forked from 1b-agent/fieldcraft-upstream
Christian Svensson
0d30ddb747
A fluid step's result is a field per cell of a regular grid, not per node, so the contour machinery had nothing to draw it with and the viewport showed nothing after a fluid solve. Add `render::flow`, CPU display data for such fields with no solver dependency (render stays at L1): an axis-aligned slice through the cells as triangles carrying cell-centred values (interpolated between the two layers either side, outer centres moved to the domain faces, cells inside obstacles left out), the field sampled at a surface beside the fluid cells for colouring an obstacle, and streamlines traced through the trilinear velocity field by the midpoint rule, seeded on a lattice upstream of the obstacles. Seeds, steps and the total number of points are capped so hostile counts cost a bounded time. `contour::banded` fans band pieces into scene triangles for the callers. Part of #193.
27 lines
1.2 KiB
Rust
27 lines
1.2 KiB
Rust
//! Display data for FieldCraft, with no GPU dependency: what a finite element model looks like
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//! on screen ([`DisplayMesh`]: the visible faces, element edges, line elements and nodes), an
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//! orbit camera with perspective or orthographic projection, picking ([`pick`]: what a ray through
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//! a pixel hits), flow fields on a grid of cells ([`flow`]: slices, surface values and
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//! streamlines), and a CPU rasterizer for headless snapshots. The desktop viewport draws the
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//! same [`Scene`] on the GPU.
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#![deny(clippy::unwrap_used, clippy::expect_used, clippy::panic, clippy::unimplemented, clippy::todo, clippy::unreachable)]
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#![forbid(unsafe_code)]
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mod camera;
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pub mod contour;
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mod display;
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pub mod flow;
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mod font;
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pub mod glyphs;
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pub mod pick;
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mod raster;
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mod vec;
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pub use camera::{Camera, FIT_MARGIN, FULL_VIEW, Mat4, Orientation, StandardView};
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pub use display::{DisplayEdge, DisplayLine, DisplayMesh, DisplayNode, DisplayTri, SurfaceCurve, SurfaceTri};
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pub use raster::{
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Canvas, LABEL_OFFSET, MAX_DIM, MAX_PIXELS, MAX_PRIMITIVES, RenderError, Rgb, Scene, SceneFill, SceneLabel, SceneLine, ScenePoint, SceneTri,
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draw_labels, fit_size, png, render, render_layers, render_layers_png, render_png, shade,
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};
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pub use vec::{Aabb3, Vec3};
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