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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/freestyle/intern/geometry/GridHelpers.cpp
* \ingroup freestyle
* \brief Class to define a cell grid surrounding the projected image of a scene
* \author Alexander Beels
* \date 2010-12-21
*/
#include "GridHelpers.h"
namespace Freestyle {
void GridHelpers::getDefaultViewProscenium(real viewProscenium[4])
{
// Get proscenium boundary for culling
// bufferZone determines the amount by which the area processed should exceed the actual image area.
// This is intended to avoid visible artifacts generated along the proscenium edge.
// Perhaps this is no longer needed now that entire view edges are culled at once, since that theoretically
// should eliminate visible artifacts.
// To the extent it is still useful, bufferZone should be put into the UI as configurable percentage value
const real bufferZone = 0.05;
// borderZone describes a blank border outside the proscenium, but still inside the image area.
// Only intended for exposing possible artifacts along or outside the proscenium edge during debugging.
const real borderZone = 0.0;
viewProscenium[0] = g_freestyle.viewport[2] * (borderZone - bufferZone);
viewProscenium[1] = g_freestyle.viewport[2] * (1.0f - borderZone + bufferZone);
viewProscenium[2] = g_freestyle.viewport[3] * (borderZone - bufferZone);
viewProscenium[3] = g_freestyle.viewport[3] * (1.0f - borderZone + bufferZone);
}
GridHelpers::Transform::~Transform ()
{
}
} /* namespace Freestyle */
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