CLight.cpp

#include "CLight.h"


CLight::CLight(void)
{
    static DWORD i = 0;
    m_index = i++;
    D3DXMatrixIdentity(&m_mLocal);
    ::ZeroMemory(&m_lit, sizeof(m_lit));
    m_pMesh = NULL;
    m_bound._center = D3DXVECTOR3(0.0f, 0.0f, 0.0f);
    m_bound._radius = 0.0f;


}
CLight::~CLight(void) {}

bool CLight::create(IDirect3DDevice9* pDevice, const D3DLIGHT9& lit, float radius = 0.1f)
{
    if (NULL == pDevice)
        return false;
    if (FAILED(D3DXCreateSphere(pDevice, radius, 10, 10, &m_pMesh, NULL)))
        return false;

    m_bound._center = lit.Position;
    m_bound._radius = radius;

    m_lit.Type = lit.Type;
    m_lit.Diffuse = lit.Diffuse;
    m_lit.Specular = lit.Specular;
    m_lit.Ambient = lit.Ambient;
    m_lit.Position = lit.Position;
    m_lit.Direction = lit.Direction;
    m_lit.Range = lit.Range;
    m_lit.Falloff = lit.Falloff;
    m_lit.Attenuation0 = lit.Attenuation0;
    m_lit.Attenuation1 = lit.Attenuation1;
    m_lit.Attenuation2 = lit.Attenuation2;
    m_lit.Theta = lit.Theta;
    m_lit.Phi = lit.Phi;
    return true;
}
void CLight::destroy(void)
{
    if (m_pMesh != NULL) {
        m_pMesh->Release();
        m_pMesh = NULL;
    }
}
bool CLight::setLight(IDirect3DDevice9* pDevice, const D3DXMATRIX& mWorld)
{
    if (NULL == pDevice)
        return false;

    D3DXVECTOR3 pos(m_bound._center);
    D3DXVec3TransformCoord(&pos, &pos, &m_mLocal);
    D3DXVec3TransformCoord(&pos, &pos, &mWorld);
    m_lit.Position = pos;

    pDevice->SetLight(m_index, &m_lit);
    pDevice->LightEnable(m_index, TRUE);
    return true;
}

void CLight::draw(IDirect3DDevice9* pDevice)
{
    if (NULL == pDevice)
        return;
    D3DXMATRIX m;
    D3DXMatrixTranslation(&m, m_lit.Position.x, m_lit.Position.y, m_lit.Position.z);
    pDevice->SetTransform(D3DTS_WORLD, &m);
    pDevice->SetMaterial(&d3d::WHITE_MTRL);
    m_pMesh->DrawSubset(0);
}

D3DXVECTOR3 CLight::getPosition(void) const { return D3DXVECTOR3(m_lit.Position); }