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New function to copute Tsunami Travel Times. Shelter it against recompilations. #1947

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Merged
joa-quim merged 1 commit into from
Mar 3, 2026
Merged

New function to copute Tsunami Travel Times. Shelter it against recompilations. #1947

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10 changes: 7 additions & 3 deletions src/extras/wave_travel_time.jl
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Original file line number Diff line number Diff line change
@@ -1,12 +1,12 @@
# This code was translated by Claude from the original in C-MEX that lieves in Mirone.

"""
wave_travel_time(G::GMTgrid, source::Vector{<:Real}; geo::Bool=true, fill_voids::Bool=true)
wave_travel_time(G::GMTgrid{Float32, 2}, source::Union{Tuple{<:Real, <:Real}, VecOrMat{<:Real}}; geo::Bool=true, fill_voids::Bool=true)

Compute the tsunami travel time given a bathymetry grid and a source location.

- `G`: GMTgrid with bathymetry (z positive up, in meters). The grid should not contain NaNs.
- `source`: `[lon, lat]` of the tsunami source.
- `source`: `[lon, lat]` or `(lon,lat)`of the tsunami source.
- `geo`: `true` if coordinates are geographic (degrees), `false` if Cartesian.
- `fill_voids`: fill voids left by the first wavefront expansion (default `true`).

Expand All @@ -19,7 +19,11 @@ Gttt = wave_travel_time(G, [-11.0, 35.9])
viz(Gttt, contour=true, colorbar=true, coast=true, proj=:guess)
```
"""
function wave_travel_time(G::GMTgrid, source::Vector{<:Real}; geo::Bool=true, fill_voids::Bool=true)
function wave_travel_time(G::GMTgrid{Float32, 2}, source::Union{Tuple{<:Real, <:Real}, VecOrMat{<:Real}}; geo::Bool=true, fill_voids::Bool=true)
src = (Float64(source[1]), Float64(source[2]))
wave_travel_time(G, src, geo==1, fill_voids==1)
end
function wave_travel_time(G, source::Tuple{Float64, Float64}, geo::Bool, fill_voids::Bool)
x_min, x_max, y_min, y_max = G.range[1], G.range[2], G.range[3], G.range[4]
x_inc, y_inc = G.inc[1], G.inc[2]
# Compute nx, ny from coordinate vectors (robust for all layouts, including transposed TRB)
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