public MQOVertex Cross(MQOVertex v)
{
return(new MQOVertex(
Y * v.Z - Z * v.Y,
Z * v.X - X * v.Z,
X * v.Y - Y * v.X));
}
public MQOVertex SubEq(MQOVertex v)
{
X -= v.X;
Y -= v.Y;
Z -= v.Z;
return(this);
}
internal void calcNormal(List <MQOVertex> vertex)
{
MQOVertex v1, v2, v3;
switch (VertexID.Length)
{
case 3:
v1 = vertex[VertexID[1]].Sub(vertex[VertexID[0]]);
v2 = vertex[VertexID[2]].Sub(vertex[VertexID[0]]);
normal = v2.Cross(v1).Normalize();
break;
case 4:
v1 = vertex[VertexID[1]].Sub(vertex[VertexID[0]]);
v2 = vertex[VertexID[2]].Sub(vertex[VertexID[0]]);
v3 = vertex[VertexID[3]].Sub(vertex[VertexID[0]]);
normal = v2.Cross(v1).Normalize();
try
{
normal.AddEq(v3.Cross(v2).Normalize());
normal = normal.Normalize();
}
catch
{
normal = null; // 法線がおかしな向きになる時はnullとする
}
break;
default:
break;
}
}
public MQOVertex AddEq(MQOVertex v)
{
X += v.X;
Y += v.Y;
Z += v.Z;
return(this);
}
internal void calcNormal(List<MQOVertex> vertex)
{
MQOVertex v1, v2, v3;
switch (VertexID.Length)
{
case 3:
v1 = vertex[VertexID[1]].Sub(vertex[VertexID[0]]);
v2 = vertex[VertexID[2]].Sub(vertex[VertexID[0]]);
normal = v2.Cross(v1).Normalize();
break;
case 4:
v1 = vertex[VertexID[1]].Sub(vertex[VertexID[0]]);
v2 = vertex[VertexID[2]].Sub(vertex[VertexID[0]]);
v3 = vertex[VertexID[3]].Sub(vertex[VertexID[0]]);
normal = v2.Cross(v1).Normalize();
try
{
normal.AddEq(v3.Cross(v2).Normalize());
normal = normal.Normalize();
}
catch
{
normal = null; // 法線がおかしな向きになる時はnullとする
}
break;
default:
break;
}
}
public Decimal Product(MQOVertex v)
{
return(X * v.X + Y * v.Y + Z * v.Z);
}
public MQOVertex Sub(MQOVertex v)
{
return(new MQOVertex(X - v.X, Y - v.Y, Z - v.Z));
}
// 各種ベクトル演算
public MQOVertex Add(MQOVertex v)
{
return(new MQOVertex(X + v.X, Y + v.Y, Z + v.Z));
}
public MQOVertex SubEq(MQOVertex v)
{
X -= v.X;
Y -= v.Y;
Z -= v.Z;
return this;
}
public MQOVertex Sub(MQOVertex v)
{
return new MQOVertex(X - v.X, Y - v.Y, Z - v.Z);
}
public Decimal Product(MQOVertex v)
{
return X * v.X + Y * v.Y + Z * v.Z;
}
public MQOVertex Cross(MQOVertex v)
{
return new MQOVertex(
Y * v.Z - Z * v.Y,
Z * v.X - X * v.Z,
X * v.Y - Y * v.X);
}
public MQOVertex AddEq(MQOVertex v)
{
X += v.X;
Y += v.Y;
Z += v.Z;
return this;
}
// 各種ベクトル演算
public MQOVertex Add(MQOVertex v)
{
return new MQOVertex(X + v.X, Y + v.Y, Z + v.Z);
}
