From 6fdbdea4e65b75ac9ebda91320deb656655d3af5 Mon Sep 17 00:00:00 2001 From: Jon Bergli Heier Date: Wed, 1 Jun 2011 19:31:19 +0200 Subject: A bunch of network-related changes. --- noiseutils/COPYING.txt | 504 --------- noiseutils/noiseutils.cpp | 1298 ----------------------- noiseutils/noiseutils.h | 2540 --------------------------------------------- noiseutils/readme.txt | 4 - noiseutils/warnings.diff | 56 - 5 files changed, 4402 deletions(-) delete mode 100644 noiseutils/COPYING.txt delete mode 100644 noiseutils/noiseutils.cpp delete mode 100644 noiseutils/noiseutils.h delete mode 100644 noiseutils/readme.txt delete mode 100644 noiseutils/warnings.diff (limited to 'noiseutils') diff --git a/noiseutils/COPYING.txt b/noiseutils/COPYING.txt deleted file mode 100644 index cbee875..0000000 --- a/noiseutils/COPYING.txt +++ /dev/null @@ -1,504 +0,0 @@ - GNU LESSER GENERAL PUBLIC LICENSE - Version 2.1, February 1999 - - Copyright (C) 1991, 1999 Free Software Foundation, Inc. - 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - -[This is the first released version of the Lesser GPL. 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See the GNU Lesser General Public -// License (COPYING.txt) for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with this library; if not, write to the Free Software Foundation, -// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -// -// The developer's email is jlbezigvins@gmzigail.com (for great email, take -// off every 'zig'.) -// - -#include - -#include -#include - -#include "noiseutils.h" - -using namespace noise; -using namespace noise::model; -using namespace noise::module; - -// Bitmap header size. -const int BMP_HEADER_SIZE = 54; - -// Direction of the light source, in compass degrees (0 = north, 90 = east, -// 180 = south, 270 = east) -const double DEFAULT_LIGHT_AZIMUTH = 45.0; - -// Amount of contrast between light and dark areas. -const double DEFAULT_LIGHT_CONTRAST = 1.0; - -// Elevation of the light source above the horizon, in degrees (0 = on -// horizon, 90 = directly overhead) -const double DEFAULT_LIGHT_ELEVATION = 45.0; - -////////////////////////////////////////////////////////////////////////////// -// Miscellaneous functions - -namespace noise -{ - - namespace utils - { - - // Performs linear interpolation between two 8-bit channel values. - inline noise::uint8 BlendChannel (const uint8 channel0, - const uint8 channel1, float alpha) - { - float c0 = (float)channel0 / 255.0; - float c1 = (float)channel1 / 255.0; - return (noise::uint8)(((c1 * alpha) + (c0 * (1.0f - alpha))) * 255.0f); - } - - // Performs linear interpolation between two colors and stores the result - // in out. - inline void LinearInterpColor (const Color& color0, const Color& color1, - float alpha, Color& out) - { - out.alpha = BlendChannel (color0.alpha, color1.alpha, alpha); - out.blue = BlendChannel (color0.blue , color1.blue , alpha); - out.green = BlendChannel (color0.green, color1.green, alpha); - out.red = BlendChannel (color0.red , color1.red , alpha); - } - - // Unpacks a floating-point value into four bytes. This function is - // specific to Intel machines. A portable version will come soon (I - // hope.) - inline noise::uint8* UnpackFloat (noise::uint8* bytes, float value) - { - noise::uint8* pBytes = (noise::uint8*)(&value); - bytes[0] = *pBytes++; - bytes[1] = *pBytes++; - bytes[2] = *pBytes++; - bytes[3] = *pBytes++; - return bytes; - } - - // Unpacks a 16-bit integer value into two bytes in little endian format. - inline noise::uint8* UnpackLittle16 (noise::uint8* bytes, - noise::uint16 integer) - { - bytes[0] = (noise::uint8)((integer & 0x00ff) ); - bytes[1] = (noise::uint8)((integer & 0xff00) >> 8 ); - return bytes; - } - - // Unpacks a 32-bit integer value into four bytes in little endian format. - inline noise::uint8* UnpackLittle32 (noise::uint8* bytes, - noise::uint32 integer) - { - bytes[0] = (noise::uint8)((integer & 0x000000ff) ); - bytes[1] = (noise::uint8)((integer & 0x0000ff00) >> 8 ); - bytes[2] = (noise::uint8)((integer & 0x00ff0000) >> 16); - bytes[3] = (noise::uint8)((integer & 0xff000000) >> 24); - return bytes; - } - - } - -} - -using namespace noise; - -using namespace noise::utils; - -////////////////////////////////////////////////////////////////////////////// -// GradientColor class - -GradientColor::GradientColor () -{ - m_pGradientPoints = NULL; -} - -GradientColor::~GradientColor () -{ - delete[] m_pGradientPoints; -} - -void GradientColor::AddGradientPoint (double gradientPos, - const Color& gradientColor) -{ - // Find the insertion point for the new gradient point and insert the new - // gradient point at that insertion point. The gradient point array will - // remain sorted by gradient position. - int insertionPos = FindInsertionPos (gradientPos); - InsertAtPos (insertionPos, gradientPos, gradientColor); -} - -void GradientColor::Clear () -{ - delete[] m_pGradientPoints; - m_pGradientPoints = NULL; - m_gradientPointCount = 0; -} - -int GradientColor::FindInsertionPos (double gradientPos) -{ - int insertionPos; - for (insertionPos = 0; insertionPos < m_gradientPointCount; - insertionPos++) { - if (gradientPos < m_pGradientPoints[insertionPos].pos) { - // We found the array index in which to insert the new gradient point. - // Exit now. - break; - } else if (gradientPos == m_pGradientPoints[insertionPos].pos) { - // Each gradient point is required to contain a unique gradient - // position, so throw an exception. - throw noise::ExceptionInvalidParam (); - } - } - return insertionPos; -} - -const Color& GradientColor::GetColor (double gradientPos) const -{ - assert (m_gradientPointCount >= 2); - - // Find the first element in the gradient point array that has a gradient - // position larger than the gradient position passed to this method. - int indexPos; - for (indexPos = 0; indexPos < m_gradientPointCount; indexPos++) { - if (gradientPos < m_pGradientPoints[indexPos].pos) { - break; - } - } - - // Find the two nearest gradient points so that we can perform linear - // interpolation on the color. - int index0 = ClampValue (indexPos - 1, 0, m_gradientPointCount - 1); - int index1 = ClampValue (indexPos , 0, m_gradientPointCount - 1); - - // If some gradient points are missing (which occurs if the gradient - // position passed to this method is greater than the largest gradient - // position or less than the smallest gradient position in the array), get - // the corresponding gradient color of the nearest gradient point and exit - // now. - if (index0 == index1) { - m_workingColor = m_pGradientPoints[index1].color; - return m_workingColor; - } - - // Compute the alpha value used for linear interpolation. - double input0 = m_pGradientPoints[index0].pos; - double input1 = m_pGradientPoints[index1].pos; - double alpha = (gradientPos - input0) / (input1 - input0); - - // Now perform the linear interpolation given the alpha value. - const Color& color0 = m_pGradientPoints[index0].color; - const Color& color1 = m_pGradientPoints[index1].color; - LinearInterpColor (color0, color1, (float)alpha, m_workingColor); - return m_workingColor; -} - -void GradientColor::InsertAtPos (int insertionPos, double gradientPos, - const Color& gradientColor) -{ - // Make room for the new gradient point at the specified insertion position - // within the gradient point array. The insertion position is determined by - // the gradient point's position; the gradient points must be sorted by - // gradient position within that array. - GradientPoint* newGradientPoints; - newGradientPoints = new GradientPoint[m_gradientPointCount + 1]; - for (int i = 0; i < m_gradientPointCount; i++) { - if (i < insertionPos) { - newGradientPoints[i] = m_pGradientPoints[i]; - } else { - newGradientPoints[i + 1] = m_pGradientPoints[i]; - } - } - delete[] m_pGradientPoints; - m_pGradientPoints = newGradientPoints; - ++m_gradientPointCount; - - // Now that we've made room for the new gradient point within the array, add - // the new gradient point. - m_pGradientPoints[insertionPos].pos = gradientPos ; - m_pGradientPoints[insertionPos].color = gradientColor; -} - -////////////////////////////////////////////////////////////////////////////// -// NoiseMap class - -NoiseMap::NoiseMap () -{ - InitObj (); -} - -NoiseMap::NoiseMap (int width, int height) -{ - InitObj (); - SetSize (width, height); -} - -NoiseMap::NoiseMap (const NoiseMap& rhs) -{ - InitObj (); - CopyNoiseMap (rhs); -} - -NoiseMap::~NoiseMap () -{ - delete[] m_pNoiseMap; -} - -NoiseMap& NoiseMap::operator= (const NoiseMap& rhs) -{ - CopyNoiseMap (rhs); - - return *this; -} - -void NoiseMap::Clear (float value) -{ - if (m_pNoiseMap != NULL) { - for (int y = 0; y < m_height; y++) { - float* pDest = GetSlabPtr (0, y); - for (int x = 0; x < m_width; x++) { - *pDest++ = value; - } - } - } -} - -void NoiseMap::CopyNoiseMap (const NoiseMap& source) -{ - // Resize the noise map buffer, then copy the slabs from the source noise - // map buffer to this noise map buffer. - SetSize (source.GetWidth (), source.GetHeight ()); - for (int y = 0; y < source.GetHeight (); y++) { - const float* pSource = source.GetConstSlabPtr (0, y); - float* pDest = GetSlabPtr (0, y); - memcpy (pDest, pSource, (size_t)source.GetWidth () * sizeof (float)); - } - - // Copy the border value as well. - m_borderValue = source.m_borderValue; -} - -void NoiseMap::DeleteNoiseMapAndReset () -{ - delete[] m_pNoiseMap; - InitObj (); -} - -float NoiseMap::GetValue (int x, int y) const -{ - if (m_pNoiseMap != NULL) { - if (x >= 0 && x < m_width && y >= 0 && y < m_height) { - return *(GetConstSlabPtr (x, y)); - } - } - // The coordinates specified are outside the noise map. Return the border - // value. - return m_borderValue; -} - -void NoiseMap::InitObj () -{ - m_pNoiseMap = NULL; - m_height = 0; - m_width = 0; - m_stride = 0; - m_memUsed = 0; - m_borderValue = 0.0; -} - -void NoiseMap::ReclaimMem () -{ - size_t newMemUsage = CalcMinMemUsage (m_width, m_height); - if (m_memUsed > newMemUsage) { - // There is wasted memory. Create the smallest buffer that can fit the - // data and copy the data to it. - float* pNewNoiseMap = NULL; - try { - pNewNoiseMap = new float[newMemUsage]; - } - catch (...) { - throw noise::ExceptionOutOfMemory (); - } - memcpy (pNewNoiseMap, m_pNoiseMap, newMemUsage * sizeof (float)); - delete[] m_pNoiseMap; - m_pNoiseMap = pNewNoiseMap; - m_memUsed = newMemUsage; - } -} - -void NoiseMap::SetSize (int width, int height) -{ - if (width < 0 || height < 0 - || width > RASTER_MAX_WIDTH || height > RASTER_MAX_HEIGHT) { - // Invalid width or height. - throw noise::ExceptionInvalidParam (); - } else if (width == 0 || height == 0) { - // An empty noise map was specified. Delete it and zero out the size - // member variables. - DeleteNoiseMapAndReset (); - } else { - // A new noise map size was specified. Allocate a new noise map buffer - // unless the current buffer is large enough for the new noise map (we - // don't want costly reallocations going on.) - size_t newMemUsage = CalcMinMemUsage (width, height); - if (m_memUsed < newMemUsage) { - // The new size is too big for the current noise map buffer. We need to - // reallocate. - DeleteNoiseMapAndReset (); - try { - m_pNoiseMap = new float[newMemUsage]; - } - catch (...) { - throw noise::ExceptionOutOfMemory (); - } - m_memUsed = newMemUsage; - } - m_stride = (int)CalcStride (width); - m_width = width; - m_height = height; - } -} - -void NoiseMap::SetValue (int x, int y, float value) -{ - if (m_pNoiseMap != NULL) { - if (x >= 0 && x < m_width && y >= 0 && y < m_height) { - *(GetSlabPtr (x, y)) = value; - } - } -} - -void NoiseMap::TakeOwnership (NoiseMap& source) -{ - // Copy the values and the noise map buffer from the source noise map to - // this noise map. Now this noise map pwnz the source buffer. - delete[] m_pNoiseMap; - m_memUsed = source.m_memUsed; - m_height = source.m_height; - m_pNoiseMap = source.m_pNoiseMap; - m_stride = source.m_stride; - m_width = source.m_width; - - // Now that the source buffer is assigned to this noise map, reset the - // source noise map object. - source.InitObj (); -} - -////////////////////////////////////////////////////////////////////////////// -// Image class - -Image::Image () -{ - InitObj (); -} - -Image::Image (int width, int height) -{ - InitObj (); - SetSize (width, height); -} - -Image::Image (const Image& rhs) -{ - InitObj (); - CopyImage (rhs); -} - -Image::~Image () -{ - delete[] m_pImage; -} - -Image& Image::operator= (const Image& rhs) -{ - CopyImage (rhs); - - return *this; -} - -void Image::Clear (const Color& value) -{ - if (m_pImage != NULL) { - for (int y = 0; y < m_height; y++) { - Color* pDest = GetSlabPtr (0, y); - for (int x = 0; x < m_width; x++) { - *pDest++ = value; - } - } - } -} - -void Image::CopyImage (const Image& source) -{ - // Resize the image buffer, then copy the slabs from the source image - // buffer to this image buffer. - SetSize (source.GetWidth (), source.GetHeight ()); - for (int y = 0; y < source.GetHeight (); y++) { - const Color* pSource = source.GetConstSlabPtr (0, y); - Color* pDest = GetSlabPtr (0, y); - memcpy (pDest, pSource, (size_t)source.GetWidth () * sizeof (float)); - } - - // Copy the border value as well. - m_borderValue = source.m_borderValue; -} - -void Image::DeleteImageAndReset () -{ - delete[] m_pImage; - InitObj (); -} - -Color Image::GetValue (int x, int y) const -{ - if (m_pImage != NULL) { - if (x >= 0 && x < m_width && y >= 0 && y < m_height) { - return *(GetConstSlabPtr (x, y)); - } - } - // The coordinates specified are outside the image. Return the border - // value. - return m_borderValue; -} - -void Image::InitObj () -{ - m_pImage = NULL; - m_height = 0; - m_width = 0; - m_stride = 0; - m_memUsed = 0; - m_borderValue = Color (0, 0, 0, 0); -} - -void Image::ReclaimMem () -{ - size_t newMemUsage = CalcMinMemUsage (m_width, m_height); - if (m_memUsed > newMemUsage) { - // There is wasted memory. Create the smallest buffer that can fit the - // data and copy the data to it. - Color* pNewImage = NULL; - try { - pNewImage = new Color[newMemUsage]; - } - catch (...) { - throw noise::ExceptionOutOfMemory (); - } - memcpy (pNewImage, m_pImage, newMemUsage * sizeof (float)); - delete[] m_pImage; - m_pImage = pNewImage; - m_memUsed = newMemUsage; - } -} - -void Image::SetSize (int width, int height) -{ - if (width < 0 || height < 0 - || width > RASTER_MAX_WIDTH || height > RASTER_MAX_HEIGHT) { - // Invalid width or height. - throw noise::ExceptionInvalidParam (); - } else if (width == 0 || height == 0) { - // An empty image was specified. Delete it and zero out the size member - // variables. - DeleteImageAndReset (); - } else { - // A new image size was specified. Allocate a new image buffer unless - // the current buffer is large enough for the new image (we don't want - // costly reallocations going on.) - size_t newMemUsage = CalcMinMemUsage (width, height); - if (m_memUsed < newMemUsage) { - // The new size is too big for the current image buffer. We need to - // reallocate. - DeleteImageAndReset (); - try { - m_pImage = new Color[newMemUsage]; - } - catch (...) { - throw noise::ExceptionOutOfMemory (); - } - m_memUsed = newMemUsage; - } - m_stride = (int)CalcStride (width); - m_width = width; - m_height = height; - } -} - -void Image::SetValue (int x, int y, const Color& value) -{ - if (m_pImage != NULL) { - if (x >= 0 && x < m_width && y >= 0 && y < m_height) { - *(GetSlabPtr (x, y)) = value; - } - } -} - -void Image::TakeOwnership (Image& source) -{ - // Copy the values and the image buffer from the source image to this image. - // Now this image pwnz the source buffer. - delete[] m_pImage; - m_memUsed = source.m_memUsed; - m_height = source.m_height; - m_pImage = source.m_pImage; - m_stride = source.m_stride; - m_width = source.m_width; - - // Now that the source buffer is assigned to this image, reset the source - // image object. - source.InitObj (); -} - -///////////////////////////////////////////////////////////////////////////// -// WriterBMP class - -int WriterBMP::CalcWidthByteCount (int width) const -{ - return ((width * 3) + 3) & ~0x03; -} - -void WriterBMP::WriteDestFile () -{ - if (m_pSourceImage == NULL) { - throw noise::ExceptionInvalidParam (); - } - - int width = m_pSourceImage->GetWidth (); - int height = m_pSourceImage->GetHeight (); - - // The width of one line in the file must be aligned on a 4-byte boundary. - int bufferSize = CalcWidthByteCount (width); - int destSize = bufferSize * height; - - // This buffer holds one horizontal line in the destination file. - noise::uint8* pLineBuffer = NULL; - - // File object used to write the file. - std::ofstream os; - os.clear (); - - // Allocate a buffer to hold one horizontal line in the bitmap. - try { - pLineBuffer = new noise::uint8[bufferSize]; - } - catch (...) { - throw noise::ExceptionOutOfMemory (); - } - - // Open the destination file. - os.open (m_destFilename.c_str (), std::ios::out | std::ios::binary); - if (os.fail () || os.bad ()) { - delete[] pLineBuffer; - throw noise::ExceptionUnknown (); - } - - // Build the header. - noise::uint8 d[4]; - os.write ("BM", 2); - os.write ((char*)UnpackLittle32 (d, destSize + BMP_HEADER_SIZE), 4); - os.write ("\0\0\0\0", 4); - os.write ((char*)UnpackLittle32 (d, (noise::uint32)BMP_HEADER_SIZE), 4); - os.write ((char*)UnpackLittle32 (d, 40), 4); // Palette offset - os.write ((char*)UnpackLittle32 (d, (noise::uint32)width ), 4); - os.write ((char*)UnpackLittle32 (d, (noise::uint32)height), 4); - os.write ((char*)UnpackLittle16 (d, 1 ), 2); // Planes per pixel - os.write ((char*)UnpackLittle16 (d, 24), 2); // Bits per plane - os.write ("\0\0\0\0", 4); // Compression (0 = none) - os.write ((char*)UnpackLittle32 (d, (noise::uint32)destSize), 4); - os.write ((char*)UnpackLittle32 (d, 2834), 4); // X pixels per meter - os.write ((char*)UnpackLittle32 (d, 2834), 4); // Y pixels per meter - os.write ("\0\0\0\0", 4); - os.write ("\0\0\0\0", 4); - if (os.fail () || os.bad ()) { - os.clear (); - os.close (); - os.clear (); - delete[] pLineBuffer; - throw noise::ExceptionUnknown (); - } - - // Build and write each horizontal line to the file. - for (int y = 0; y < height; y++) { - memset (pLineBuffer, 0, bufferSize); - Color* pSource = m_pSourceImage->GetSlabPtr (y); - noise::uint8* pDest = pLineBuffer; - for (int x = 0; x < width; x++) { - *pDest++ = pSource->blue ; - *pDest++ = pSource->green; - *pDest++ = pSource->red ; - ++pSource; - } - os.write ((char*)pLineBuffer, (size_t)bufferSize); - if (os.fail () || os.bad ()) { - os.clear (); - os.close (); - os.clear (); - delete[] pLineBuffer; - throw noise::ExceptionUnknown (); - } - } - - os.close (); - os.clear (); - delete[] pLineBuffer; -} - -///////////////////////////////////////////////////////////////////////////// -// WriterTER class - -int WriterTER::CalcWidthByteCount (int width) const -{ - return (width * sizeof (int16)); -} - -void WriterTER::WriteDestFile () -{ - if (m_pSourceNoiseMap == NULL) { - throw noise::ExceptionInvalidParam (); - } - - int width = m_pSourceNoiseMap->GetWidth (); - int height = m_pSourceNoiseMap->GetHeight (); - - int bufferSize = CalcWidthByteCount (width); - - // This buffer holds one horizontal line in the destination file. - noise::uint8* pLineBuffer = NULL; - - // File object used to write the file. - std::ofstream os; - os.clear (); - - // Allocate a buffer to hold one horizontal line in the height map. - try { - pLineBuffer = new noise::uint8[bufferSize]; - } - catch (...) { - throw noise::ExceptionOutOfMemory (); - } - - // Open the destination file. - os.open (m_destFilename.c_str (), std::ios::out | std::ios::binary); - if (os.fail () || os.bad ()) { - os.clear (); - delete[] pLineBuffer; - throw noise::ExceptionUnknown (); - } - - // Build the header. - noise::uint8 d[4]; - int16 heightScale = (int16)(floor (32768.0 / (double)m_metersPerPoint)); - os.write ("TERRAGENTERRAIN ", 16); - os.write ("SIZE", 4); - os.write ((char*)UnpackLittle16 (d, GetMin (width, height) - 1), 2); - os.write ("\0\0", 2); - os.write ("XPTS", 4); - os.write ((char*)UnpackLittle16 (d, width), 2); - os.write ("\0\0", 2); - os.write ("YPTS", 4); - os.write ((char*)UnpackLittle16 (d, height), 2); - os.write ("\0\0", 2); - os.write ("SCAL", 4); - os.write ((char*)UnpackFloat (d, m_metersPerPoint), 4); - os.write ((char*)UnpackFloat (d, m_metersPerPoint), 4); - os.write ((char*)UnpackFloat (d, m_metersPerPoint), 4); - os.write ("ALTW", 4); - os.write ((char*)UnpackLittle16 (d, heightScale), 2); - os.write ("\0\0", 2); - if (os.fail () || os.bad ()) { - os.clear (); - os.close (); - os.clear (); - delete[] pLineBuffer; - throw noise::ExceptionUnknown (); - } - - // Build and write each horizontal line to the file. - for (int y = 0; y < height; y++) { - float* pSource = m_pSourceNoiseMap->GetSlabPtr (y); - noise::uint8* pDest = pLineBuffer; - for (int x = 0; x < width; x++) { - int16 scaledHeight = (int16)(floor (*pSource * 2.0)); - UnpackLittle16 (pDest, scaledHeight); - pDest += 2; - ++pSource; - } - os.write ((char*)pLineBuffer, (size_t)bufferSize); - if (os.fail () || os.bad ()) { - os.clear (); - os.close (); - os.clear (); - delete[] pLineBuffer; - throw noise::ExceptionUnknown (); - } - } - - os.close (); - os.clear (); - delete[] pLineBuffer; -} - -///////////////////////////////////////////////////////////////////////////// -// NoiseMapBuilder class - -NoiseMapBuilder::NoiseMapBuilder (): - m_pCallback (NULL), - m_destHeight (0), - m_destWidth (0), - m_pDestNoiseMap (NULL), - m_pSourceModule (NULL) -{ -} - -void NoiseMapBuilder::SetCallback (NoiseMapCallback pCallback) -{ - m_pCallback = pCallback; -} - -///////////////////////////////////////////////////////////////////////////// -// NoiseMapBuilderCylinder class - -NoiseMapBuilderCylinder::NoiseMapBuilderCylinder (): - m_lowerAngleBound (0.0), - m_lowerHeightBound (0.0), - m_upperAngleBound (0.0), - m_upperHeightBound (0.0) -{ -} - -void NoiseMapBuilderCylinder::Build () -{ - if ( m_upperAngleBound <= m_lowerAngleBound - || m_upperHeightBound <= m_lowerHeightBound - || m_destWidth <= 0 - || m_destHeight <= 0 - || m_pSourceModule == NULL - || m_pDestNoiseMap == NULL) { - throw noise::ExceptionInvalidParam (); - } - - // Resize the destination noise map so that it can store the new output - // values from the source model. - m_pDestNoiseMap->SetSize (m_destWidth, m_destHeight); - - // Create the cylinder model. - model::Cylinder cylinderModel; - cylinderModel.SetModule (*m_pSourceModule); - - double angleExtent = m_upperAngleBound - m_lowerAngleBound ; - double heightExtent = m_upperHeightBound - m_lowerHeightBound; - double xDelta = angleExtent / (double)m_destWidth ; - double yDelta = heightExtent / (double)m_destHeight; - double curAngle = m_lowerAngleBound ; - double curHeight = m_lowerHeightBound; - - // Fill every point in the noise map with the output values from the model. - for (int y = 0; y < m_destHeight; y++) { - float* pDest = m_pDestNoiseMap->GetSlabPtr (y); - curAngle = m_lowerAngleBound; - for (int x = 0; x < m_destWidth; x++) { - float curValue = (float)cylinderModel.GetValue (curAngle, curHeight); - *pDest++ = curValue; - curAngle += xDelta; - } - curHeight += yDelta; - if (m_pCallback != NULL) { - m_pCallback (y); - } - } -} - -///////////////////////////////////////////////////////////////////////////// -// NoiseMapBuilderPlane class - -NoiseMapBuilderPlane::NoiseMapBuilderPlane (): - m_isSeamlessEnabled (false), - m_lowerXBound (0.0), - m_lowerZBound (0.0), - m_upperXBound (0.0), - m_upperZBound (0.0) -{ -} - -void NoiseMapBuilderPlane::Build () -{ - if ( m_upperXBound <= m_lowerXBound - || m_upperZBound <= m_lowerZBound - || m_destWidth <= 0 - || m_destHeight <= 0 - || m_pSourceModule == NULL - || m_pDestNoiseMap == NULL) { - throw noise::ExceptionInvalidParam (); - } - - // Resize the destination noise map so that it can store the new output - // values from the source model. - m_pDestNoiseMap->SetSize (m_destWidth, m_destHeight); - - // Create the plane model. - model::Plane planeModel; - planeModel.SetModule (*m_pSourceModule); - - double xExtent = m_upperXBound - m_lowerXBound; - double zExtent = m_upperZBound - m_lowerZBound; - double xDelta = xExtent / (double)m_destWidth ; - double zDelta = zExtent / (double)m_destHeight; - double xCur = m_lowerXBound; - double zCur = m_lowerZBound; - - // Fill every point in the noise map with the output values from the model. - for (int z = 0; z < m_destHeight; z++) { - float* pDest = m_pDestNoiseMap->GetSlabPtr (z); - xCur = m_lowerXBound; - for (int x = 0; x < m_destWidth; x++) { - float finalValue; - if (!m_isSeamlessEnabled) { - finalValue = planeModel.GetValue (xCur, zCur); - } else { - double swValue, seValue, nwValue, neValue; - swValue = planeModel.GetValue (xCur , zCur ); - seValue = planeModel.GetValue (xCur + xExtent, zCur ); - nwValue = planeModel.GetValue (xCur , zCur + zExtent); - neValue = planeModel.GetValue (xCur + xExtent, zCur + zExtent); - double xBlend = 1.0 - ((xCur - m_lowerXBound) / xExtent); - double zBlend = 1.0 - ((zCur - m_lowerZBound) / zExtent); - double z0 = LinearInterp (swValue, seValue, xBlend); - double z1 = LinearInterp (nwValue, neValue, xBlend); - finalValue = (float)LinearInterp (z0, z1, zBlend); - } - *pDest++ = finalValue; - xCur += xDelta; - } - zCur += zDelta; - if (m_pCallback != NULL) { - m_pCallback (z); - } - } -} - -///////////////////////////////////////////////////////////////////////////// -// NoiseMapBuilderSphere class - -NoiseMapBuilderSphere::NoiseMapBuilderSphere (): - m_eastLonBound (0.0), - m_northLatBound (0.0), - m_southLatBound (0.0), - m_westLonBound (0.0) -{ -} - -void NoiseMapBuilderSphere::Build () -{ - if ( m_eastLonBound <= m_westLonBound - || m_northLatBound <= m_southLatBound - || m_destWidth <= 0 - || m_destHeight <= 0 - || m_pSourceModule == NULL - || m_pDestNoiseMap == NULL) { - throw noise::ExceptionInvalidParam (); - } - - // Resize the destination noise map so that it can store the new output - // values from the source model. - m_pDestNoiseMap->SetSize (m_destWidth, m_destHeight); - - // Create the plane model. - model::Sphere sphereModel; - sphereModel.SetModule (*m_pSourceModule); - - double lonExtent = m_eastLonBound - m_westLonBound ; - double latExtent = m_northLatBound - m_southLatBound; - double xDelta = lonExtent / (double)m_destWidth ; - double yDelta = latExtent / (double)m_destHeight; - double curLon = m_westLonBound ; - double curLat = m_southLatBound; - - // Fill every point in the noise map with the output values from the model. - for (int y = 0; y < m_destHeight; y++) { - float* pDest = m_pDestNoiseMap->GetSlabPtr (y); - curLon = m_westLonBound; - for (int x = 0; x < m_destWidth; x++) { - float curValue = (float)sphereModel.GetValue (curLat, curLon); - *pDest++ = curValue; - curLon += xDelta; - } - curLat += yDelta; - if (m_pCallback != NULL) { - m_pCallback (y); - } - } -} - -////////////////////////////////////////////////////////////////////////////// -// RendererImage class - -RendererImage::RendererImage (): - m_isLightEnabled (false), - m_isWrapEnabled (false), - m_lightAzimuth (45.0), - m_lightBrightness (1.0), - m_lightColor (255, 255, 255, 255), - m_lightContrast (1.0), - m_lightElev (45.0), - m_lightIntensity (1.0), - m_pBackgroundImage (NULL), - m_pDestImage (NULL), - m_pSourceNoiseMap (NULL), - m_recalcLightValues (true) -{ - BuildGrayscaleGradient (); -}; - -void RendererImage::AddGradientPoint (double gradientPos, - const Color& gradientColor) -{ - m_gradient.AddGradientPoint (gradientPos, gradientColor); -} - -void RendererImage::BuildGrayscaleGradient () -{ - ClearGradient (); - m_gradient.AddGradientPoint (-1.0, Color ( 0, 0, 0, 255)); - m_gradient.AddGradientPoint ( 1.0, Color (255, 255, 255, 255)); -} - -void RendererImage::BuildTerrainGradient () -{ - ClearGradient (); - m_gradient.AddGradientPoint (-1.00, Color ( 0, 0, 128, 255)); - m_gradient.AddGradientPoint (-0.20, Color ( 32, 64, 128, 255)); - m_gradient.AddGradientPoint (-0.04, Color ( 64, 96, 192, 255)); - m_gradient.AddGradientPoint (-0.02, Color (192, 192, 128, 255)); - m_gradient.AddGradientPoint ( 0.00, Color ( 0, 192, 0, 255)); - m_gradient.AddGradientPoint ( 0.25, Color (192, 192, 0, 255)); - m_gradient.AddGradientPoint ( 0.50, Color (160, 96, 64, 255)); - m_gradient.AddGradientPoint ( 0.75, Color (128, 255, 255, 255)); - m_gradient.AddGradientPoint ( 1.00, Color (255, 255, 255, 255)); -} - -Color RendererImage::CalcDestColor (const Color& sourceColor, - const Color& backgroundColor, double lightValue) const -{ - double sourceRed = (double)sourceColor.red / 255.0; - double sourceGreen = (double)sourceColor.green / 255.0; - double sourceBlue = (double)sourceColor.blue / 255.0; - double sourceAlpha = (double)sourceColor.alpha / 255.0; - double backgroundRed = (double)backgroundColor.red / 255.0; - double backgroundGreen = (double)backgroundColor.green / 255.0; - double backgroundBlue = (double)backgroundColor.blue / 255.0; - - // First, blend the source color to the background color using the alpha - // of the source color. - double red = LinearInterp (backgroundRed, sourceRed , sourceAlpha); - double green = LinearInterp (backgroundGreen, sourceGreen, sourceAlpha); - double blue = LinearInterp (backgroundBlue, sourceBlue , sourceAlpha); - - if (m_isLightEnabled) { - - // Now calculate the light color. - double lightRed = lightValue * (double)m_lightColor.red / 255.0; - double lightGreen = lightValue * (double)m_lightColor.green / 255.0; - double lightBlue = lightValue * (double)m_lightColor.blue / 255.0; - - // Apply the light color to the new color. - red *= lightRed ; - green *= lightGreen; - blue *= lightBlue ; - } - - // Clamp the color channels to the (0..1) range. - red = (red < 0.0)? 0.0: red ; - red = (red > 1.0)? 1.0: red ; - green = (green < 0.0)? 0.0: green; - green = (green > 1.0)? 1.0: green; - blue = (blue < 0.0)? 0.0: blue ; - blue = (blue > 1.0)? 1.0: blue ; - - // Rescale the color channels to the noise::uint8 (0..255) range and return - // the new color. - Color newColor ( - (noise::uint8)((noise::uint)(red * 255.0) & 0xff), - (noise::uint8)((noise::uint)(green * 255.0) & 0xff), - (noise::uint8)((noise::uint)(blue * 255.0) & 0xff), - GetMax (sourceColor.alpha, backgroundColor.alpha)); - return newColor; -} - -double RendererImage::CalcLightIntensity (double center, double left, - double right, double down, double up) const -{ - // Recalculate the sine and cosine of the various light values if - // necessary so it does not have to be calculated each time this method is - // called. - if (m_recalcLightValues) { - m_cosAzimuth = cos (m_lightAzimuth * DEG_TO_RAD); - m_sinAzimuth = sin (m_lightAzimuth * DEG_TO_RAD); - m_cosElev = cos (m_lightElev * DEG_TO_RAD); - m_sinElev = sin (m_lightElev * DEG_TO_RAD); - m_recalcLightValues = false; - } - - // Now do the lighting calculations. - const double I_MAX = 1.0; - double io = I_MAX * SQRT_2 * m_sinElev / 2.0; - double ix = (I_MAX - io) * m_lightContrast * SQRT_2 * m_cosElev - * m_cosAzimuth; - double iy = (I_MAX - io) * m_lightContrast * SQRT_2 * m_cosElev - * m_sinAzimuth; - double intensity = (ix * (left - right) + iy * (down - up) + io); - if (intensity < 0.0) { - intensity = 0.0; - } - return intensity; -} - -void RendererImage::ClearGradient () -{ - m_gradient.Clear (); -} - -void RendererImage::Render () -{ - if ( m_pSourceNoiseMap == NULL - || m_pDestImage == NULL - || m_pSourceNoiseMap->GetWidth () <= 0 - || m_pSourceNoiseMap->GetHeight () <= 0 - || m_gradient.GetGradientPointCount () < 2) { - throw noise::ExceptionInvalidParam (); - } - - int width = m_pSourceNoiseMap->GetWidth (); - int height = m_pSourceNoiseMap->GetHeight (); - - // If a background image was provided, make sure it is the same size the - // source noise map. - if (m_pBackgroundImage != NULL) { - if ( m_pBackgroundImage->GetWidth () != width - || m_pBackgroundImage->GetHeight () != height) { - throw noise::ExceptionInvalidParam (); - } - } - - // Create the destination image. It is safe to reuse it if this is also the - // background image. - if (m_pDestImage != m_pBackgroundImage) { - m_pDestImage->SetSize (width, height); - } - - for (int y = 0; y < height; y++) { - const Color* pBackground = NULL; - if (m_pBackgroundImage != NULL) { - pBackground = m_pBackgroundImage->GetConstSlabPtr (y); - } - const float* pSource = m_pSourceNoiseMap->GetConstSlabPtr (y); - Color* pDest = m_pDestImage->GetSlabPtr (y); - for (int x = 0; x < width; x++) { - - // Get the color based on the value at the current point in the noise - // map. - Color destColor = m_gradient.GetColor (*pSource); - - // If lighting is enabled, calculate the light intensity based on the - // rate of change at the current point in the noise map. - double lightIntensity; - if (m_isLightEnabled) { - - // Calculate the positions of the current point's four-neighbors. - int xLeftOffset, xRightOffset; - int yUpOffset , yDownOffset ; - if (m_isWrapEnabled) { - if (x == 0) { - xLeftOffset = (int)width - 1; - xRightOffset = 1; - } else if (x == (int)width - 1) { - xLeftOffset = -1; - xRightOffset = -((int)width - 1); - } else { - xLeftOffset = -1; - xRightOffset = 1; - } - if (y == 0) { - yDownOffset = (int)height - 1; - yUpOffset = 1; - } else if (y == (int)height - 1) { - yDownOffset = -1; - yUpOffset = -((int)height - 1); - } else { - yDownOffset = -1; - yUpOffset = 1; - } - } else { - if (x == 0) { - xLeftOffset = 0; - xRightOffset = 1; - } else if (x == (int)width - 1) { - xLeftOffset = -1; - xRightOffset = 0; - } else { - xLeftOffset = -1; - xRightOffset = 1; - } - if (y == 0) { - yDo