FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added setImageToColour function

Browse Source
This commit is contained in:
Robert Osfield
2008-12-09 09:25:12 +00:00
parent 6b3704ce09
commit c0ac01c576
2 changed files with 28 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/osgVolume/ImageUtils
View File

@@ -129,6 +129,9 @@ extern OSGVOLUME_EXPORT bool offsetAndScaleImage(osg::Image* image, const osg::V
/** Compute source image to destination image.*/
extern OSGVOLUME_EXPORT bool copyImage(const osg::Image* srcImage, int src_s, int src_t, int src_r, int width, int height, int depth,
osg::Image* destImage, int dest_s, int dest_t, int dest_r, bool doRescale = false);
/** Compute the min max colour values in the image.*/
extern OSGVOLUME_EXPORT bool clearImageToColor(osg::Image* image, const osg::Vec4& colour);
}

32
src/osgVolume/ImageUtils.cpp
View File

@@ -17,8 +17,6 @@
#include <osg/Notify>
#include <osgVolume/ImageUtils>
using namespace osgVolume;
namespace osgVolume
{
@@ -87,9 +85,7 @@ struct OffsetAndScaleOperator
}
};
}
bool osgVolume::computeMinMax(const osg::Image* image, osg::Vec4& minValue, osg::Vec4& maxValue)
bool computeMinMax(const osg::Image* image, osg::Vec4& minValue, osg::Vec4& maxValue)
{
if (!image) return false;
@@ -111,7 +107,7 @@ bool osgVolume::computeMinMax(const osg::Image* image, osg::Vec4& minValue, osg:
minValue.a()<=maxValue.a();
}
bool osgVolume::offsetAndScaleImage(osg::Image* image, const osg::Vec4& offset, const osg::Vec4& scale)
bool offsetAndScaleImage(osg::Image* image, const osg::Vec4& offset, const osg::Vec4& scale)
{
if (!image) return false;
@@ -199,7 +195,7 @@ struct WriteRowOperator
inline void rgba(float& r,float& g,float& b,float& a) const { r = _colours[_pos].r(); g = _colours[_pos].g(); b = _colours[_pos].b(); a = _colours[_pos++].a(); }
};
bool osgVolume::copyImage(const osg::Image* srcImage, int src_s, int src_t, int src_r, int width, int height, int depth,
bool copyImage(const osg::Image* srcImage, int src_s, int src_t, int src_r, int width, int height, int depth,
osg::Image* destImage, int dest_s, int dest_t, int dest_r, bool doRescale)
{
if ((src_s+width) > (dest_s + destImage->s()))
@@ -323,3 +319,25 @@ bool osgVolume::copyImage(const osg::Image* srcImage, int src_s, int src_t, int
}
struct SetToColourOperator
{
SetToColourOperator(const osg::Vec4& colour):
_colour(colour) {}
inline void luminance(float& l) const { l = (_colour.r()+_colour.g()+_colour.b())*0.333333; }
inline void alpha(float& a) const { a = _colour.a(); }
inline void luminance_alpha(float& l,float& a) const { l = (_colour.r()+_colour.g()+_colour.b())*0.333333; a = _colour.a(); }
inline void rgb(float& r,float& g,float& b) const { r = _colour.r(); g = _colour.g(); b = _colour.b(); }
inline void rgba(float& r,float& g,float& b,float& a) const { r = _colour.r(); g = _colour.g(); b = _colour.b(); a = _colour.a(); }
osg::Vec4 _colour;
};
bool clearImageToColor(osg::Image* image, const osg::Vec4& colour)
{
modifyImage(image, SetToColourOperator(colour));
}
}