transform.hpp File Reference

Header file for array transformation functions including rotation, flipping, warping, and transposition. More...

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Namespaces
namespace	hmap
namespace	hmap::gpu

Functions
void	hmap::flip_lr (Array &array)
	Flip the array horizontally (left/right).
void	hmap::flip_ud (Array &array)
	Flip the array vertically (up/down).
void	hmap::rot180 (Array &array)
	Rotate the array by 180 degrees.
void	hmap::rot270 (Array &array)
	Rotate the array by 270 degrees.
void	hmap::rot90 (Array &array)
	Rotate the array by 90 degrees.
void	hmap::rotate (Array &array, float angle, bool zoom_in=true, bool zero_padding=false)
	Rotate the array by a specified angle.
Array	hmap::transpose (const Array &array)
	Return the transposed array.
Array	hmap::translate (const Array &array, float dx, float dy, bool periodic=false, const Array *p_noise_x=nullptr, const Array *p_noise_y=nullptr, Vec4< float > bbox={0.f, 1.f, 0.f, 1.f})
	Translates a 2D array by a specified amount along the x and y axes.
void	hmap::warp (Array &array, const Array *p_dx, const Array *p_dy)
	Apply a warping effect to the array.
void	hmap::warp_directional (Array &array, float angle, float amount=0.02f, int ir=4, bool reverse=false)
	Apply a warping effect following the downward local gradient direction (deflate/inflate effect).
void	hmap::warp_directional (Array &array, float angle, const Array *p_mask, float amount=0.02f, int ir=4, bool reverse=false)
	Apply a warping effect following the downward local gradient direction (deflate/inflate effect) with a mask.
void	hmap::warp_downslope (Array &array, float amount=0.02f, int ir=4, bool reverse=false)
	Apply a warping effect following the downward local gradient direction (deflate/inflate effect).
void	hmap::warp_downslope (Array &array, const Array *p_mask, float amount=0.02f, int ir=4, bool reverse=false)
	Apply a warping effect following the downward local gradient direction (deflate/inflate effect) with a mask.
Array	hmap::zoom (const Array &array, float zoom_factor, bool periodic=false, Vec2< float > center={0.5f, 0.5f}, const Array *p_noise_x=nullptr, const Array *p_noise_y=nullptr, Vec4< float > bbox={0.f, 1.f, 0.f, 1.f})
	Applies a zoom effect to a 2D array with an adjustable center.
void	hmap::gpu::rotate (Array &array, float angle, bool zoom_in=true)
	See hmap::rotate.
void	hmap::gpu::warp (Array &array, const Array *p_dx, const Array *p_dy)
	See hmap::warp.

Detailed Description

Header file for array transformation functions including rotation, flipping, warping, and transposition.

Author

Otto Link (otto..nosp@m.link.nosp@m..bv@g.nosp@m.mail.nosp@m..com)

This header file provides declarations for various functions used to transform arrays in different ways. It includes functionalities for rotating arrays, flipping them horizontally or vertically, applying warping effects, and transposing arrays. These transformations are useful in image processing, data manipulation, and other applications requiring geometric modifications of arrays.

Copyright

Copyright (c) 2023 Otto Link