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blender-archive/source/blender/compositor/nodes/COM_TransformNode.cc
Manuel Castilla f84fb12f5d Compositor: Add support for canvas compositing
This commit adds functionality for operations that require pixel
translation or resizing on "Full Frame" mode, allowing to adjust
their canvas. It fixes most cropping issues in translate, scale,
rotate and transform nodes by adjusting their canvas to the result,
instead of the input canvas.

Operations output buffer is still always on (0,0) position for
easier image algorithm implementation, even when the
canvas is not.

Current limitations (will be addressed on bcon2):
- Displayed translation in Viewer node is limited to 6000px.
- When scaling up the canvas size is limited to the
 scene resolution size x 1.5 . From that point it crops.

If none of these limitations are hit, the Viewer node displays
the full input with any translation.

Differential Revision: https://developer.blender.org/D12466
2021-09-28 22:00:17 +02:00

109 lines
4.5 KiB
C++

/*
* 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.
*
* Copyright 2011, Blender Foundation.
*/
#include "COM_TransformNode.h"
#include "COM_ExecutionSystem.h"
#include "COM_RotateOperation.h"
#include "COM_ScaleOperation.h"
#include "COM_SetSamplerOperation.h"
#include "COM_SetValueOperation.h"
#include "COM_TransformOperation.h"
#include "COM_TranslateOperation.h"
namespace blender::compositor {
TransformNode::TransformNode(bNode *editorNode) : Node(editorNode)
{
/* pass */
}
void TransformNode::convertToOperations(NodeConverter &converter,
const CompositorContext &context) const
{
NodeInput *imageInput = this->getInputSocket(0);
NodeInput *xInput = this->getInputSocket(1);
NodeInput *yInput = this->getInputSocket(2);
NodeInput *angleInput = this->getInputSocket(3);
NodeInput *scaleInput = this->getInputSocket(4);
switch (context.get_execution_model()) {
case eExecutionModel::Tiled: {
ScaleRelativeOperation *scaleOperation = new ScaleRelativeOperation();
converter.addOperation(scaleOperation);
RotateOperation *rotateOperation = new RotateOperation();
rotateOperation->setDoDegree2RadConversion(false);
converter.addOperation(rotateOperation);
TranslateOperation *translateOperation = new TranslateOperation();
converter.addOperation(translateOperation);
SetSamplerOperation *sampler = new SetSamplerOperation();
sampler->setSampler((PixelSampler)this->getbNode()->custom1);
converter.addOperation(sampler);
converter.mapInputSocket(imageInput, sampler->getInputSocket(0));
converter.addLink(sampler->getOutputSocket(), scaleOperation->getInputSocket(0));
converter.mapInputSocket(scaleInput, scaleOperation->getInputSocket(1));
converter.mapInputSocket(scaleInput, scaleOperation->getInputSocket(2)); // xscale = yscale
converter.addLink(scaleOperation->getOutputSocket(), rotateOperation->getInputSocket(0));
converter.mapInputSocket(angleInput, rotateOperation->getInputSocket(1));
converter.addLink(rotateOperation->getOutputSocket(), translateOperation->getInputSocket(0));
converter.mapInputSocket(xInput, translateOperation->getInputSocket(1));
converter.mapInputSocket(yInput, translateOperation->getInputSocket(2));
converter.mapOutputSocket(getOutputSocket(), translateOperation->getOutputSocket());
break;
}
case eExecutionModel::FullFrame: {
ScaleRelativeOperation *scaleOperation = new ScaleRelativeOperation();
converter.addOperation(scaleOperation);
RotateOperation *rotateOperation = new RotateOperation();
rotateOperation->setDoDegree2RadConversion(false);
converter.addOperation(rotateOperation);
TranslateOperation *translateOperation = new TranslateCanvasOperation();
converter.addOperation(translateOperation);
PixelSampler sampler = (PixelSampler)this->getbNode()->custom1;
scaleOperation->setSampler(sampler);
rotateOperation->set_sampler(sampler);
scaleOperation->set_scale_canvas_max_size(context.get_render_size());
converter.mapInputSocket(imageInput, scaleOperation->getInputSocket(0));
converter.mapInputSocket(scaleInput, scaleOperation->getInputSocket(1));
converter.mapInputSocket(scaleInput, scaleOperation->getInputSocket(2)); // xscale = yscale
converter.addLink(scaleOperation->getOutputSocket(), rotateOperation->getInputSocket(0));
converter.mapInputSocket(angleInput, rotateOperation->getInputSocket(1));
converter.addLink(rotateOperation->getOutputSocket(), translateOperation->getInputSocket(0));
converter.mapInputSocket(xInput, translateOperation->getInputSocket(1));
converter.mapInputSocket(yInput, translateOperation->getInputSocket(2));
converter.mapOutputSocket(getOutputSocket(), translateOperation->getOutputSocket());
break;
}
}
}
} // namespace blender::compositor