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//
// Filename : GridHelpers.cpp
// Author(s) : Alexander Beels
// Purpose : Class to define a cell grid surrounding
// the projected image of a scene
// Date of creation : 2010-12-21
//
///////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) : Please refer to the COPYRIGHT file distributed
// with this source distribution.
//
// 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.
//
///////////////////////////////////////////////////////////////////////////////
#include <math.h>
#include "GridHelpers.h"
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] = freestyle_viewport[2] * (borderZone - bufferZone);
viewProscenium[1] = freestyle_viewport[2] * (1.0f - borderZone + bufferZone);
viewProscenium[2] = freestyle_viewport[3] * (borderZone - bufferZone);
viewProscenium[3] = freestyle_viewport[3] * (1.0f - borderZone + bufferZone);
}
GridHelpers::Transform::~Transform () {}
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