Added Macro's new cube map generation classes and osgcubemap demo.

src/osgUtil/CubeMapGenerator.cpp

@@ -0,0 +1,58 @@
+#include <osgUtil/CubeMapGenerator>
+
+#include <memory>
+#include <cstdlib>
+
+using namespace osgUtil;
+
+CubeMapGenerator::CubeMapGenerator(int texture_size)
+:	osg::Referenced(),
+	texture_size_(texture_size)
+{
+	for (int i=0; i<6; ++i) {				
+		osg::ref_ptr<osg::Image> image = osgNew osg::Image;
+		std::auto_ptr<unsigned char> data(static_cast<unsigned char *>(std::malloc(texture_size*texture_size*4)));
+		image->setImage(texture_size, texture_size, 1, 4, GL_RGBA, GL_UNSIGNED_BYTE, data.get());
+		data.release();
+		images_.push_back(image);
+	}
+}
+
+CubeMapGenerator::CubeMapGenerator(const CubeMapGenerator &copy, const osg::CopyOp &copyop)
+:	osg::Referenced(copy),
+	texture_size_(copy.texture_size_)
+{
+	Image_list::const_iterator i;
+	for (i=copy.images_.begin(); i!=copy.images_.end(); ++i) {
+		images_.push_back(static_cast<osg::Image *>(copyop(i->get())));
+	}
+}
+
+void CubeMapGenerator::generateMap(bool use_osg_system)
+{
+	const float duv = 2.0f/(texture_size_-1);
+	
+	float v = 1;
+	for (int i=0; i<texture_size_; ++i) {
+		float u = 1;
+		for (int j=0; j<texture_size_; ++j) {			
+			if (use_osg_system) {
+				set_pixel(0, j, i, compute_color(osg::Vec3(1, -u, v)));
+				set_pixel(1, j, i, compute_color(osg::Vec3(-1, u, v)));
+				set_pixel(2, j, i, compute_color(osg::Vec3(-u, v, 1)));
+				set_pixel(3, j, i, compute_color(osg::Vec3(-u, -v, -1)));
+				set_pixel(4, j, i, compute_color(osg::Vec3(-u, -1, v)));
+				set_pixel(5, j, i, compute_color(osg::Vec3(u, 1, v)));
+			} else {
+				set_pixel(0, j, i, compute_color(osg::Vec3(1, v, -u)));
+				set_pixel(1, j, i, compute_color(osg::Vec3(-1, v, u)));
+				set_pixel(2, j, i, compute_color(osg::Vec3(-u, 1, v)));
+				set_pixel(3, j, i, compute_color(osg::Vec3(-u, -1, -v)));
+				set_pixel(4, j, i, compute_color(osg::Vec3(-u, v, -1)));
+				set_pixel(5, j, i, compute_color(osg::Vec3(u, v, 1)));
+			}
+			u -= duv;
+		}
+		v -= duv;
+	}
+}

src/osgUtil/HalfWayMapGenerator.cpp

@@ -0,0 +1,16 @@
+#include <osgUtil/HalfWayMapGenerator>
+
+using namespace osgUtil;
+
+HalfWayMapGenerator::HalfWayMapGenerator(const osg::Vec3 &light_direction, int texture_size)
+:	CubeMapGenerator(texture_size),
+	ldir_(light_direction)
+{
+	ldir_.normalize();
+}
+
+HalfWayMapGenerator::HalfWayMapGenerator(const HalfWayMapGenerator &copy, const osg::CopyOp &copyop)
+:	CubeMapGenerator(copy, copyop),
+	ldir_(copy.ldir_)
+{
+}

src/osgUtil/HighlightMapGenerator.cpp

@@ -0,0 +1,23 @@
+#include <osgUtil/HighlightMapGenerator>
+
+using namespace osgUtil;
+
+HighlightMapGenerator::HighlightMapGenerator(const osg::Vec3 &light_direction,
+											 const osg::Vec4 &light_color,
+											 float specular_exponent,
+											 int texture_size)
+:	CubeMapGenerator(texture_size),
+	ldir_(light_direction),
+	lcol_(light_color),
+	sexp_(specular_exponent)
+{
+	ldir_.normalize();
+}
+
+HighlightMapGenerator::HighlightMapGenerator(const HighlightMapGenerator &copy, const osg::CopyOp &copyop)
+:	CubeMapGenerator(copy, copyop),
+	ldir_(copy.ldir_),
+	lcol_(copy.lcol_),
+	sexp_(copy.sexp_)
+{
+}

src/osgUtil/Makefile

@@ -22,6 +22,9 @@ CXXFILES = \
 	Tesselator.cpp\
 	TransformCallback.cpp\
 	TriStripVisitor.cpp\
+	CubeMapGenerator.cpp\
+	HalfWayMapGenerator.cpp\
+	HighlightMapGenerator.cpp\
 	Version.cpp\
 
 DEF     += -DOSGUTIL_LIBRARY