ggameobject.cpp

#include "ggameobject.h"
#include "gmathutils.h"
using namespace GMath;
using namespace std;

void GGameObject::SetT(vec3f pos)
{
    this->_position = pos;
    _trs_dirty = true;
}

void GGameObject::SetR(vec3f rotation)
{
    this->_rotation.SetX(GMathUtils::Deg2Rad(rotation.x()));
    this->_rotation.SetY(GMathUtils::Deg2Rad(rotation.y()));
    this->_rotation.SetZ(GMathUtils::Deg2Rad(rotation.z()));
    _trs_dirty = true;
}

void GGameObject::SetS(vec3f scale)
{
    this->_scale = scale;
    _trs_dirty = true;
}

void GGameObject::SetTRS(vec3f pos, vec3f rotation, vec3f scale)
{
    SetT(pos);
    SetR(rotation);
    SetS(scale);
}

void GGameObject::TRSInvertTRS(const mat4f* &trs, const mat4f* &invertTRS)
{
    if(_trs_dirty)
    {
        transform = GMathUtils::TRS(_position, _rotation, _scale);
        invertTransform = transform.invert();
        _trs_dirty = false;
    }
    trs = &transform;
    invertTRS = &invertTransform;
}

vec3f GGameObject::forward()
{
    const mat4f* trsMat; // local2World
    const mat4f* invertTRSMat; // world2Local
    TRSInvertTRS(trsMat, invertTRSMat);

    vec4f ret = (*trsMat) * vec4f::forward;
    return ret.xyz();
}