Method DrawSphereArrow

trinity/Tr2DebugRenderer.cpp:604–656

}

void Tr2DebugRenderer::DrawSphereArrow( Tr2DebugObjectReference owner, const Vector3& center, const Vector3& direction, float radius, uint32_t segments, Effect effect, Tr2DebugColor color )
{
	if( segments < 3 )
	{
		segments = 3;
	}

	Matrix transform = LineTransform( center - direction, center + direction );

	std::vector<Vector2> vertices;
	vertices.reserve( segments + 4 );
	std::vector<Vector2> normals;
	normals.reserve( ( segments + 4 - 1 ) * 2 );

	float arrowRadius = radius / 5;

	float threshold = std::asin( arrowRadius / radius );
	for( uint32_t i = 0; i < segments; ++i )
	{
		float angle = XM_PI - float( i ) / float( segments - 1 ) * XM_PI;
		bool done = false;
		if( angle < threshold )
		{
			angle = threshold;
			done = true;
		}

		vertices.push_back( Vector2( cos( angle ) * radius, sin( angle ) * radius ) );
		normals.push_back( Vector2( cos( angle ), sin( angle ) ) );
		if( i && !done )
		{
			normals.push_back( Vector2( cos( angle ), sin( angle ) ) );
		}
		if( done )
		{
			break;
		}
	}
	normals.push_back( Vector2( 0, 1 ) );
	vertices.push_back( Vector2( 2 * radius, arrowRadius ) );
	normals.push_back( Vector2( 0, 1 ) );

	normals.push_back( Vector2( -1, 0 ) );
	vertices.push_back( Vector2( 2 * radius, 2 * arrowRadius ) );
	normals.push_back( Vector2( -1, 0 ) );

	vertices.push_back( Vector2( 2 * radius + 3 * arrowRadius, 0 ) );
	Vector2 n = LineNormal( vertices[vertices.size() - 2], vertices[vertices.size() - 1] );
	normals.push_back( n );
	normals.push_back( n );

	DrawExtrusionShape( owner, transform, &vertices[0], &normals[0], uint32_t( vertices.size() ), segments, effect, color );
}

void Tr2DebugRenderer::DrawAxis( Tr2DebugObjectReference owner, const Matrix& transform, Effect effect )
{