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

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.

Array	hmap::gpu::advection_particle (const Array &z, const Array &advected_field, int iterations, int nparticles, uint seed, bool reverse=false, bool post_filter=true, float post_filter_sigma=0.125f, float advection_length=0.1f, float value_persistence=0.99f, float inertia=0.f, const Array p_advection_mask=nullptr, const Array p_mask=nullptr)
	Performs particle-based advection on a scalar field.

Array	hmap::gpu::advection_particle (const Array &z, const Array &advected_field, int nparticles, uint seed, bool reverse=false, bool post_filter=true, float post_filter_sigma=0.125f, float advection_length=0.1f, float value_persistence=0.99f, float inertia=0.f, const Array p_advection_mask=nullptr, const Array p_mask=nullptr)

Array	hmap::gpu::advection_particle (const Array &dx, const Array &dy, const Array &advected_field, int nparticles, uint seed, bool reverse=false, bool post_filter=true, float post_filter_sigma=0.125f, float advection_length=0.1f, float value_persistence=0.99f, float inertia=0.f, const Array p_advection_mask=nullptr, const Array p_mask=nullptr)

Array	hmap::gpu::advection_warp (const Array &z, const Array &advected_field, float advection_length=0.1f, float value_persistence=0.9f, const Array *p_mask=nullptr)
	Performs 2D field advection based on the gradient of a heightmap using a warp-based technic (simplified approach).

Array	hmap::gpu::advection_warp (const Array &z, const Array &advected_field, const Array &dx, const Array &dy, float advection_length=0.1f, float value_persistence=0.9f, const Array *p_mask=nullptr)

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.

Namespaces

Functions

Detailed Description