float DesertScenePlane::GetHeight(
cGameObject* target )
{
const auto& groupRepo = static_cast<cObjRenderer*>(
m_owner->GetRenderer( ))->GetGroupRepo( );
BOOL collised = FALSE;
float hitDist = 0.f;
for ( auto* groupElem : groupRepo )
{
const auto& vertices = groupElem->GetVertex( );
for ( int i = 0; i < vertices.size( ); i += 3 )
{
const float rayYPos = 10000.f;
D3DXVECTOR3 rayPos( target->GetPosition( ).x, rayYPos,
target->GetPosition( ).z );
D3DXVECTOR3 v1;
D3DXVec3TransformCoord( &v1, &vertices[i].p, &m_owner->GetWorld( ));
D3DXVECTOR3 v2;
D3DXVec3TransformCoord( &v2, &vertices[i+1].p, &m_owner->GetWorld( ) );
D3DXVECTOR3 v3;
D3DXVec3TransformCoord( &v3, &vertices[i+2].p, &m_owner->GetWorld( ) );
collised = D3DXIntersectTri(
&v1,
&v2,
&v3,
&rayPos,
&D3DXVECTOR3( 0.f, -1.f, 0.f ),
nullptr,
nullptr,
&hitDist
);
if ( collised == TRUE )
{
target->GetPosition( ).y = rayYPos - hitDist;
return ( rayYPos-hitDist );
}
}
}
return 0.f;
}
bool ComTerrain::GetHeight(float & height, const D3DXVECTOR3 & pos)
{
D3DXVECTOR3 rayPos(pos.x, pos.y + m_rayDistance, pos.z);
D3DXVECTOR3 rayDir(0, -1, 0);
float distance = 0.0f;
for (int i = 0; i < m_vecIndices.size(); i += 3)
{
D3DXVECTOR3 v1 = m_vecVertices[m_vecIndices[i]].p;
D3DXVECTOR3 v2 = m_vecVertices[m_vecIndices[i + 1]].p;
D3DXVECTOR3 v3 = m_vecVertices[m_vecIndices[i + 2]].p;
if (D3DXIntersectTri(&v1, &v2, &v3, &rayPos, &rayDir, NULL, NULL, &distance))
{
height = rayPos.y - distance;
return true;
}
}
return false;
}
