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// K-3D
// Copyright (c) 1995-2008, 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
\author Tim Shead (tshead@k-3d.com)
*/
#include <k3d-i18n-config.h>
#include <k3dsdk/document_plugin_factory.h>
#include <k3dsdk/hyperboloid.h>
#include <k3dsdk/mesh.h>
#include <k3dsdk/mesh_painter_gl.h>
#include <k3dsdk/nurbs_curve.h>
#include <k3dsdk/painter_render_state_gl.h>
#include <k3dsdk/painter_selection_state_gl.h>
#include <k3dsdk/selection.h>
#include <k3dsdk/utility_gl.h>
#include <boost/scoped_ptr.hpp>
namespace module
{
namespace opengl
{
namespace painters
{
/////////////////////////////////////////////////////////////////////////////
// hyperboloid_painter
class hyperboloid_painter :
public k3d::gl::mesh_painter
{
typedef k3d::gl::mesh_painter base;
public:
hyperboloid_painter(k3d::iplugin_factory& Factory, k3d::idocument& Document) :
base(Factory, Document)
{
}
void on_paint_mesh(const k3d::mesh& Mesh, const k3d::gl::painter_render_state& RenderState, k3d::iproperty::changed_signal_t& ChangedSignal)
{
const k3d::color color = RenderState.node_selection ? k3d::color(1, 1, 1) : k3d::color(0.8, 0.8, 0.8);
const k3d::color selected_color = RenderState.show_component_selection ? k3d::color(1, 0, 0) : color;
for(k3d::mesh::primitives_t::const_iterator primitive = Mesh.primitives.begin(); primitive != Mesh.primitives.end(); ++primitive)
{
boost::scoped_ptr<k3d::hyperboloid::const_primitive> hyperboloid(k3d::hyperboloid::validate(Mesh, **primitive));
if(!hyperboloid)
continue;
glPolygonOffset(1.0, 1.0);
glEnable(GL_POLYGON_OFFSET_FILL);
glEnable(GL_LIGHTING);
glColor3d(0.8, 0.8, 0.8);
glMatrixMode(GL_MODELVIEW);
for(k3d::uint_t i = 0; i != hyperboloid->matrices.size(); ++i)
{
k3d::gl::material(GL_FRONT_AND_BACK, GL_DIFFUSE, hyperboloid->selections[i] ? selected_color : color);
glPushMatrix();
k3d::gl::push_matrix(hyperboloid->matrices[i]);
draw_solid(RenderState, hyperboloid->start_points[i], hyperboloid->end_points[i], hyperboloid->sweep_angles[i]);
glPopMatrix();
}
}
}
void on_select_mesh(const k3d::mesh& Mesh, const k3d::gl::painter_render_state& RenderState, const k3d::gl::painter_selection_state& SelectionState, k3d::iproperty::changed_signal_t& ChangedSignal)
{
if(!SelectionState.select_component.count(k3d::selection::SURFACE))
return;
k3d::uint_t primitive_index = 0;
for(k3d::mesh::primitives_t::const_iterator primitive = Mesh.primitives.begin(); primitive != Mesh.primitives.end(); ++primitive, ++primitive_index)
{
boost::scoped_ptr<k3d::hyperboloid::const_primitive> hyperboloid(k3d::hyperboloid::validate(Mesh, **primitive));
if(!hyperboloid)
continue;
k3d::gl::push_selection_token(k3d::selection::PRIMITIVE, primitive_index);
glDisable(GL_LIGHTING);
glMatrixMode(GL_MODELVIEW);
for(k3d::uint_t i = 0; i != hyperboloid->matrices.size(); ++i)
{
k3d::gl::push_selection_token(k3d::selection::SURFACE, i);
glPushMatrix();
k3d::gl::push_matrix(hyperboloid->matrices[i]);
draw_solid(RenderState, hyperboloid->start_points[i], hyperboloid->end_points[i], hyperboloid->sweep_angles[i]);
glPopMatrix();
k3d::gl::pop_selection_token(); // SURFACE
}
k3d::gl::pop_selection_token(); // PRIMITIVE
}
}
void draw_solid(const k3d::gl::render_state& State, const k3d::point3& StartPoint, const k3d::point3& EndPoint, const k3d::double_t SweepAngle)
{
const k3d::double_t x1 = StartPoint[0];
const k3d::double_t y1 = StartPoint[1];
const k3d::double_t z1 = StartPoint[2];
const k3d::double_t x2 = EndPoint[0];
const k3d::double_t y2 = EndPoint[1];
const k3d::double_t z2 = EndPoint[2];
const k3d::double_t thetamin1 = atan2(y1, x1);
const k3d::double_t thetamin2 = atan2(y2, x2);
const k3d::double_t radius1 = sqrt(x1 * x1 + y1 * y1);
const k3d::double_t radius2 = sqrt(x2 * x2 + y2 * y2);
const k3d::point3 offset1 = z1 * k3d::point3(0, 0, 1);
const k3d::point3 offset2 = z2 * k3d::point3(0, 0, 1);
k3d::mesh::knots_t knots1;
k3d::mesh::weights_t weights1;
k3d::mesh::points_t arc_points1;
k3d::nurbs_curve::circular_arc(k3d::vector3(1, 0, 0), k3d::vector3(0, 1, 0), thetamin1, thetamin1 + SweepAngle, 4, knots1, weights1, arc_points1);
k3d::mesh::knots_t knots2;
k3d::mesh::weights_t weights2;
k3d::mesh::points_t arc_points2;
k3d::nurbs_curve::circular_arc(k3d::vector3(1, 0, 0), k3d::vector3(0, 1, 0), thetamin2, thetamin2 + SweepAngle, 4, knots2, weights2, arc_points2);
std::vector<GLfloat> gl_u_knot_vector(knots2.begin(), knots2.end());
std::vector<GLfloat> gl_v_knot_vector;
std::vector<GLfloat> gl_control_points;
gl_v_knot_vector.insert(gl_v_knot_vector.end(), 2, 0);
gl_v_knot_vector.insert(gl_v_knot_vector.end(), 2, 1);
for(k3d::uint_t j = 0; j != arc_points1.size(); ++j)
{
gl_control_points.push_back(weights1[j] * (radius1 * arc_points1[j][0] + offset1[0]));
gl_control_points.push_back(weights1[j] * (radius1 * arc_points1[j][1] + offset1[1]));
gl_control_points.push_back(weights1[j] * (radius1 * arc_points1[j][2] + offset1[2]));
gl_control_points.push_back(weights1[j]);
}
for(k3d::uint_t j = 0; j != arc_points2.size(); ++j)
{
gl_control_points.push_back(weights2[j] * (radius2 * arc_points2[j][0] + offset2[0]));
gl_control_points.push_back(weights2[j] * (radius2 * arc_points2[j][1] + offset2[1]));
gl_control_points.push_back(weights2[j] * (radius2 * arc_points2[j][2] + offset2[2]));
gl_control_points.push_back(weights2[j]);
}
GLUnurbsObj* const nurbs_renderer = gluNewNurbsRenderer();
// Important! We load our own matrices for efficiency (saves round-trips to the server) and to prevent problems with selection
gluNurbsProperty(nurbs_renderer, GLU_AUTO_LOAD_MATRIX, GL_FALSE);
gluNurbsProperty(nurbs_renderer, GLU_CULLING, GL_TRUE);
GLfloat gl_modelview_matrix[16];
glGetFloatv(GL_MODELVIEW_MATRIX, gl_modelview_matrix);
gluLoadSamplingMatrices(nurbs_renderer, gl_modelview_matrix, State.gl_projection_matrix, State.gl_viewport);
gluBeginSurface(nurbs_renderer);
gluNurbsSurface(nurbs_renderer, gl_u_knot_vector.size(), &gl_u_knot_vector[0], gl_v_knot_vector.size(), &gl_v_knot_vector[0], 4, 36, &gl_control_points[0], 3, 2, GL_MAP2_VERTEX_4);
gluEndSurface(nurbs_renderer);
gluDeleteNurbsRenderer(nurbs_renderer);
}
static k3d::iplugin_factory& get_factory()
{
static k3d::document_plugin_factory<hyperboloid_painter, k3d::interface_list<k3d::gl::imesh_painter> > factory(
k3d::uuid(0x8fc78171, 0x3e49ff1a, 0xa4b6e69d, 0xaa8fafa3),
"OpenGLHyperboloidPainter",
_("Renders hyperboloid primitives using OpenGL"),
"OpenGL Painter",
k3d::iplugin_factory::STABLE);
return factory;
}
};
/////////////////////////////////////////////////////////////////////////////
// hyperboloid_painter_factory
k3d::iplugin_factory& hyperboloid_painter_factory()
{
return hyperboloid_painter::get_factory();
}
} // namespace painters
} // namespace opengl
} // namespace module
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