/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkImageMask.cxx
  Language:  C++
  Date:      $Date$
  Version:   $Revision$
  Thanks:    Thanks to C. Charles Law who developed this class.

Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/
#include "vtkImageMask.h"
#include "vtkObjectFactory.h"



//------------------------------------------------------------------------------
vtkImageMask* vtkImageMask::New()
{
  // First try to create the object from the vtkObjectFactory
  vtkObject* ret = vtkObjectFactory::CreateInstance("vtkImageMask");
  if(ret)
    {
    return (vtkImageMask*)ret;
    }
  // If the factory was unable to create the object, then create it here.
  return new vtkImageMask;
}






//----------------------------------------------------------------------------
vtkImageMask::vtkImageMask()
{
  this->NotMask = 0;
  this->MaskedOutputValue = new float[3];
  this->MaskedOutputValueLength = 3;
  this->MaskedOutputValue[0] = this->MaskedOutputValue[1] 
    = this->MaskedOutputValue[2] = 0.0;
}

vtkImageMask::~vtkImageMask()
{
  delete [] this->MaskedOutputValue;
}


//----------------------------------------------------------------------------
void vtkImageMask::SetMaskedOutputValue(int num, float *v)
{
  int idx;

  if (num < 1)
    {
    vtkErrorMacro("Output value must have length greater than 0");
    return;
    }
  if (num != this->MaskedOutputValueLength)
    {
    this->Modified();
    }
  
  if (num > this->MaskedOutputValueLength)
    {
    delete [] this->MaskedOutputValue;
    this->MaskedOutputValue = new float[num];
    this->MaskedOutputValueLength = num;
    }

  this->MaskedOutputValueLength = num;
  for (idx = 0; idx < num; ++ idx)
    {
    if (this->MaskedOutputValue[idx] != v[idx])
      {
      this->Modified();
      }
    this->MaskedOutputValue[idx] = v[idx];
    }
}


//----------------------------------------------------------------------------
// This templated function executes the filter for any type of data.
template <class T>
static void vtkImageMaskExecute(vtkImageMask *self, int ext[6],
                                vtkImageData *in1Data, T *in1Ptr,
                                vtkImageData *in2Data, unsigned char *in2Ptr,
                                vtkImageData *outData, T *outPtr, int id)
{
  int num0, num1, num2, numC, pixSize;
  int idx0, idx1, idx2;
  int in1Inc0, in1Inc1, in1Inc2;
  int in2Inc0, in2Inc1, in2Inc2;
  int outInc0, outInc1, outInc2;
  T *maskedValue;
  float *v;
  int nv;
  int maskState;
  unsigned long count = 0;
  unsigned long target;
  
  // create a masked output value with the correct length by cycling
  numC = outData->GetNumberOfScalarComponents();
  maskedValue = new T[numC];
  v = self->GetMaskedOutputValue();
  nv = self->GetMaskedOutputValueLength();
  for (idx0 = 0, idx1 = 0; idx0 < numC; ++idx0, ++idx1)
    {
    if (idx1 >= nv)
      {
      idx1 = 0;
      }
    maskedValue[idx0] = (T)(v[idx1]);
    }
  pixSize = numC * sizeof(T);
  maskState = self->GetNotMask();
  
  // Get information to march through data 
  in1Data->GetContinuousIncrements(ext, in1Inc0, in1Inc1, in1Inc2);
  in2Data->GetContinuousIncrements(ext, in2Inc0, in2Inc1, in2Inc2);
  outData->GetContinuousIncrements(ext, outInc0, outInc1, outInc2);
  num0 = ext[1] - ext[0] + 1;
  num1 = ext[3] - ext[2] + 1;
  num2 = ext[5] - ext[4] + 1;
  
  target = (unsigned long)(num2*num1/50.0);
  target++;

  // Loop through ouput pixels
  for (idx2 = 0; idx2 < num2; ++idx2)
    {
    for (idx1 = 0; !self->AbortExecute && idx1 < num1; ++idx1)
      {
      if (!id) 
        {
        if (!(count%target))
          {
          self->UpdateProgress(count/(50.0*target));
          }
        count++;
        }
      for (idx0 = 0; idx0 < num0; ++idx0)
        {
        // Pixel operation
        if (*in2Ptr && maskState == 1)
          {
          memcpy(outPtr, maskedValue, pixSize);
          }
        else if ( ! *in2Ptr && maskState == 0)
          {
          memcpy(outPtr, maskedValue, pixSize);
          }
        else
          {
          memcpy(outPtr, in1Ptr, pixSize);
          }
        
        in1Ptr += numC;
        outPtr += numC;
        in2Ptr += 1;
        }
      in1Ptr += in1Inc1;
      in2Ptr += in2Inc1;
      outPtr += outInc1;
      }
    in1Ptr += in1Inc2;
    in2Ptr += in2Inc2;
    outPtr += outInc2;
    }
  
  delete [] maskedValue;
}



//----------------------------------------------------------------------------
// This method is passed a input and output Datas, and executes the filter
// algorithm to fill the output from the inputs.
// It just executes a switch statement to call the correct function for
// the Datas data types.
void vtkImageMask::ThreadedExecute(vtkImageData **inData, 
                                   vtkImageData *outData,
                                   int outExt[6], int id)
{
  void *inPtr1;
  void *inPtr2;
  void *outPtr;
  int *tExt;
  
  vtkDebugMacro(<< "Execute: inData = " << inData 
                << ", outData = " << outData);
  

  if (inData[0] == NULL)
    {
    vtkErrorMacro(<< "Input " << 0 << " must be specified.");
    return;
    }
  if (inData[1] == NULL)
    {
    vtkErrorMacro(<< "Input " << 1 << " must be specified.");
    return;
    }

inPtr1 = inData[0]->GetScalarPointerForExtent(outExt);
  inPtr2 = inData[1]->GetScalarPointerForExtent(outExt);
  outPtr = outData->GetScalarPointerForExtent(outExt);

  tExt = inData[1]->GetExtent();
  if (tExt[0] > outExt[0] || tExt[1] < outExt[1] || 
      tExt[2] > outExt[2] || tExt[3] < outExt[3] ||
      tExt[4] > outExt[4] || tExt[5] < outExt[5])
    {
    vtkErrorMacro("Mask extent not large enough");
    return;
    }
  
  if (inData[1]->GetNumberOfScalarComponents() != 1)
    {
    vtkErrorMacro("Maks can have one comenent");
    }
    
  if (inData[0]->GetScalarType() != outData->GetScalarType() ||
      inData[1]->GetScalarType() != VTK_UNSIGNED_CHAR)
    {
    vtkErrorMacro(<< "Execute: image ScalarType (" 
      << inData[0]->GetScalarType() << ") must match out ScalarType (" 
      << outData->GetScalarType() << "), and mask scalar type (" 
      << inData[1]->GetScalarType() << ") must be unsigned char.");
    return;
    }
  
  switch (inData[0]->GetScalarType())
    {
    vtkTemplateMacro9(vtkImageMaskExecute, this, outExt, inData[0], 
                      (VTK_TT *)(inPtr1), inData[1], (unsigned char *)(inPtr2),
                      outData, (VTK_TT *)(outPtr),id);
    default:
      vtkErrorMacro(<< "Execute: Unknown ScalarType");
      return;
    }
}

//----------------------------------------------------------------------------
// The output extent is the intersection.
void vtkImageMask::ExecuteInformation(vtkImageData **inDatas, 
                                      vtkImageData *outData)
{
  int ext[6], *ext2, idx;

  if (inDatas == NULL || inDatas[0] == NULL || inDatas[1] == NULL)
    {
    vtkErrorMacro("Missing and input.");
    return;
    }
  
  inDatas[0]->GetWholeExtent(ext);
  ext2 = this->GetInput(1)->GetWholeExtent();
  for (idx = 0; idx < 3; ++idx)
    {
    if (ext2[idx*2] > ext[idx*2])
      {
      ext[idx*2] = ext2[idx*2];
      }
    if (ext2[idx*2+1] < ext[idx*2+1])
      {
      ext[idx*2+1] = ext2[idx*2+1];
      }
    }
  
  outData->SetWholeExtent(ext);
}




void vtkImageMask::PrintSelf(ostream& os, vtkIndent indent)
{
  int idx;
  
  vtkImageTwoInputFilter::PrintSelf(os,indent);

  os << indent << "MaskedOutputValue: " << this->MaskedOutputValue[0];
  for (idx = 1; idx < this->MaskedOutputValueLength; ++idx)
    {
    os << ", " << this->MaskedOutputValue[idx];
    }
  os << endl;

  os << indent << "NotMask: " << (this->NotMask ? "On\n" : "Off\n");
}

