mirror of
https://github.com/RetroDECK/ES-DE.git
synced 2024-11-29 17:45:38 +00:00
107 lines
3.9 KiB
C++
107 lines
3.9 KiB
C++
namespace glm
|
|
{
|
|
template<typename T, typename U, qualifier Q>
|
|
GLM_FUNC_QUALIFIER vec<3, T, Q> projectZO(vec<3, T, Q> const& obj, mat<4, 4, T, Q> const& model, mat<4, 4, T, Q> const& proj, vec<4, U, Q> const& viewport)
|
|
{
|
|
vec<4, T, Q> tmp = vec<4, T, Q>(obj, static_cast<T>(1));
|
|
tmp = model * tmp;
|
|
tmp = proj * tmp;
|
|
|
|
tmp /= tmp.w;
|
|
tmp.x = tmp.x * static_cast<T>(0.5) + static_cast<T>(0.5);
|
|
tmp.y = tmp.y * static_cast<T>(0.5) + static_cast<T>(0.5);
|
|
|
|
tmp[0] = tmp[0] * T(viewport[2]) + T(viewport[0]);
|
|
tmp[1] = tmp[1] * T(viewport[3]) + T(viewport[1]);
|
|
|
|
return vec<3, T, Q>(tmp);
|
|
}
|
|
|
|
template<typename T, typename U, qualifier Q>
|
|
GLM_FUNC_QUALIFIER vec<3, T, Q> projectNO(vec<3, T, Q> const& obj, mat<4, 4, T, Q> const& model, mat<4, 4, T, Q> const& proj, vec<4, U, Q> const& viewport)
|
|
{
|
|
vec<4, T, Q> tmp = vec<4, T, Q>(obj, static_cast<T>(1));
|
|
tmp = model * tmp;
|
|
tmp = proj * tmp;
|
|
|
|
tmp /= tmp.w;
|
|
tmp = tmp * static_cast<T>(0.5) + static_cast<T>(0.5);
|
|
tmp[0] = tmp[0] * T(viewport[2]) + T(viewport[0]);
|
|
tmp[1] = tmp[1] * T(viewport[3]) + T(viewport[1]);
|
|
|
|
return vec<3, T, Q>(tmp);
|
|
}
|
|
|
|
template<typename T, typename U, qualifier Q>
|
|
GLM_FUNC_QUALIFIER vec<3, T, Q> project(vec<3, T, Q> const& obj, mat<4, 4, T, Q> const& model, mat<4, 4, T, Q> const& proj, vec<4, U, Q> const& viewport)
|
|
{
|
|
# if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT
|
|
return projectZO(obj, model, proj, viewport);
|
|
# else
|
|
return projectNO(obj, model, proj, viewport);
|
|
# endif
|
|
}
|
|
|
|
template<typename T, typename U, qualifier Q>
|
|
GLM_FUNC_QUALIFIER vec<3, T, Q> unProjectZO(vec<3, T, Q> const& win, mat<4, 4, T, Q> const& model, mat<4, 4, T, Q> const& proj, vec<4, U, Q> const& viewport)
|
|
{
|
|
mat<4, 4, T, Q> Inverse = inverse(proj * model);
|
|
|
|
vec<4, T, Q> tmp = vec<4, T, Q>(win, T(1));
|
|
tmp.x = (tmp.x - T(viewport[0])) / T(viewport[2]);
|
|
tmp.y = (tmp.y - T(viewport[1])) / T(viewport[3]);
|
|
tmp.x = tmp.x * static_cast<T>(2) - static_cast<T>(1);
|
|
tmp.y = tmp.y * static_cast<T>(2) - static_cast<T>(1);
|
|
|
|
vec<4, T, Q> obj = Inverse * tmp;
|
|
obj /= obj.w;
|
|
|
|
return vec<3, T, Q>(obj);
|
|
}
|
|
|
|
template<typename T, typename U, qualifier Q>
|
|
GLM_FUNC_QUALIFIER vec<3, T, Q> unProjectNO(vec<3, T, Q> const& win, mat<4, 4, T, Q> const& model, mat<4, 4, T, Q> const& proj, vec<4, U, Q> const& viewport)
|
|
{
|
|
mat<4, 4, T, Q> Inverse = inverse(proj * model);
|
|
|
|
vec<4, T, Q> tmp = vec<4, T, Q>(win, T(1));
|
|
tmp.x = (tmp.x - T(viewport[0])) / T(viewport[2]);
|
|
tmp.y = (tmp.y - T(viewport[1])) / T(viewport[3]);
|
|
tmp = tmp * static_cast<T>(2) - static_cast<T>(1);
|
|
|
|
vec<4, T, Q> obj = Inverse * tmp;
|
|
obj /= obj.w;
|
|
|
|
return vec<3, T, Q>(obj);
|
|
}
|
|
|
|
template<typename T, typename U, qualifier Q>
|
|
GLM_FUNC_QUALIFIER vec<3, T, Q> unProject(vec<3, T, Q> const& win, mat<4, 4, T, Q> const& model, mat<4, 4, T, Q> const& proj, vec<4, U, Q> const& viewport)
|
|
{
|
|
# if GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_ZO_BIT
|
|
return unProjectZO(win, model, proj, viewport);
|
|
# else
|
|
return unProjectNO(win, model, proj, viewport);
|
|
# endif
|
|
}
|
|
|
|
template<typename T, qualifier Q, typename U>
|
|
GLM_FUNC_QUALIFIER mat<4, 4, T, Q> pickMatrix(vec<2, T, Q> const& center, vec<2, T, Q> const& delta, vec<4, U, Q> const& viewport)
|
|
{
|
|
assert(delta.x > static_cast<T>(0) && delta.y > static_cast<T>(0));
|
|
mat<4, 4, T, Q> Result(static_cast<T>(1));
|
|
|
|
if(!(delta.x > static_cast<T>(0) && delta.y > static_cast<T>(0)))
|
|
return Result; // Error
|
|
|
|
vec<3, T, Q> Temp(
|
|
(static_cast<T>(viewport[2]) - static_cast<T>(2) * (center.x - static_cast<T>(viewport[0]))) / delta.x,
|
|
(static_cast<T>(viewport[3]) - static_cast<T>(2) * (center.y - static_cast<T>(viewport[1]))) / delta.y,
|
|
static_cast<T>(0));
|
|
|
|
// Translate and scale the picked region to the entire window
|
|
Result = translate(Result, Temp);
|
|
return scale(Result, vec<3, T, Q>(static_cast<T>(viewport[2]) / delta.x, static_cast<T>(viewport[3]) / delta.y, static_cast<T>(1)));
|
|
}
|
|
}//namespace glm
|