COM_FilterNode.cc

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/* SPDX-FileCopyrightText: 2011 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#include "COM_FilterNode.h"
#include "BKE_node.hh"
#include "COM_ConvolutionEdgeFilterOperation.h"
 
namespace blender::compositor {
 
FilterNode::FilterNode(bNode *editor_node) : Node(editor_node)
{
  /* pass */
}
 
void FilterNode::convert_to_operations(NodeConverter &converter,
                                       const CompositorContext & /*context*/) const
{
  NodeInput *input_socket = this->get_input_socket(0);
  NodeInput *input_image_socket = this->get_input_socket(1);
  NodeOutput *output_socket = this->get_output_socket(0);
  ConvolutionFilterOperation *operation = nullptr;
 
  switch (this->get_bnode()->custom1) {
    case CMP_NODE_FILTER_SOFT:
      operation = new ConvolutionFilterOperation();
      operation->set3x3Filter(1 / 16.0f,
                              2 / 16.0f,
                              1 / 16.0f,
                              2 / 16.0f,
                              4 / 16.0f,
                              2 / 16.0f,
                              1 / 16.0f,
                              2 / 16.0f,
                              1 / 16.0f);
      break;
    case CMP_NODE_FILTER_SHARP_BOX:
      operation = new ConvolutionFilterOperation();
      operation->set3x3Filter(-1, -1, -1, -1, 9, -1, -1, -1, -1);
      break;
    case CMP_NODE_FILTER_LAPLACE:
      operation = new ConvolutionEdgeFilterOperation();
      operation->set3x3Filter(-1 / 8.0f,
                              -1 / 8.0f,
                              -1 / 8.0f,
                              -1 / 8.0f,
                              1.0f,
                              -1 / 8.0f,
                              -1 / 8.0f,
                              -1 / 8.0f,
                              -1 / 8.0f);
      break;
    case CMP_NODE_FILTER_SOBEL:
      operation = new ConvolutionEdgeFilterOperation();
      operation->set3x3Filter(1, 2, 1, 0, 0, 0, -1, -2, -1);
      break;
    case CMP_NODE_FILTER_PREWITT:
      operation = new ConvolutionEdgeFilterOperation();
      operation->set3x3Filter(1, 1, 1, 0, 0, 0, -1, -1, -1);
      break;
    case CMP_NODE_FILTER_KIRSCH:
      operation = new ConvolutionEdgeFilterOperation();
      operation->set3x3Filter(5, 5, 5, -3, -3, -3, -2, -2, -2);
      break;
    case CMP_NODE_FILTER_SHADOW:
      operation = new ConvolutionFilterOperation();
      operation->set3x3Filter(1, 2, 1, 0, 1, 0, -1, -2, -1);
      break;
    case CMP_NODE_FILTER_SHARP_DIAMOND:
      operation = new ConvolutionFilterOperation();
      operation->set3x3Filter(0, -1, 0, -1, 5, -1, 0, -1, 0);
      break;
    default:
      operation = new ConvolutionFilterOperation();
      operation->set3x3Filter(0, 0, 0, 0, 1, 0, 0, 0, 0);
      break;
  }
  converter.add_operation(operation);
 
  converter.map_input_socket(input_image_socket, operation->get_input_socket(0));
  converter.map_input_socket(input_socket, operation->get_input_socket(1));
  converter.map_output_socket(output_socket, operation->get_output_socket());
 
  converter.add_preview(operation->get_output_socket(0));
}
 
}  // namespace blender::compositor