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// K-3D
// Copyright (c) 1995-2009, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/** \file Paints oriented half-edges. Based on half_edge_painter
\author Timothy M. Shead (tshead@k-3d.com)
\author Bart Janssens (bart.janssens@lid.kviv.be)
*/
#include <k3d-i18n-config.h>
#include <k3dsdk/document_plugin_factory.h>
#include <k3dsdk/measurement.h>
#include <k3dsdk/mesh_painter_gl.h>
#include <k3dsdk/painter_render_state_gl.h>
#include <k3dsdk/polyhedron.h>
#include <k3dsdk/selection.h>
#include <boost/scoped_ptr.hpp>
namespace module
{
namespace opengl
{
namespace painters
{
/////////////////////////////////////////////////////////////////////////////
// half_edge_painter
class half_edge_painter :
public k3d::gl::mesh_painter
{
typedef k3d::gl::mesh_painter base;
public:
half_edge_painter(k3d::iplugin_factory& Factory, k3d::idocument& Document) :
base(Factory, Document),
m_draw_selected(init_owner(*this) + init_name("draw_selected") + init_label(_("Draw Selected")) + init_description(_("Draw normals for selected polygons")) + init_value(true)),
m_draw_unselected(init_owner(*this) + init_name("draw_unselected") + init_label(_("Draw Unselected")) + init_description(_("Draw normals for unselected polygons")) + init_value(false)),
m_selected_color(init_owner(*this) + init_name("selected_color") + init_label(_("Selected Color")) + init_description(_("Normal color for selected polygons")) + init_value(k3d::color(0, 1, 1))),
m_unselected_color(init_owner(*this) + init_name("unselected_color") + init_label(_("Unselected Color")) + init_description(_("Normal color for unselected polygons")) + init_value(k3d::color(0, 0.6, 0.6))),
m_offset(init_owner(*this) + init_name("offset") + init_label(_("Offset")) + init_description(_("Offset from edge")) + init_value(0.1) + init_step_increment(0.1) + init_units(typeid(k3d::measurement::distance))),
m_arrow_size(init_owner(*this) + init_name("arrow_size") + init_label(_("Arrow size")) + init_description(_("Size for the arrow")) + init_value(0.1) + init_step_increment(0.1) + init_units(typeid(k3d::measurement::distance)))
{
m_draw_selected.changed_signal().connect(make_async_redraw_slot());
m_draw_unselected.changed_signal().connect(make_async_redraw_slot());
m_selected_color.changed_signal().connect(make_async_redraw_slot());
m_unselected_color.changed_signal().connect(make_async_redraw_slot());
m_offset.changed_signal().connect(make_async_redraw_slot());
m_arrow_size.changed_signal().connect(make_async_redraw_slot());
}
static k3d::bool_t selected(const k3d::mesh::selection_t& Selection, const k3d::uint_t Index)
{
return Selection[Index];
}
static k3d::bool_t unselected(const k3d::mesh::selection_t& Selection, const k3d::uint_t Index)
{
return !Selection[Index];
}
template<typename FunctorT>
void draw(const k3d::polyhedron::const_primitive& Polyhedron, const k3d::mesh::points_t& Points, const k3d::color& Color, FunctorT EdgeTest)
{
const size_t edge_count = Polyhedron.clockwise_edges.size();
k3d::gl::color3d(Color);
glBegin(GL_LINES);
for(size_t edge = 0; edge != edge_count; ++edge)
{
if(EdgeTest(Polyhedron.edge_selections, edge))
{
const k3d::point3 first_point = Points[Polyhedron.vertex_points[edge]];
const k3d::point3 second_point = Points[Polyhedron.vertex_points[Polyhedron.clockwise_edges[edge]]];
k3d::vector3 edge_vector = k3d::normalize(second_point - first_point);
k3d::normal3 normal_vector = k3d::normalize(k3d::polyhedron::normal(Polyhedron.vertex_points, Polyhedron.clockwise_edges, Points, edge));
k3d::vector3 offset_vector = normal_vector ^ edge_vector;
const k3d::point3 glyph_point1 = first_point + (offset_vector + edge_vector) * m_offset.pipeline_value();
const k3d::point3 glyph_point2 = second_point + (offset_vector - edge_vector) * m_offset.pipeline_value();
const k3d::point3 glyph_point3 = glyph_point2 + (offset_vector - edge_vector) * m_arrow_size.pipeline_value();
k3d::gl::vertex3d(glyph_point1);
k3d::gl::vertex3d(glyph_point2);
k3d::gl::vertex3d(glyph_point2);
k3d::gl::vertex3d(glyph_point3);
}
}
glEnd();
}
void on_paint_mesh(const k3d::mesh& Mesh, const k3d::gl::painter_render_state& RenderState, k3d::iproperty::changed_signal_t& ChangedSignal)
{
const k3d::bool_t draw_selected = m_draw_selected.pipeline_value() && RenderState.show_component_selection;
const k3d::bool_t draw_unselected = m_draw_unselected.pipeline_value();
if(!draw_selected && !draw_unselected)
return;
k3d::gl::store_attributes attributes;
glDisable(GL_LIGHTING);
for(k3d::mesh::primitives_t::const_iterator primitive = Mesh.primitives.begin(); primitive != Mesh.primitives.end(); ++primitive)
{
boost::scoped_ptr<k3d::polyhedron::const_primitive> polyhedron(k3d::polyhedron::validate(Mesh, **primitive));
if(!polyhedron.get())
continue;
if(draw_selected)
draw(*polyhedron, *Mesh.points, m_selected_color.pipeline_value(), selected);
if(draw_unselected)
draw(*polyhedron, *Mesh.points, m_unselected_color.pipeline_value(), unselected);
}
}
static k3d::iplugin_factory& get_factory()
{
static k3d::document_plugin_factory<half_edge_painter, k3d::interface_list<k3d::gl::imesh_painter > > factory(
k3d::uuid(0xf6484bfb, 0xaa46c77c, 0x1ec5f895, 0xee3f6905),
"OpenGLHalfEdgePainter",
_("Draws arrows to show polyhedron half edge orientation"),
"OpenGL Painter",
k3d::iplugin_factory::EXPERIMENTAL);
return factory;
}
private:
k3d_data(k3d::bool_t, immutable_name, change_signal, with_undo, local_storage, no_constraint, writable_property, with_serialization) m_draw_selected;
k3d_data(k3d::bool_t, immutable_name, change_signal, with_undo, local_storage, no_constraint, writable_property, with_serialization) m_draw_unselected;
k3d_data(k3d::color, immutable_name, change_signal, with_undo, local_storage, no_constraint, writable_property, with_serialization) m_selected_color;
k3d_data(k3d::color, immutable_name, change_signal, with_undo, local_storage, no_constraint, writable_property, with_serialization) m_unselected_color;
k3d_data(double, immutable_name, change_signal, with_undo, local_storage, no_constraint, measurement_property, with_serialization) m_offset;
k3d_data(double, immutable_name, change_signal, with_undo, local_storage, no_constraint, measurement_property, with_serialization) m_arrow_size;
};
/////////////////////////////////////////////////////////////////////////////
// half_edge_painter_factory
k3d::iplugin_factory& half_edge_painter_factory()
{
return half_edge_painter::get_factory();
}
} // namespace painters
} // namespace opengl
} // namespace module
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