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// K-3D
// Copyright (c) 1995-2004, 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
\brief Implements the Disk K-3D object, which renders a RenderMan disk primitive
\author Tim Shead (tshead@k-3d.com)
*/
#include <k3dsdk/algebra.h>
#include <k3dsdk/bounded.h>
#include <k3dsdk/classes.h>
#include <k3dsdk/geometry.h>
#include <k3dsdk/glutility.h>
#include <k3dsdk/iapplication.h>
#include <k3dsdk/imaterial.h>
#include <k3dsdk/object.h>
#include <k3dsdk/persistence.h>
#include <k3dsdk/material_collection.h>
#include <k3dsdk/measurement.h>
#include <k3dsdk/module.h>
#include <k3dsdk/renderman.h>
#include <k3dsdk/transformable.h>
#include <k3dsdk/viewport.h>
#include <sdpgl/sdpgl.h>
namespace
{
/////////////////////////////////////////////////////////////////////////////
// disk_implementation
class disk_implementation :
public k3d::material_collection<k3d::viewport::drawable<k3d::bounded<k3d::ri::renderable<k3d::transformable<k3d::persistent<k3d::object> > > > > >
{
typedef k3d::material_collection<k3d::viewport::drawable<k3d::bounded<k3d::ri::renderable<k3d::transformable<k3d::persistent<k3d::object> > > > > > base;
public:
disk_implementation(k3d::idocument& Document) :
base(Document),
m_radius(k3d::init_name("radius") + k3d::init_description("radius [distance]") + k3d::init_value(5.0) + k3d::init_document(Document) + k3d::init_precision( 2) + k3d::init_step_increment(0.1) + k3d::init_units(typeid(k3d::measurement::distance))),
m_height(k3d::init_name("height") + k3d::init_description("height [distance]") + k3d::init_value(0.0) + k3d::init_document(Document) + k3d::init_precision( 2) + k3d::init_step_increment(0.1) + k3d::init_units(typeid(k3d::measurement::distance))),
m_thetamax(k3d::init_name("thetamax") + k3d::init_description("thetamax [angle]") + k3d::init_value(k3d::radians(360.0)) + k3d::init_document(Document) + k3d::init_precision( 2) + k3d::init_step_increment(k3d::radians(1.0)) + k3d::init_units(typeid(k3d::measurement::angle)))
{
enable_serialization(k3d::persistence::proxy(m_radius));
enable_serialization(k3d::persistence::proxy(m_height));
enable_serialization(k3d::persistence::proxy(m_thetamax));
register_property(m_radius);
register_property(m_height);
register_property(m_thetamax);
m_radius.changed_signal().connect(SigC::slot(*this, &disk_implementation::reset_geometry));
m_height.changed_signal().connect(SigC::slot(*this, &disk_implementation::reset_geometry));
m_thetamax.changed_signal().connect(SigC::slot(*this, &disk_implementation::reset_geometry));
m_position.changed_signal().connect(SigC::slot(*this, &disk_implementation::async_redraw_all));
m_orientation.changed_signal().connect(SigC::slot(*this, &disk_implementation::async_redraw_all));
m_scale.changed_signal().connect(SigC::slot(*this, &disk_implementation::async_redraw_all));
m_gl_v_knot_vector.insert(m_gl_v_knot_vector.end(), 2, 0);
m_gl_v_knot_vector.insert(m_gl_v_knot_vector.end(), 1);
m_gl_v_knot_vector.insert(m_gl_v_knot_vector.end(), 2, 2);
}
void reset_geometry()
{
m_gl_control_points.clear();
k3d::viewport::redraw_all(document(), k3d::iviewport::ASYNCHRONOUS);
}
const k3d::bounding_box extents()
{
const double radius = m_radius.property_value();
const double height = m_height.property_value();
return k3d::bounding_box(radius, -radius, height, 0.0, radius, -radius);
}
void draw(const nurbs_renderer_t Nurbs)
{
if(m_gl_control_points.empty())
{
const double radius = m_radius.property_value();
const double height = m_height.property_value();
const double thetamax = m_thetamax.property_value();
std::vector<double> weights;
std::vector<k3d::vector3> arc_points;
k3d::nurbs_arc(k3d::vector3(1, 0, 0), k3d::vector3(0, 1, 0), 0, thetamax, 4, m_gl_u_knot_vector, weights, arc_points);
const k3d::vector3 offset = height * k3d::vector3(0, 0, 1);
for(unsigned long i = 0; i <= 2; ++i)
{
const double radius2 = k3d::mix(radius, 0.001 * radius, static_cast<double>(i) / static_cast<double>(2));
for(unsigned long j = 0; j != arc_points.size(); ++j)
{
m_gl_control_points.push_back(weights[j] * (radius2 * arc_points[j][0] + offset[0]));
m_gl_control_points.push_back(weights[j] * (radius2 * arc_points[j][1] + offset[1]));
m_gl_control_points.push_back(weights[j] * (radius2 * arc_points[j][2] + offset[2]));
m_gl_control_points.push_back(weights[j]);
}
}
}
gluBeginSurface(Nurbs);
gluNurbsSurface(Nurbs, m_gl_u_knot_vector.size(), &m_gl_u_knot_vector[0], m_gl_v_knot_vector.size(), &m_gl_v_knot_vector[0], 4, 36, &m_gl_control_points[0], 3, 2, GL_MAP2_VERTEX_4);
gluEndSurface(Nurbs);
}
void on_viewport_draw(const k3d::viewport::render_state& State)
{
k3d::viewport::setup_material(m_material.object());
const nurbs_renderer_t nurbs = nurbs_renderer(State);
glColor3dv(is_selected() ? k3d::vector3(1, 1, 1) : k3d::vector3(0, 0, 0));
gluNurbsProperty(nurbs, GLU_DISPLAY_MODE, GLU_OUTLINE_PATCH);
glDisable(GL_LIGHTING);
glDisable(GL_AUTO_NORMAL);
draw(nurbs);
if(!State.draw_two_sided)
glEnable(GL_CULL_FACE);
gluNurbsProperty(nurbs, GLU_DISPLAY_MODE, GLU_FILL);
glEnable(GL_LIGHTING);
glEnable(GL_AUTO_NORMAL);
glPolygonOffset(1.0, 1.0);
glEnable(GL_POLYGON_OFFSET_FILL);
draw(nurbs);
glDisable(GL_POLYGON_OFFSET_FILL);
}
void on_viewport_select(const k3d::viewport::render_state& State)
{
const nurbs_renderer_t nurbs = nurbs_renderer(State);
gluNurbsProperty(nurbs, GLU_DISPLAY_MODE, GLU_FILL);
glDisable(GL_LIGHTING);
glDisable(GL_AUTO_NORMAL);
glDisable(GL_CULL_FACE);
k3d::glPushName(this);
draw(nurbs);
k3d::glPopName();
}
void on_renderman_render(const k3d::ri::render_state& State)
{
const double radius = m_radius.property_value();
const double height = m_height.property_value();
const double thetamax = k3d::degrees(m_thetamax.property_value());
State.engine.RiTransformBegin();
k3d::ri::setup_material(m_material.object(), State);
State.engine.RiDiskV(height, radius, thetamax);
State.engine.RiTransformEnd();
}
k3d::iplugin_factory& factory()
{
return get_factory();
}
static k3d::iplugin_factory& get_factory()
{
static k3d::plugin_factory<
k3d::document_plugin<disk_implementation>,
k3d::interface_list<k3d::itransform_source,
k3d::interface_list<k3d::itransform_sink > > > factory(
k3d::classes::Disk(),
"Disk",
"Renders a RenderMan disk primitive",
"Objects",
k3d::iplugin_factory::STABLE);
return factory;
}
private:
k3d_measurement_property(double, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_radius;
k3d_measurement_property(double, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_height;
k3d_measurement_property(double, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_thetamax;
std::vector<GLfloat> m_gl_u_knot_vector;
std::vector<GLfloat> m_gl_v_knot_vector;
std::vector<GLfloat> m_gl_control_points;
};
} // namespace
namespace libk3dcore
{
/////////////////////////////////////////////////////////////////////////////
// disk_factory
k3d::iplugin_factory& disk_factory()
{
return disk_implementation::get_factory();
}
} // namespace libk3dcore
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