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Diffstat (limited to 'source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.cpp')
| -rw-r--r-- | source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.cpp | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.cpp b/source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.cpp new file mode 100644 index 00000000000..15b2b3343cc --- /dev/null +++ b/source/blender/freestyle/intern/view_map/ArbitraryGridDensityProvider.cpp @@ -0,0 +1,108 @@ +// +// Filename : ArbitraryGridDensityProvider.cpp +// Author(s) : Alexander Beels +// Purpose : Class to define a cell grid surrounding +// the projected image of a scene +// Date of creation : 2011-2-5 +// +/////////////////////////////////////////////////////////////////////////////// + + +// +// 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 "ArbitraryGridDensityProvider.h" + +ArbitraryGridDensityProvider::ArbitraryGridDensityProvider(OccluderSource& source, const real proscenium[4], unsigned numCells) + : GridDensityProvider(source), numCells(numCells) +{ + initialize (proscenium); +} + +ArbitraryGridDensityProvider::ArbitraryGridDensityProvider(OccluderSource& source, const BBox<Vec3r>& bbox, const GridHelpers::Transform& transform, unsigned numCells) + : GridDensityProvider(source), numCells(numCells) +{ + real proscenium[4]; + calculateQuickProscenium(transform, bbox, proscenium); + + initialize (proscenium); +} + +ArbitraryGridDensityProvider::ArbitraryGridDensityProvider(OccluderSource& source, unsigned numCells) + : GridDensityProvider(source), numCells(numCells) +{ + real proscenium[4]; + calculateOptimalProscenium(source, proscenium); + + initialize (proscenium); +} + +ArbitraryGridDensityProvider::~ArbitraryGridDensityProvider () {} + +void ArbitraryGridDensityProvider::initialize (const real proscenium[4]) +{ + float prosceniumWidth = (proscenium[1] - proscenium[0]); + float prosceniumHeight = (proscenium[3] - proscenium[2]); + real cellArea = prosceniumWidth * prosceniumHeight / numCells; + cout << prosceniumWidth << " x " << prosceniumHeight << " grid with cells of area " << cellArea << "." << endl; + + _cellSize = sqrt(cellArea); + // Now we know how many cells make each side of our grid + _cellsX = ceil(prosceniumWidth / _cellSize); + _cellsY = ceil(prosceniumHeight / _cellSize); + cout << _cellsX << "x" << _cellsY << " cells of size " << _cellSize << " square." << endl; + + // Make sure the grid exceeds the proscenium by a small amount + float safetyZone = 0.1; + if ( _cellsX * _cellSize < prosceniumWidth * (1.0 + safetyZone) ) { + _cellsX = prosceniumWidth * (1.0 + safetyZone) / _cellSize; + } + if ( _cellsY * _cellSize < prosceniumHeight * (1.0 + safetyZone) ) { + _cellsY = prosceniumHeight * (1.0 + safetyZone) / _cellSize; + } + cout << _cellsX << "x" << _cellsY << " cells of size " << _cellSize << " square." << endl; + + // Find grid origin + _cellOrigin[0] = ((proscenium[0] + proscenium[1]) / 2.0) - (_cellsX / 2.0) * _cellSize; + _cellOrigin[1] = ((proscenium[2] + proscenium[3]) / 2.0) - (_cellsY / 2.0) * _cellSize; +} + +ArbitraryGridDensityProviderFactory::ArbitraryGridDensityProviderFactory(unsigned numCells) + : numCells(numCells) +{ +} + +ArbitraryGridDensityProviderFactory::~ArbitraryGridDensityProviderFactory () {} + +auto_ptr<GridDensityProvider> ArbitraryGridDensityProviderFactory::newGridDensityProvider(OccluderSource& source, const real proscenium[4]) +{ + return auto_ptr<GridDensityProvider>(new ArbitraryGridDensityProvider(source, proscenium, numCells)); +} + +auto_ptr<GridDensityProvider> ArbitraryGridDensityProviderFactory::newGridDensityProvider(OccluderSource& source, const BBox<Vec3r>& bbox, const GridHelpers::Transform& transform) +{ + return auto_ptr<GridDensityProvider>(new ArbitraryGridDensityProvider(source, bbox, transform, numCells)); +} + +auto_ptr<GridDensityProvider> ArbitraryGridDensityProviderFactory::newGridDensityProvider(OccluderSource& source) +{ + return auto_ptr<GridDensityProvider>(new ArbitraryGridDensityProvider(source, numCells)); +} + |