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1.9.8
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HighMap library (C++)
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Header file for hydrological modeling functions and utilities. More...
Go to the source code of this file.
Namespaces | |
| namespace | hmap |
| namespace | hmap::gpu |
Functions | |
| Array | hmap::d8_compute_ndip (const Array &d8) |
| Computes the number of drainage paths for each cell based on the D8 flow direction model. | |
| void | hmap::find_flow_sinks (const Array &z, std::vector< int > &is, std::vector< int > &js) |
| Identifies the indices of flow sinks within the heightmap. | |
| Array | hmap::flooding_uniform_level (const Array &z, float zref) |
| Compute water depth for a uniform flooding level. | |
| Array | hmap::flooding_from_boundaries (const Array &z, float zref, bool from_east=true, bool from_west=true, bool from_north=true, bool from_south=true) |
| Compute flooding starting from the lowest boundary points. | |
| Array | hmap::flooding_from_point (const Array &z, int i, int j, float depth_min=std::numeric_limits< float >::max()) |
| Flood terrain starting from a single seed point. | |
| Array | hmap::flooding_from_point (const Array &z, const std::vector< int > &i, const std::vector< int > &j, float depth_min=std::numeric_limits< float >::max()) |
| Flood terrain starting from multiple seed points. | |
| Array | hmap::flooding_lake_system (const Array &z, int iterations=500, float epsilon=1e-3f) |
| Estimate lake water depths on a terrain by filling depressions. | |
| Array | hmap::flow_accumulation_d8 (const Array &z) |
| Computes the flow accumulation for each cell using the D8 flow direction model. | |
| Array | hmap::flow_accumulation_dinf (const Array &z, float talus_ref) |
| Computes the flow accumulation for each cell using the Multiple Flow Direction (MFD) model. | |
| Array | hmap::flow_direction_d8 (const Array &z) |
| Computes the flow direction from each cell to its downslope neighbor using the D8 model. | |
| std::vector< Array > | hmap::flow_direction_dinf (const Array &z, float talus_ref) |
| Computes the flow direction and weights for each direction using the Multiple Flow Direction (MFD) model. | |
| Path | hmap::flow_stream (const Array &z, const Vec2< int > ij_start, const float elevation_ratio=0.5f, const float distance_exponent=2.f, const float upward_penalization=100.f) |
| Computes the optimal flow path from a starting point to the boundary of a given elevation array. | |
| Array | hmap::generate_riverbed (const Path &path, Vec2< int > shape, Vec4< float > bbox={0.f, 1.f, 0.f, 1.f}, bool bezier_smoothing=false, float depth_start=0.01f, float depth_end=1.f, float slope_start=64.f, float slope_end=32.f, float shape_exponent_start=1.f, float shape_exponent_end=10.f, float k_smoothing=0.5f, int post_filter_ir=0, Array *p_noise_x=nullptr, Array *p_noise_y=nullptr, Array *p_noise_r=nullptr) |
| Generates a 2D array representing a riverbed based on a specified path. | |
| Array | hmap::merge_water_depths (const Array &depth1, const Array &depth2, float k_smooth=0.f) |
| Merge two water depth fields. | |
| Array | hmap::water_depth_from_mask (const Array &z, const Array &mask, float mask_threshold=0.f, int iterations_max=10000, float tolerance=1e-2f, float omega=1.8f) |
| Compute water depth over a masked terrain using harmonic interpolation. | |
| void | hmap::water_depth_dry_out (Array &water_depth, float dry_out_ratio=0.5f, const Array *p_mask=nullptr, float depth_max=std::numeric_limits< float >::max()) |
| Apply a drying factor to a water depth field. | |
| Array | hmap::water_depth_increase (const Array &water_depth, const Array &z, float additional_depth) |
| Simulates the increase in water depth over a terrain. | |
| Array | hmap::water_mask (const Array &water_depth) |
| Generates a binary mask representing water presence. | |
| Array | hmap::water_mask (const Array &water_depth, const Array &z, float additional_depth) |
| Computes a gradient-based water mask using an extended water depth model. | |
| Array | hmap::gpu::flow_direction_d8 (const Array &z) |
| See hmap::flow_direction_d8. | |
| Array | hmap::gpu::generate_riverbed (const Path &path, Vec2< int > shape, Vec4< float > bbox={0.f, 1.f, 0.f, 1.f}, bool bezier_smoothing=false, float depth_start=0.01f, float depth_end=1.f, float slope_start=64.f, float slope_end=32.f, float shape_exponent_start=1.f, float shape_exponent_end=10.f, float k_smoothing=0.5f, int post_filter_ir=0, Array *p_noise_x=nullptr, Array *p_noise_y=nullptr, Array *p_noise_r=nullptr) |
| See hmap::generate_riverbed. | |
Header file for hydrological modeling functions and utilities.
This header file declares functions and utilities for hydrological modeling, including tools for computing flow directions, flow accumulation, and identifying flow sinks within heightmaps. It supports multiple flow direction models and the D8 model for flow direction and accumulation calculations.
Key functionalities include:
1.9.8