/*?Standard?Includes?*/
#include?
#include?
#include?
#include?

/*?Custom?Includes?*/
#include?“sampler.h“
#include?“stb_image.h“
#include?“stb_image_write.h“
#include?“cube2sphere-converter.h“

/*?Standard?Namespace?*/
using?namespace?std;

Cube2SphereConverter::Cube2SphereConverter（vector?source?int?numSamples?bool?useJitter?bool?&valid）
{
??/*?Read?in?RGB?Data?and?Fields?*/
??samplingType?=?useJitter;?N?=?numSamples;
??for（int?i?=?0;?i?????rgb_data[i]?=?stbi_load（source[i].c_str（）?&input_width?&input_height?&input_bpp?3）;
??}
??/*?Error?Checking?*/
??valid?=?true;
??for（int?i?=?0;?i?????if（rgb_data[i]?==?NULL）?{
??????valid?=?false;
????}
??}
}

Cube2SphereConverter::~Cube2SphereConverter（）?
{
??for（int?i?=?0;?i?}

void?Cube2SphereConverter::generateRayOctahedron（Point3D?&p_out?bool?ypos?Point2D?p_in）?
{
??double?x?=?（2?*?p_in.x）/output_width?-?1;
??double?z?=?（2?*?p_in.y）/output_height?-?1;
??if（ypos）?{
????p_out.x?=?（z?+?x）?/?（2.0）;
????p_out.z?=?（z?-?x）?/?（2.0）;
????p_out.y?=?1?-?（abs（p_out.x）?+?abs（p_out.z））;
??}?else?{
????p_out.x?=?（z?-?x）?/?（2.0）;
????p_out.z?=?（z?+?x）?/?（2.0）;
????p_out.y?=?（abs（p_out.x）?+?abs（p_out.z））?-?1;
??}
??double?mag?=?sqrt（（p_out.x?*?p_out.x）?+?（p_out.y?*?p_out.y）?+?（p_out.z?*?p_out.z））;
??p_out.x?=?p_out.x/mag;?p_out.y?=?p_out.y/mag;?p_out.z?=?p_out.z/mag;
}

void?Cube2SphereConverter::generateRayParaboloid（Point3D?&p_out?bool?zpos?Point2D?p_in）
{
??p_out.x?=?p_in.x;
??p_out.y?=?p_in.y;
??if（zpos）?{
????p_out.z?=?0.5?-?0.5*（（p_out.x?*?p_out.x）?+?（p_out.y?*?p_out.y））;
??}?else?{
????p_out.z?=?-0.5?+?0.5*（（p_out.x?*?p_out.x）?+?（p_out.y?*?p_out.y））;
??}
??double?mag?=?sqrt（（p_out.x?*?p_out.x）?+?（p_out.y?*?p_out.y）?+?（p_out.z?*?p_out.z））;
??p_out.x?=?p_out.x/mag;?p_out.y?=?p_out.y/mag;?p_out.z?=?p_out.z/mag;
}

void?Cube2SphereConverter::generateRaySpherical（Point3D?&p_out?Point2D?p_in）?
{
??double?x?=?（2?*?p_in.x）/output_width?-?1;
??double?y?=?（2?*?p_in.y）/output_height?-?1;
??double?theta?=?M_PI?*?x;
??double?phi?=?（M_PI?*?y）/2;
??p_out.x?=?cos（phi）?*?cos（theta）;
??p_out.y?=?sin（phi）;
??p_out.z?=?cos（phi）?*?sin（theta）;
}

void?Cube2SphereConverter::readVals（byte?*ptr?int?&i?int?&j?byte?&r?byte?&g?byte?&b）?
{
??if（i?==?input_width）?i?=?input_width-1;
??if（j?==?input_height）?j?=?input_height-1;
??size_t?offset?=?3*（i?+?（j*input_width））;
??r?=?*（ptr?+?offset）;
??g?=?*（ptr?+?offset?+?1）;
??b?=?*（ptr?+?offset?+?2）;
}

void?Cube2SphereConverter::getRgbFromPoint（Point2D?p_in?byte?&r?byte?&g?byte?&b?bool?pos?int?tex）?
{
??/*?Texture?Selection?*/
??Point3D?p;?int?i?j?n;
??if（tex?==?0）?{
????generateRaySpherical（p?p_in）;
??}?else?if（tex?==?1）?{
????p_in.x?=?（2?*?p_in.x）/output_width?-?1;
????p_in.y?=?（2?*?p_in.y）/output_height?-?1;
????double?rad?=?sqrt（（p_in.x?*?p_in.x）?+?（p_in.y?*?p_in.y））;
????if（rad?>=?1.01）?{r?=?255;?g?=?255;?b?=?255;?return;}
????generateRayParaboloid（p?pos?p_in）;
??

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-08-25?20:08??cubemap-stitch-master\
?????文件????????2015??2016-08-25?20:08??cubemap-stitch-master\README.md
?????文件??????????75??2016-08-25?20:08??cubemap-stitch-master\byte.h
?????文件?????????315??2016-08-25?20:08??cubemap-stitch-master\compile.sh
?????文件????????6136??2016-08-25?20:08??cubemap-stitch-master\cube2sphere-converter.cpp
?????文件????????1223??2016-08-25?20:08??cubemap-stitch-master\cube2sphere-converter.h
?????文件????????3360??2016-08-25?20:08??cubemap-stitch-master\hev-mapConverter.cpp
?????文件?????????270??2016-08-25?20:08??cubemap-stitch-master\point.h
?????文件????????1949??2016-08-25?20:08??cubemap-stitch-master\sampler.cpp
?????文件????????1228??2016-08-25?20:08??cubemap-stitch-master\sampler.h
?????文件????????5150??2016-08-25?20:08??cubemap-stitch-master\sphere2cube-converter.cpp
?????文件????????1409??2016-08-25?20:08??cubemap-stitch-master\sphere2cube-converter.h
?????文件??????227413??2016-08-25?20:08??cubemap-stitch-master\stb_image.h
?????文件??????119888??2016-08-25?20:08??cubemap-stitch-master\stb_image.o
?????文件???????37508??2016-08-25?20:08??cubemap-stitch-master\stb_image_write.h
?????文件???????31808??2016-08-25?20:08??cubemap-stitch-master\stb_image_write.o