Public Member Functions
	UVTransform (const TextureDisplacementLayer &layer, float aspect_, bool normalized_uv=false)
Vec2f	operator() (const Vec2f &planar) const

Public Attributes
float	scale
float	cs
float	sn
float	aspect
Vec2f	offset

Detailed Description

Constructor & Destructor Documentation

◆ UVTransform()

Slic3r::anonymous_namespace{TextureDisplacement.cpp}::UVTransform::UVTransform	(	const TextureDisplacementLayer &	layer,
		float	aspect_,
		bool	normalized_uv = false )

inline

    {
        scale = (normalized_uv || layer.tiling_scale <= 1e-6f) ? 1.f : (1.f / layer.tiling_scale);
        const float rad = layer.rotation_deg * float(M_PI) / 180.f;
        cs     = std::cos(rad);
        sn     = std::sin(rad);
        aspect = normalized_uv ? 1.f : aspect_;
        offset = layer.offset;
    }

References aspect, cs, M_PI, offset, Slic3r::TextureDisplacementLayer::offset, Slic3r::TextureDisplacementLayer::rotation_deg, scale, sn, and Slic3r::TextureDisplacementLayer::tiling_scale.

Member Function Documentation

◆ operator()()

Vec2f Slic3r::anonymous_namespace{TextureDisplacement.cpp}::UVTransform::operator() ( const Vec2f & planar ) const

inline

    {
        const Vec2f scaled = planar * scale;
        Vec2f       rotated(scaled.x() * cs - scaled.y() * sn, scaled.x() * sn + scaled.y() * cs);
        // See apply_uv_transform() for why the aspect correction follows the rotation.
        if (aspect > 0.f && aspect != 1.f)
            rotated.y() *= aspect;
        return rotated + offset;
    }