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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 Axes K-3D object, which provides a configurable set of axes to help in visualizing the 3D workspace
\author Tim Shead (tshead@k-3d.com)
*/
#include <k3dsdk/basic_math.h>
#include <k3dsdk/bounded.h>
#include <k3dsdk/classes.h>
#include <k3dsdk/iapplication.h>
#include <k3dsdk/transformable.h>
#include <k3dsdk/object.h>
#include <k3dsdk/persistence.h>
#include <k3dsdk/measurement.h>
#include <k3dsdk/module.h>
#include <k3dsdk/transform.h>
#include <k3dsdk/vectors.h>
#include <k3dsdk/viewport.h>
#include <sdpgl/sdpgl.h>
namespace
{
const double XAxisColor[4] = {1.0, 0.0, 0.0, 1.0};
const double YAxisColor[4] = {1.0, 1.0, 0.0, 1.0};
const double ZAxisColor[4] = {0.0, 1.0, 0.0, 1.0};
const double GridColor[4] = {0.4, 0.4, 0.4, 1.0};
/////////////////////////////////////////////////////////////////////////////
// axes_implementation
class axes_implementation :
public k3d::bounded<k3d::viewport::drawable<k3d::transformable<k3d::persistent<k3d::object> > > >
{
typedef k3d::bounded<k3d::viewport::drawable<k3d::transformable<k3d::persistent<k3d::object> > > > base;
public:
axes_implementation(k3d::idocument& Document) :
base(Document),
m_Axes(k3d::init_name("axes") + k3d::init_description("Display XYZ axes [boolean]") + k3d::init_value(true) + k3d::init_document(Document)),
m_XYPlane(k3d::init_name("xyplane") + k3d::init_description("Display XY plane as a grid [boolean]") + k3d::init_value(false) + k3d::init_document(Document)),
m_YZPlane(k3d::init_name("yzplane") + k3d::init_description("Display YZ plane as a grid [boolean]") + k3d::init_value(false) + k3d::init_document(Document)),
m_XZPlane(k3d::init_name("xzplane") + k3d::init_description("Display XZ plane as a grid [boolean]") + k3d::init_value(true) + k3d::init_document(Document)),
m_GridSize(k3d::init_name("gridsize") + k3d::init_description("The size of each grid square [number]") + k3d::init_value(2.0) + k3d::init_document(Document) + k3d::init_precision(2) + k3d::init_step_increment(0.1) + k3d::init_units(typeid(k3d::measurement::distance))),
m_GridCount(k3d::init_name("gridcount") + k3d::init_description("Number of squares along each grid [positive integer]") + k3d::init_value(5) + k3d::init_document(Document) + k3d::init_precision(0) + k3d::init_step_increment(1.0) + k3d::init_units(typeid(k3d::measurement::scalar)) + k3d::init_constraint(k3d::constraint::minimum(1UL)))
{
enable_serialization(k3d::persistence::proxy(m_Axes));
enable_serialization(k3d::persistence::proxy(m_XYPlane));
enable_serialization(k3d::persistence::proxy(m_YZPlane));
enable_serialization(k3d::persistence::proxy(m_XZPlane));
enable_serialization(k3d::persistence::proxy(m_GridSize));
enable_serialization(k3d::persistence::proxy(m_GridCount));
register_property(m_Axes);
register_property(m_XYPlane);
register_property(m_YZPlane);
register_property(m_XZPlane);
register_property(m_GridSize);
register_property(m_GridCount);
m_Axes.changed_signal().connect(SigC::slot(*this, &axes_implementation::async_redraw_all));
m_XYPlane.changed_signal().connect(SigC::slot(*this, &axes_implementation::async_redraw_all));
m_YZPlane.changed_signal().connect(SigC::slot(*this, &axes_implementation::async_redraw_all));
m_XZPlane.changed_signal().connect(SigC::slot(*this, &axes_implementation::async_redraw_all));
m_GridSize.changed_signal().connect(SigC::slot(*this, &axes_implementation::async_redraw_all));
m_GridCount.changed_signal().connect(SigC::slot(*this, &axes_implementation::async_redraw_all));
m_position.changed_signal().connect(SigC::slot(*this, &axes_implementation::async_redraw_all));
m_orientation.changed_signal().connect(SigC::slot(*this, &axes_implementation::async_redraw_all));
m_scale.changed_signal().connect(SigC::slot(*this, &axes_implementation::async_redraw_all));
}
const k3d::bounding_box extents()
{
const double size = m_GridSize.property_value() * m_GridCount.property_value();
return k3d::bounding_box(size, -size, size, -size, size, -size);
}
void on_viewport_draw(const k3d::viewport::render_state& State)
{
sdpgl::store_attributes attributes();
glListBase(State.gl_ascii_font_list_base);
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_1D);
glDisable(GL_TEXTURE_2D);
glDisable(GL_BLEND);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glDisable(GL_CULL_FACE);
glLineWidth(1.0f);
glDisable(GL_LINE_STIPPLE);
const long grid_count = m_GridCount.property_value();
const double grid_size = m_GridSize.property_value();
const double size = grid_count * grid_size;
// Draw axes and labels
if(m_Axes.property_value())
{
// Draw X axis
glColor3dv(XAxisColor);
glBegin(GL_LINE_LOOP);
glVertex3d(-size, 0.0, 0.0);
glVertex3d(size, 0.0, 0.0);
glEnd();
// Draw Y axis
glColor3dv(YAxisColor);
glBegin(GL_LINE_LOOP);
glVertex3d(0.0, -size, 0.0);
glVertex3d(0.0, size, 0.0);
glEnd();
// Draw Z axis
glColor3dv(ZAxisColor);
glBegin(GL_LINE_LOOP);
glVertex3d(0.0, 0.0, -size);
glVertex3d(0.0, 0.0, size);
glEnd();
// Draw axis labels ...
glColor3dv(GridColor);
double labelposition = size * 1.1;
glRasterPos3d(labelposition, 0, 0);
glCallLists(2, GL_UNSIGNED_BYTE, (GLubyte*)"+X");
glRasterPos3d(0, labelposition, 0);
glCallLists(2, GL_UNSIGNED_BYTE, (GLubyte*)"+Y");
glRasterPos3d(0, 0, labelposition);
glCallLists(2, GL_UNSIGNED_BYTE, (GLubyte*)"+Z");
glRasterPos3d(-labelposition, 0, 0);
glCallLists(2, GL_UNSIGNED_BYTE, (GLubyte*)"-X");
glRasterPos3d(0, -labelposition, 0);
glCallLists(2, GL_UNSIGNED_BYTE, (GLubyte*)"-Y");
glRasterPos3d(0, 0, -labelposition);
glCallLists(2, GL_UNSIGNED_BYTE, (GLubyte*)"-Z");
}
// Setup grid color
glColor3dv(GridColor);
// Draw XY plane
if(m_XYPlane.property_value())
{
glBegin(GL_LINES);
for(long i = -grid_count; i <= grid_count; ++i)
{
glVertex3d(i * grid_size, -size, 0.0);
glVertex3d(i * grid_size, size, 0.0);
glVertex3d(-size, i * grid_size, 0.0);
glVertex3d(size, i * grid_size, 0.0);
}
glEnd();
}
// Draw YZ plane
if(m_YZPlane.value())
{
glBegin(GL_LINES);
for(long i = -grid_count; i <= grid_count; ++i)
{
glVertex3d(0.0, i * grid_size, -size);
glVertex3d(0.0, i * grid_size, size);
glVertex3d(0.0, -size, i * grid_size);
glVertex3d(0.0, size, i * grid_size);
}
glEnd();
}
// Draw XZ plane
if(m_XZPlane.value())
{
glBegin(GL_LINES);
for(long i = -grid_count; i <= grid_count; ++i)
{
glVertex3d(i * grid_size, 0.0, -size);
glVertex3d(i * grid_size, 0.0, size);
glVertex3d(-size, 0.0, i * grid_size);
glVertex3d(size, 0.0, i * grid_size);
}
glEnd();
}
}
void on_viewport_select(const k3d::viewport::render_state& State)
{
}
void snap(const k3d::vector3& InputCoordinates, k3d::vector3& SnapCoordinates, std::string& SnapDescription)
{
// Convert coordinates to our frame ...
k3d::vector3 input_coordinates = k3d::world_to_object_matrix(*this) * InputCoordinates;
// Snap coordinates ...
input_coordinates[0] = k3d::round(input_coordinates[0] / m_GridSize.value()) * m_GridSize.value();
input_coordinates[1] = k3d::round(input_coordinates[1] / m_GridSize.value()) * m_GridSize.value();
input_coordinates[2] = k3d::round(input_coordinates[2] / m_GridSize.value()) * m_GridSize.value();
// Convert coordinates back to world frame ...
SnapCoordinates = k3d::object_to_world_matrix(*this) * input_coordinates;
SnapDescription = "Axes Grid";
}
k3d::iplugin_factory& factory()
{
return get_factory();
}
static k3d::iplugin_factory& get_factory()
{
static k3d::plugin_factory<
k3d::document_plugin<axes_implementation>,
k3d::interface_list<k3d::itransform_source,
k3d::interface_list<k3d::itransform_sink > > >factory(
k3d::classes::Axes(),
"Axes",
"Configurable set of axes to help in visualizing the 3D workspace",
"Objects",
k3d::iplugin_factory::STABLE);
return factory;
}
private:
k3d_data_property(bool, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_Axes;
k3d_data_property(bool, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_XYPlane;
k3d_data_property(bool, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_YZPlane;
k3d_data_property(bool, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_XZPlane;
k3d_measurement_property(double, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::no_constraint) m_GridSize;
k3d_measurement_property(unsigned long, k3d::immutable_name, k3d::change_signal, k3d::with_undo, k3d::local_storage, k3d::with_constraint) m_GridCount;
};
} // namespace
namespace libk3dcore
{
/////////////////////////////////////////////////////////////////////////////
// axes_factory
k3d::iplugin_factory& axes_factory()
{
return axes_implementation::get_factory();
}
} // namespace libk3dcore
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