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/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup freestyle
* \brief Class to define a cell grid surrounding the projected image of a scene
*/
#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() = default;
} /* namespace Freestyle */
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