/* raster callback (virtual HBLANK) */
static void raster_callback (int line)
{
int pos =- 1;
RGB color;
if (line==1)
pos = pos_background[0];
else if (line==32)
pos = pos_background[1];
else if (line==48)
pos = pos_background[2];
else if (line==64)
pos = pos_background[3];
else if (line==112)
pos = pos_background[4];
else if (line >= 152)
pos = lerp (line, 152,224, pos_background[4], pos_background[5]);
if (pos != -1)
TLN_SetLayerPosition (LAYER_BACKGROUND, fix2int(pos), 0);
/* background color gradients */
if (line < 112)
{
InterpolateColor (line, 0,112, &sky[0], &sky[1], &color);
TLN_SetBGColor (color.r, color.g, color.b);
}
else if (line >= 144)
{
InterpolateColor (line, 144,HEIGHT, &sky[2], &sky[3], &color);
TLN_SetBGColor (color.r, color.g, color.b);
}
}
void CGradientEditor::OnDraw(HDC hDC, const LPRECT clientRect)
{
this->clientRect = clientRect;
for (int x = clientRect->left; x < clientRect->right; x++) {
double point = Interpolate(x, clientRect->left, clientRect->right, 0.0, 1.0);
COLORREF color = MultiplyColors(tint, gradient->ColorAtPoint(point));
SelectObject(hDC, GetStockObject(DC_PEN));
SetDCPenColor(hDC, color);
MoveToEx(hDC, x, clientRect->bottom - 23, NULL);
LineTo(hDC, x, clientRect->bottom);
SetPixel(hDC, x, clientRect->bottom - 24, InterpolateColor(color, 0xFFFFFF, 0.125));
}
SetTextColor(hDC, 0xFFFFFF);
int count = bitmap.GetCellCount();
for (int i = 1; i < count; i++) {
int x = i * (clientRect->right - clientRect->left) / count;
BitBlt(hDC, x - 3, clientRect->bottom - 4, 7, 4, cellMarkerBmpDC, 0, 0, SRCINVERT);
}
for (std::vector<CStepHandle*>::iterator i = stepHandles.begin(); i != stepHandles.end(); i++) {
(*i)->SetPositioningInfo(clientRect->left, clientRect->right, clientRect->bottom - 24);
}
CCompoundDispItem::OnDraw(hDC, clientRect);
}
void ImageData::ChangeColorSpace(
const ImageSpectralMode& new_color_mode, const bool luminance_only) {
CHECK(IsColorImage(spectral_mode_))
<< "Cannot convert non-color (monochrome or hyperspectral) "
<< "images to a different color space.";
CHECK(IsColorImage(new_color_mode))
<< "Invalid color space. new_color_mode must be SPECTRAL_MODE_COLOR_*.";
// If it's already the same color mode, there's nothing to do.
if (new_color_mode == spectral_mode_) {
LOG(WARNING)
<< "This image is already set to the given color mode. "
<< "Image was not modified.";
return;
}
// Set the OpenCV conversion mode value.
int opencv_color_conversion_mode = 0;
if (spectral_mode_ == SPECTRAL_MODE_COLOR_BGR &&
new_color_mode == SPECTRAL_MODE_COLOR_YCRCB) {
// BGR => YCrCb.
opencv_color_conversion_mode = CV_BGR2YCrCb;
luminance_channel_only_ = luminance_only;
} else if (spectral_mode_ == SPECTRAL_MODE_COLOR_YCRCB &&
new_color_mode == SPECTRAL_MODE_COLOR_BGR) {
// YCrCb => BGR.
opencv_color_conversion_mode = CV_YCrCb2BGR;
} else {
LOG(WARNING)
<< "Unsupported color mode: " << new_color_mode << ". "
<< "Image was not modified.";
return;
}
// If going to BGR and luminance_channels_only_ is enabled, interpolate color
// channels first to the appropriate size.
if (new_color_mode == SPECTRAL_MODE_COLOR_BGR && luminance_channel_only_) {
InterpolateColor(channels_, &channels_);
}
// Perform the conversion. Conversion is only supported in CV_32F mode, so we
// need to convert to CV_32F and then back again.
// Merge the 3 channels into a single cv::Mat image.
cv::Mat converted_image;
cv::merge(channels_, converted_image);
// Convert to CV_32F format.
const int original_type = converted_image.type();
converted_image.convertTo(converted_image, CV_32F);
// Convert to new color space.
cv::cvtColor(converted_image, converted_image, opencv_color_conversion_mode);
// Convert back to original format (double precision).
converted_image.convertTo(converted_image, original_type);
// Split the image back into individual ImageData channels.
channels_.clear();
cv::split(converted_image, channels_);
spectral_mode_ = new_color_mode;
}
void ImageData::InterpolateColorFrom(const ImageData& color_image) {
CHECK_EQ(GetNumChannels(), 1) // If other 2 channels are hidden, ignore them.
<< "Color can only be interpolated for single-channel images.";
CHECK_EQ(color_image.channels_.size(), 3) // Consider hidden channels.
<< "The given image must have color information for interpolation.";
channels_.resize(3);
InterpolateColor(color_image.channels_, &channels_);
spectral_mode_ = color_image.spectral_mode_;
luminance_channel_only_ = false;
}
vec4 SampleGradientColor( float at ) \n\
{ \n\
if( gradientStops == 0 ) return brushColor; \n\
if( gradientStops == 1 ) return GradientSampler_GetColor(0); \n\
if( at < 0.0 ) at = 0.0; \n\
if( at > 1.0 ) at = 1.0; \n\
if( at < GradientSampler_GetStop(0) || at > GradientSampler_GetStop(gradientStops-1) ){ \n\
vec4 C1 = GradientSampler_GetColor(gradientStops-1); \n\
vec4 C2 = GradientSampler_GetColor(0); \n\
float start = GradientSampler_GetStop(gradientStops-1); \n\
float end = GradientSampler_GetStop(0) + 1.0; \n\
if( at < start ) at += 1.0; \n\
return InterpolateColor( C1, C2, start, at, end ); \n\
} \n\
for(int i=1; i<gradientStops; ++i){ \n\
vec4 C1 = GradientSampler_GetColor(i-1); \n\
vec4 C2 = GradientSampler_GetColor(i); \n\
float start = GradientSampler_GetStop(i-1); \n\
float end = GradientSampler_GetStop(i); \n\
if( at >= start && at <= end ) return InterpolateColor( C1, C2, start, at, end ); \n\
} \n\
return brushColor; \n\
}\n\
