void CTank::calcDirBottom()
{
float x,y,z;
// 移動方向の左右確認
static D3DXVECTOR2 v1,v2;
v1.x = _BottomDir.x;
v1.y = _BottomDir.z;
v2.x = _MoveVec.x;
v2.y = _MoveVec.z;
float fCross = D3DXVec2CCW(&v1,&v2); // 外積
float fDot;
// 左右判定
if(fCross > 0)
{
turnBottom(_fTurnSpeed);
}
else if(fCross < 0)
{
turnBottom(-_fTurnSpeed);
}
else
{
fDot = D3DXVec3Dot(&_BottomDir,&_MoveVec);
if(fDot < 0)
{
turnBottom(_fTurnSpeed);
}
}
x = _matBottom._41;
y = _matBottom._42;
z = _matBottom._43;
static const D3DXVECTOR3 XV(0.0f,0.0f,1.0f);
D3DXVec3Normalize(&_BottomDir,&_BottomDir);
_matBottom._41 = _matBottom._42 = _matBottom._43 = 0;
D3DXMatrixRotationY(&_matBottom,-atan2f(_BottomDir.z,_BottomDir.x) + 0.5F*3.1415f);
_matBottom._41 = x;
_matBottom._42 = y;
_matBottom._43 = z;
}
//=============================================================================
// is hit line
//=============================================================================
bool CollisionCircle::IsHitLine(const D3DXVECTOR2& position,const D3DXVECTOR2& start,const D3DXVECTOR2& end)const
{
D3DXVECTOR2 vector_l = end - start;
D3DXVECTOR2 vector_a = position_ - (start + position);
D3DXVECTOR2 vector_b = position_ - (end + position);
f32 distance = D3DXVec2CCW(&vector_l,&vector_a) / D3DXVec2Length(&vector_l);
if(distance <= radius_)
{
if(D3DXVec2Dot(&vector_a,&vector_l) * D3DXVec2Dot(&vector_b,&vector_l) <= 0)
{
return true;
}
if(D3DXVec2Length(&vector_a) <= radius_ || D3DXVec2Length(&vector_b) <= radius_)
{
return true;
}
}
return false;
}
//=============================================================================
// is hit line
//=============================================================================
bool CollisionPoint::IsHitLine(const D3DXVECTOR2& position,const D3DXVECTOR2& start,const D3DXVECTOR2& end)const
{
D3DXVECTOR2 vector_l = end - start;
D3DXVECTOR2 vector_a = position_ - (start + position);
D3DXVECTOR2 vector_b = position_ - (end + position);
f32 cross = D3DXVec2CCW(&vector_l,&vector_a);
if(cross <= 0.0001f || cross >= -0.0001f)
{
cross = 0.0f;
}
if(cross == 0.0f)
{
if(D3DXVec2Dot(&vector_a,&vector_l) >= 0 && D3DXVec2Length(&vector_l) >= D3DXVec2Length(&vector_a))
{
return true;
}
}
return false;
}
int CBgDisp2::MoveTexUV( D3DXMATRIX matView )
{
int i;
D3DTLVERTEX* tlvptr1 = m_tlv1;
D3DTLVERTEX2* tlvptr2 = m_tlv2;
if( (uanime != 0.0f) || (vanime != 0.0f ) ){
for( i = 0; i < BGTLVNUM; i++ ){
tlvptr2->tu2 += uanime;
tlvptr2->tv2 += vanime;
tlvptr2++;
}
}
if( isround ){
D3DXVECTOR3 vecbef;// = {0.0, 0.0, -1.0};
D3DXVECTOR3 vecaft;
vecbef.x = 0.0f; vecbef.y = 0.0f; vecbef.z = -1.0f;
float lx = vecbef.x;
float ly = vecbef.y;
float lz = vecbef.z;
//！！！！ 平行移動成分は、加味しない。
vecaft.x = matView._11*lx + matView._21*ly + matView._31*lz;// + matView._41;
vecaft.y = matView._12*lx + matView._22*ly + matView._32*lz;// + matView._42;
vecaft.z = matView._13*lx + matView._23*ly + matView._33*lz;// + matView._43;
D3DXVec3Normalize( &vecaft, &vecaft );
D3DXVECTOR2 vec0; // = {0.0f, -1.0f};
D3DXVECTOR2 vec1;
vec0.x = 0.0f; vec0.y = -1.0f;
vec1.x = vecaft.x; vec1.y = vecaft.z;
D3DXVec2Normalize( &vec1, &vec1 );
float dot;
dot = D3DXVec2Dot( &vec0, &vec1 );
float rad;
if( dot <= -1.0f )
dot = -1.0f;
else if( dot >= 1.0f )
dot = 1.0f;
rad = (float)acos( dot );
float ccw;
ccw = D3DXVec2CCW( &vec0, &vec1 );
//float roty;
//if( ccw >= 0.0f ){
// roty = -rad;
//}else{
// roty = rad;
//}
float roty;
if( ccw >= 0.0f ){
roty = rad;
}else{
roty = -rad;
}
float centeru;
centeru = 0.5f + roty * ( 0.5f / PI );
float usize, befu, aftu;
usize = 0.4f;
befu = centeru - usize;
aftu = centeru + usize;
//if( befu < 0.0f )
// befu += 1.0f;
//if( aftu > 1.0f )
// aftu -= 1.0f;
_ASSERT( BGUNUM == 3 );//!!!!!!!!!!!!!!!!!
int uno, vno;
int tlvno = 0;
for( vno = 0; vno < BGVNUM; vno++ ){
for( uno = 0; uno < BGUNUM; uno++ ){
if( uno == 0 ){
m_tlv1[tlvno].tu = befu;
m_tlv2[tlvno].tu1 = befu;
}else if( uno == 1 ){
m_tlv1[tlvno].tu = centeru;
m_tlv2[tlvno].tu1 = centeru;
}else if( uno == 2 ){
m_tlv1[tlvno].tu = aftu;
m_tlv2[tlvno].tu1 = aftu;
}else{
_ASSERT( 0 );
m_tlv1[tlvno].tu = 0.0f;
m_tlv2[tlvno].tu1 = 0.0f;
}
tlvno++;
}
}
}
return 0;
}