()(2)) / 3.0));
}
void GLGizmoCut::on_render_for_picking(const Selection& selection) const
{
glsafe(::glDisable(GL_DEPTH_TEST));
render_grabbers_for_picking(selection.get_bounding_box());
}
void GLGizmoCut::on_render_input_window(float x, float y, float bottom_limit, const Selection& selection)
{
const float approx_height = m_imgui->scaled(11.0f);
y = std::min(y, bottom_limit - approx_height);
m_imgui->set_next_window_pos(x, y, ImGuiCond_Always);
m_imgui->set_next_window_bg_alpha(0.5f);
m_imgui->begin(_(L("Cut")), ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse);
ImGui::PushItemWidth(m_imgui->scaled(5.0f));
ImGui::InputDouble("Z", &m_cut_z, 0.0f, 0.0f, "%.2f");
m_imgui->checkbox(_(L("Keep upper part")), m_keep_upper);
m_imgui->checkbox(_(L("Keep lower part")), m_keep_lower);
m_imgui->checkbox(_(L("Rotate lower part upwards")), m_rotate_lower);
m_imgui->disabled_begin(!m_keep_upper && !m_keep_lower);
const bool cut_clicked = m_imgui->button(_(L("Perform cut")));
m_imgui->disabled_end();
m_imgui->end();
if (cut_clicked && (m_keep_upper || m_keep_lower)) {
perform_cut(selection);
}
}
void GLGizmoCut::update_max_z(const Selection& selection) const
{
m_max_z = selection.get_bounding_box().size()(2);
set_cut_z(m_cut_z);
}
void GLGizmoCut::set_cut_z(double cut_z) const
{
// Clamp the plane to the object's bounding box
m_cut_z = std::max(0.0, std::min(m_max_z, cut_z));
}
void GLGizmoCut::perform_cut(const Selection& selection)
{
const auto instance_idx = selection.get_instance_idx();
const auto object_idx = selection.get_object_idx();
wxCHECK_RET(instance_idx >= 0 && object_idx >= 0, "GLGizmoCut: Invalid object selection");
wxGetApp().plater()->cut(object_idx, instance_idx, m_cut_z, m_keep_upper, m_keep_lower, m_rotate_lower);
}
double GLGizmoCut::calc_projection(const Linef3& mouse_ray) const
{
double projection = 0.0;
const Vec3d starting_vec = m_drag_pos - m_drag_center;
const double len_starting_vec = starting_vec.norm();
if (len_starting_vec != 0.0)
{
Vec3d mouse_dir = mouse_ray.unit_vector();
// finds the intersection of the mouse ray with the plane parallel to the camera viewport and passing throught the starting position
// use ray-plane intersection see i.e. https://en.wikipedia.org/wiki/Line%E2%80%93plane_intersection algebric form
// in our case plane normal and ray direction are the same (orthogonal view)
// when moving to perspective camera the negative z unit axis of the camera needs to be transformed in world space and used as plane normal
Vec3d inters = mouse_ray.a + (m_drag_pos - mouse_ray.a).dot(mouse_dir) / mouse_dir.squaredNorm() * mouse_dir;
// vector from the starting position to the found intersection
Vec3d inters_vec = inters - m_drag_pos;
// finds projection of the vector along the staring direction
projection = inters_vec.dot(starting_vec.normalized());
}
return projection;
}
} // namespace GUI
} // namespace Slic3r
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