forked from 1b-agent/opencadstudio-upstream
Hakan SevenandClaude Opus 4.8
66f7d24bc9
Add a transparency_enable uniform read by the wire shader: when the new TPY pill is off, every line is forced opaque; when on, baked entity transparency shows through. Toggling is a uniform write, no retessellate (same mechanism as the lineweight-display toggle). Pill is toggleable from the status-bar customization menu. Co-Authored-By: Claude Opus 4.8 <[email protected]>
805 lines
33 KiB
Rust
805 lines
33 KiB
Rust
// GPU rendering primitives, shader::Program / shader::Primitive impls,
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// and entity render-style helpers for the Scene.
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use acadrust::tables::LineType;
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use acadrust::types::{Color as AcadColor, LineWeight};
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use acadrust::{CadDocument, EntityType, Handle};
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use glam::Mat4;
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use iced::mouse;
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use iced::widget::shader::{self, Viewport};
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use iced::{Rectangle, Size};
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use std::sync::Arc;
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use super::pipeline::viewcube::{hover_id, VIEWCUBE_PX};
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use super::pipeline::MultiPipeline;
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use super::tess_util;
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use super::{HatchModel, ImageModel, MeshLodSet, Scene, Uniforms, ViewportInstance, WireModel};
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// ── Camera hover state (shader::Program::State) ───────────────────────────
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#[derive(Clone, Default)]
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pub struct CameraState {
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pub hover_region: Option<usize>,
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}
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// ── GPU primitive ─────────────────────────────────────────────────────────
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/// Everything needed to render one viewport: its geometry, camera, render
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/// mode, and the screen rectangle it occupies. The unified renderer carries
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/// a `Vec<ViewportData>` (one per tiled / floating viewport); each gets its
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/// own inner `Pipeline` instance drawn into its own rectangle.
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#[derive(Debug)]
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pub struct ViewportData {
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pub(super) wires: Arc<Vec<WireModel>>,
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/// 3DFACE entity wires — separated so they are uploaded to the dedicated
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/// face3d pipeline (fill + batched edges) instead of N individual WireGpu.
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pub(super) face3d_wires: Arc<Vec<WireModel>>,
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/// Per-entity normalized draw-order depth (handle.value() → (0,1)), used
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/// by the wire / face3d pipelines as a clip-z bias. WireModels carry no
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/// depth field (84 construction sites); the bias is looked up by handle
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/// at GPU-upload time from this map instead.
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pub(super) draw_depths: Arc<std::collections::HashMap<u64, f32>>,
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pub(super) hatches: Arc<Vec<HatchModel>>,
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/// Wipeout fills — rendered in a separate pass AFTER wires.
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pub(super) wipeout_hatches: Arc<Vec<HatchModel>>,
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pub(super) images: Arc<Vec<ImageModel>>,
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pub(super) meshes: Arc<Vec<MeshLodSet>>,
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pub(super) uniforms: Uniforms,
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/// Camera rotation matrix derived from the quaternion.
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/// Used by the ViewCube pipeline — no gimbal lock.
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pub(super) cam_rotation: Mat4,
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pub(super) hover_region: Option<usize>,
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pub(super) show_viewcube: bool,
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/// Header.fill_mode (FILLMODE): when false, hatch / wipeout / face3d-fill
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/// uploads short-circuit so the renderer draws only wireframe.
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pub(super) fill_mode: bool,
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/// Per-view "Wireframe vs Solid" toggle. When `true`, 3D face fills
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/// are dropped on the upload path so 3D faces draw as edges only.
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/// Hatch / wipeout uploads are deliberately *not* gated by this flag —
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/// the user toggle should only affect 3D solids, not 2D fills.
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pub(super) view_wireframe: bool,
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/// Whether the active render mode wants 3D mesh fills uploaded. Off
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/// in `Wireframe2D` / `Wireframe3D`; on for every shaded variant. Set
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/// at the same point `view_wireframe` is computed so the two stay in
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/// lock-step for the gating logic in `prepare()`.
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pub(super) mesh_fill: bool,
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/// Whether the active render mode wants 3D mesh / face edges
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/// rendered on top of fills. Most shaded modes turn this off; the
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/// `*WithEdges` variants and the pure wireframes leave it on.
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pub(super) show_3d_edges: bool,
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/// HiddenLine routes 3D fills through a depth-only prepass so edges
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/// occluded by closer geometry are culled by the LessEqual depth
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/// test on the wire passes that follow.
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pub(super) hidden_line: bool,
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pub(super) geometry_epoch: u64,
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/// Camera generation captured when this Primitive was assembled. Paired
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/// with `geometry_epoch` so the wire buffers re-upload when the view
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/// changes (frustum culling produces a different wire list).
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pub(super) camera_generation: u64,
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/// Screen rectangle this viewport fills, **normalized** to the widget
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/// bounds (each component in 0..1). A single full-widget view is
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/// `(0, 0, 1, 1)`; tiled / floating viewports are sub-rectangles.
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/// Normalized form lets `render()` derive the physical sub-clip from
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/// the surface clip without needing the scale factor.
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pub(super) screen_rect: Rectangle,
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}
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#[derive(Debug)]
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pub struct Primitive {
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/// One entry per viewport drawn this frame (≥1).
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pub(super) viewports: Vec<ViewportData>,
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/// Background color used to clear each viewport's MSAA buffer.
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pub(super) bg_color: [f32; 4],
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}
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/// Flags the render pipeline consumes, derived from
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/// [`acadrust::entities::ViewportRenderMode`]. Each shaded variant fills
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/// 3D faces and meshes; the pure wireframes drop the fill and keep only
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/// edges. `*WithEdges` variants render both. HiddenLine uses a depth
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/// prepass: face/mesh fills are uploaded but routed through depth-only
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/// pipelines so hidden edges drop out. `FlatShaded` vs `GouraudShaded`
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/// differ in shader uniform only and produce identical fill flags here.
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#[derive(Clone, Copy, Debug)]
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pub struct RenderModeFlags {
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pub face3d_fill: bool,
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pub mesh_fill: bool,
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pub show_3d_edges: bool,
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pub hidden_line: bool,
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/// `true` for FlatShaded / FlatShadedWithEdges. The mesh shader
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/// reads `Uniforms.flat_shade` and replaces the smooth per-vertex
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/// normal with a per-triangle face normal so each triangle reads
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/// as a single tone.
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pub flat_shade: bool,
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}
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pub fn render_mode_flags(
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mode: acadrust::entities::ViewportRenderMode,
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) -> RenderModeFlags {
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use acadrust::entities::ViewportRenderMode as M;
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match mode {
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M::Wireframe2D | M::Wireframe3D => RenderModeFlags {
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face3d_fill: false,
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mesh_fill: false,
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show_3d_edges: true,
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hidden_line: false,
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flat_shade: false,
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},
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M::HiddenLine => RenderModeFlags {
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face3d_fill: true,
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mesh_fill: true,
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show_3d_edges: true,
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hidden_line: true,
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flat_shade: false,
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},
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M::FlatShaded => RenderModeFlags {
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face3d_fill: true,
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mesh_fill: true,
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show_3d_edges: false,
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hidden_line: false,
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flat_shade: true,
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},
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M::GouraudShaded => RenderModeFlags {
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face3d_fill: true,
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mesh_fill: true,
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show_3d_edges: false,
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hidden_line: false,
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flat_shade: false,
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},
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M::FlatShadedWithEdges => RenderModeFlags {
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face3d_fill: true,
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mesh_fill: true,
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show_3d_edges: true,
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hidden_line: false,
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flat_shade: true,
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},
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M::GouraudShadedWithEdges => RenderModeFlags {
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face3d_fill: true,
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mesh_fill: true,
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show_3d_edges: true,
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hidden_line: false,
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flat_shade: false,
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},
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}
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}
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// ── shader::Primitive impl ────────────────────────────────────────────────
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impl shader::Primitive for Primitive {
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type Pipeline = MultiPipeline;
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fn prepare(
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&self,
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pipeline: &mut MultiPipeline,
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device: &iced::wgpu::Device,
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queue: &iced::wgpu::Queue,
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bounds: &Rectangle,
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viewport: &Viewport,
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) {
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let phys = viewport.physical_size();
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let full_size = Size::new(phys.width, phys.height);
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let scale = viewport.scale_factor() as f32;
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pipeline.ensure_len(device, queue, self.viewports.len());
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for (i, vp) in self.viewports.iter().enumerate() {
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let inner = &mut pipeline.inners[i];
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// The MSAA / depth / resolve textures are always sized to the
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// FULL viewport rectangle (not the on-canvas-visible portion)
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// so the camera matrices render at consistent aspect / scale.
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// The blit step picks the visible sub-rectangle out via the
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// shader's UV crop uniform, which lets partially off-canvas
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// viewports composite to their visible surface area without
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// drift.
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let clip_size = Size::new(
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(vp.screen_rect.width * bounds.width * scale).ceil().max(1.0) as u32,
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(vp.screen_rect.height * bounds.height * scale).ceil().max(1.0) as u32,
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);
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inner.ensure_depth_texture(device, clip_size);
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inner.viewcube.ensure_depth_texture(device, full_size);
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// Compute the UV crop for this viewport. `screen_rect` is in
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// normalized canvas units (0..1) but may extend negative or
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// beyond 1 when the viewport hangs off the canvas. The on-
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// canvas portion in viewport-local UV is straightforward to
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// derive from how much sticks out on each side.
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let sr = vp.screen_rect;
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let (uo_x, us_x) = uv_crop_axis(sr.x, sr.width);
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let (uo_y, us_y) = uv_crop_axis(sr.y, sr.height);
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inner.upload_blit_uv(queue, [uo_x, uo_y], [us_x, us_y]);
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inner.upload_uniforms(queue, &vp.uniforms);
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let cur_key = (vp.geometry_epoch, vp.camera_generation);
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let fill_mode = vp.fill_mode;
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// 3D face fill requires *both* the doc-level FILLMODE *and* the
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// per-view Solid toggle. Hatches / wipeouts deliberately ignore
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// the view toggle so 2D fills stay on even when the user picks
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// the Wireframe overlay style.
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let face3d_fill_active = fill_mode && !vp.view_wireframe;
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if cur_key != inner.cached_epoch {
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// Static buffers (hatches/images/meshes) only need refresh on
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// a real geometry change, not on every camera tick.
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if vp.geometry_epoch != inner.cached_epoch.0 {
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if fill_mode {
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inner.upload_hatches(device, &vp.hatches[..]);
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inner.upload_wipeouts(device, &vp.wipeout_hatches[..]);
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} else {
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inner.upload_hatches(device, &[]);
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inner.upload_wipeouts(device, &[]);
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}
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inner.upload_images(device, queue, &vp.images[..]);
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inner.upload_meshes(device, &vp.meshes[..]);
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}
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// Wires re-upload on every camera change because the visible
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// subset shifts under frustum culling.
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inner.upload_wires(device, &vp.wires[..], &vp.draw_depths);
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inner.upload_face3d(
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device,
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&vp.face3d_wires[..],
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&vp.wires[..],
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!face3d_fill_active,
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&vp.draw_depths,
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);
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inner.cached_epoch = cur_key;
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}
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let vproj = vp.uniforms.view_proj;
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inner.compute_wire_scissors(vproj, clip_size.width, clip_size.height);
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inner.compute_wipeout_scissors(vproj, clip_size.width, clip_size.height);
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inner.compute_image_scissors(vproj, clip_size.width, clip_size.height);
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inner.compute_hatch_lod(queue, vproj, clip_size.width, clip_size.height);
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inner.compute_wipeout_lod(vproj, clip_size.width, clip_size.height);
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inner.compute_mesh_lod(vproj, clip_size.width, clip_size.height);
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if vp.show_viewcube {
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inner.viewcube.upload(
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queue,
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vp.cam_rotation,
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(vp.screen_rect.width * bounds.width) as u32,
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(vp.screen_rect.height * bounds.height) as u32,
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vp.hover_region,
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);
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}
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}
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}
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fn render(
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&self,
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pipeline: &MultiPipeline,
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encoder: &mut iced::wgpu::CommandEncoder,
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target: &iced::wgpu::TextureView,
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clip: &Rectangle<u32>,
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) {
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let cw = clip.width as f32;
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let ch = clip.height as f32;
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let clip_right = clip.x + clip.width;
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let clip_bottom = clip.y + clip.height;
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for (i, vp) in self.viewports.iter().enumerate() {
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let Some(inner) = pipeline.inners.get(i) else {
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break;
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};
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// Where the viewport would land on the surface in absolute
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// pixels (i32 because either edge may stick off the canvas).
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let vp_full_x = clip.x as i32 + (vp.screen_rect.x * cw) as i32;
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let vp_full_y = clip.y as i32 + (vp.screen_rect.y * ch) as i32;
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let vp_full_w = (vp.screen_rect.width * cw).max(1.0) as i32;
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let vp_full_h = (vp.screen_rect.height * ch).max(1.0) as i32;
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// Intersect with the surface clip — that's the slice we blit.
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let dest_x = vp_full_x.max(clip.x as i32);
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let dest_y = vp_full_y.max(clip.y as i32);
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let dest_right = (vp_full_x + vp_full_w).min(clip_right as i32);
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let dest_bottom = (vp_full_y + vp_full_h).min(clip_bottom as i32);
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if dest_right <= dest_x || dest_bottom <= dest_y {
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continue;
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}
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let surface_dest = Rectangle {
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x: dest_x as u32,
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y: dest_y as u32,
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width: (dest_right - dest_x) as u32,
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height: (dest_bottom - dest_y) as u32,
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};
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let vp_size = Size::new(vp_full_w.max(1) as u32, vp_full_h.max(1) as u32);
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// `mesh_fill` is false for Wireframe 2D / Wireframe 3D — flip
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// the draw path so meshes use the wireframe pipeline + the
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// pre-built triangle-edge index buffer.
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let mesh_wireframe = !vp.mesh_fill;
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inner.render(
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encoder,
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target,
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vp_size,
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surface_dest,
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self.bg_color,
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mesh_wireframe,
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vp.hidden_line,
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vp.show_3d_edges,
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);
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// The ViewCube renders directly to the surface at the full
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// viewport rect. Skip it when the viewport's top-right corner
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// (where the cube sits) is off-canvas — wgpu's `set_viewport`
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// rejects negative origins, and a clamped cube would scale
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// distortedly. The active viewport is normally fully visible.
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if vp.show_viewcube
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&& vp_full_x >= clip.x as i32
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&& vp_full_y >= clip.y as i32
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&& vp_full_x + vp_full_w <= clip_right as i32
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&& vp_full_y + vp_full_h <= clip_bottom as i32
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{
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let vp_clip = Rectangle {
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x: vp_full_x as u32,
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y: vp_full_y as u32,
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width: vp_full_w as u32,
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height: vp_full_h as u32,
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};
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inner.viewcube.render(encoder, target, vp_clip);
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}
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}
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}
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}
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/// On-canvas-visible UV crop on one axis. `pos` and `size` are in the
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/// shader widget's normalized 0..1 coords. Returns `(uv_offset, uv_scale)`
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/// applied as `actual_uv = quad_uv * uv_scale + uv_offset` in the blit
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/// shader — identity `(0.0, 1.0)` for fully on-canvas viewports.
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fn uv_crop_axis(pos: f32, size: f32) -> (f32, f32) {
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if size <= 0.0 {
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return (0.0, 1.0);
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}
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let left_off = (-pos).max(0.0);
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let right_off = (pos + size - 1.0).max(0.0);
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let visible = (size - left_off - right_off).max(0.0);
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(left_off / size, visible / size)
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}
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/// Apply a clip-space crop to `view_proj` so the sub-rect of the original
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/// view defined by UV offset `(uo, vo)` + scale `(us, vs)` is remapped to
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/// NDC `[-1, 1]^2`. Identity transform when the sub-rect is the whole
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/// view (`uo=vo=0`, `us=vs=1`). Used by viewports that hang off the
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/// canvas — the camera frustum stays at full-vp aspect, but only the
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/// visible portion lands in the MSAA target.
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fn crop_view_proj(view_proj: glam::Mat4, uo: f32, vo: f32, us: f32, vs: f32) -> glam::Mat4 {
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// Build the matrix that maps the visible clip-space sub-rect
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// x ∈ [2uo - 1, 2(uo+us) - 1]
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// y ∈ [1 - 2(vo+vs), 1 - 2vo]
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// back to NDC [-1, 1]^2. (Texture v is top-down → camera y flips.)
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let us = us.max(1e-6);
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let vs = vs.max(1e-6);
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let sx = 1.0 / us;
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let sy = 1.0 / vs;
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let tx = (1.0 - 2.0 * uo - us) / us;
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let ty = -(1.0 - 2.0 * vo - vs) / vs;
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let crop = glam::Mat4::from_cols_array(&[
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sx, 0.0, 0.0, 0.0, // col 0
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0.0, sy, 0.0, 0.0, // col 1
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0.0, 0.0, 1.0, 0.0, // col 2
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tx, ty, 0.0, 1.0, // col 3
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]);
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crop * view_proj
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}
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// ── Render-style helpers (impl Scene) ────────────────────────────────────
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impl Scene {
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/// Returns (entity_color, pattern_length, pattern, line_weight_px, aci).
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pub(super) fn render_style(&self, e: &EntityType) -> ([f32; 4], f32, [f32; 8], f32, u8) {
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let (color, pl, pat, lw, aci) = render_style_for(&self.document, e);
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let bg = if self.current_layout == "Model" {
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self.bg_color
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} else {
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self.paper_bg_color
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};
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(adapt_to_bg(color, bg), pl, pat, lw, aci)
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}
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}
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// ── Document-only render-style helpers (no &self, safe to call from parallel contexts) ──
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/// Resolves the effective linetype name for an entity, falling back to the
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/// layer's linetype when the entity's own linetype is "ByLayer".
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pub(super) fn linetype_name_for<'a>(document: &'a CadDocument, e: &'a EntityType) -> &'a str {
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let elt = &e.common().linetype;
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if elt.is_empty() || elt.eq_ignore_ascii_case("bylayer") {
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document
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.layers
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.get(&e.common().layer)
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.map(|l| l.line_type.as_str())
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.unwrap_or("Continuous")
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} else {
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elt.as_str()
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}
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}
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/// Returns `(entity_color, pattern_length, pattern, line_weight_px, aci)` for
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/// an entity, resolving ByLayer color and linetype from the document.
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pub(super) fn render_style_for(
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document: &CadDocument,
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e: &EntityType,
|
||
) -> ([f32; 4], f32, [f32; 8], f32, u8) {
|
||
let layer_name = &e.common().layer;
|
||
let (entity_color, aci) = {
|
||
let ec = &e.common().color;
|
||
let resolved = if *ec == AcadColor::ByLayer {
|
||
document
|
||
.layers
|
||
.get(layer_name)
|
||
.map(|l| &l.color)
|
||
.unwrap_or(&AcadColor::WHITE)
|
||
} else {
|
||
ec
|
||
};
|
||
let aci = match resolved {
|
||
AcadColor::Index(i) => *i,
|
||
_ => 0,
|
||
};
|
||
let [r, g, b, _] = tess_util::aci_to_rgba(resolved);
|
||
let alpha = 1.0 - e.common().transparency.as_percent() as f32;
|
||
([r, g, b, alpha], aci)
|
||
};
|
||
|
||
let lt_name = linetype_name_for(document, e);
|
||
// Effective scale = global LTSCALE × per-entity scale (both default to 1.0).
|
||
let lt_scale = document.header.linetype_scale as f32 * e.common().linetype_scale as f32;
|
||
let (pattern_length, pattern) = resolve_pattern(&document.line_types, lt_name, lt_scale);
|
||
|
||
let line_weight_px = {
|
||
// LWDISPLAY is no longer evaluated here — the toggle is now applied in
|
||
// the wire shader via `Uniforms.lwdisplay_enable`, so we always bake the
|
||
// entity's resolved (layer-inherited) weight. Toggling lineweight
|
||
// visibility costs only a uniform write, not a retessellate.
|
||
let ew = &e.common().line_weight;
|
||
let resolved = match ew {
|
||
LineWeight::ByLayer | LineWeight::ByBlock | LineWeight::Default => document
|
||
.layers
|
||
.get(layer_name)
|
||
.map(|l| &l.line_weight)
|
||
.unwrap_or(&LineWeight::Default),
|
||
_ => ew,
|
||
};
|
||
const MM_TO_PX: f32 = 96.0 / 25.4;
|
||
resolved
|
||
.millimeters()
|
||
.map(|mm| (mm as f32 * MM_TO_PX).max(1.0))
|
||
.unwrap_or(1.0)
|
||
};
|
||
|
||
(entity_color, pattern_length, pattern, line_weight_px, aci)
|
||
}
|
||
|
||
/// Like `render_style_for` but resolves ByBlock properties by inheriting from
|
||
/// the INSERT entity's already-resolved style. Call this for exploded block
|
||
/// sub-entities so that ByBlock color/linetype/lineweight propagate correctly.
|
||
pub(crate) fn render_style_for_block_sub(
|
||
document: &CadDocument,
|
||
e: &EntityType,
|
||
insert_color: [f32; 4],
|
||
insert_pat_len: f32,
|
||
insert_pat: [f32; 8],
|
||
insert_lw_px: f32,
|
||
) -> ([f32; 4], f32, [f32; 8], f32, u8) {
|
||
let (color, pat_len, pat, lw_px, aci) = render_style_for(document, e);
|
||
let common = e.common();
|
||
|
||
let final_color = if common.color == AcadColor::ByBlock {
|
||
insert_color
|
||
} else {
|
||
color
|
||
};
|
||
|
||
let (final_pat_len, final_pat) = if common.linetype.eq_ignore_ascii_case("byblock") {
|
||
(insert_pat_len, insert_pat)
|
||
} else {
|
||
(pat_len, pat)
|
||
};
|
||
|
||
let final_lw = if matches!(common.line_weight, LineWeight::ByBlock) {
|
||
insert_lw_px
|
||
} else {
|
||
lw_px
|
||
};
|
||
|
||
(final_color, final_pat_len, final_pat, final_lw, aci)
|
||
}
|
||
|
||
/// Adapt white→black or black→white based on background luminance.
|
||
/// White entities on light backgrounds become black, black entities on dark
|
||
/// backgrounds become white. All other colors pass through unchanged.
|
||
pub(crate) fn adapt_to_bg(color: [f32; 4], bg: [f32; 4]) -> [f32; 4] {
|
||
let lum = 0.299 * bg[0] + 0.587 * bg[1] + 0.114 * bg[2];
|
||
let is_white = color[0] > 0.95 && color[1] > 0.95 && color[2] > 0.95;
|
||
let is_black = color[0] < 0.05 && color[1] < 0.05 && color[2] < 0.05;
|
||
if is_white && lum > 0.5 {
|
||
[0.0, 0.0, 0.0, color[3]]
|
||
} else if is_black && lum <= 0.5 {
|
||
[1.0, 1.0, 1.0, color[3]]
|
||
} else {
|
||
color
|
||
}
|
||
}
|
||
|
||
// ── Primitive builder helpers (called by ViewportPane's shader::Program impl) ──
|
||
|
||
impl Scene {
|
||
/// Build the unified multi-viewport `Primitive` for the current layout.
|
||
/// Model layout → one full-window viewport (more once tiled); paper
|
||
/// layout → one viewport per floating content viewport. Each entry is
|
||
/// rendered into its own screen rectangle by its own inner pipeline.
|
||
pub(super) fn build_viewports(
|
||
&self,
|
||
bounds: Rectangle,
|
||
model_render_mode: acadrust::entities::ViewportRenderMode,
|
||
_hover_region: Option<usize>,
|
||
) -> Primitive {
|
||
// Hover comes from the scene cell driven by the app-level
|
||
// `CursorMoved` handler — the cube overlay sits above the shader
|
||
// and would otherwise mask the move event from `Program::update`.
|
||
let hover_region = self.viewcube_hover.get();
|
||
self.selection.borrow_mut().vp_size = (bounds.width, bounds.height);
|
||
if bounds.height > 0.0 {
|
||
self.set_render_aspect(bounds.width / bounds.height);
|
||
self.set_render_pixel_scale(bounds.width, bounds.height);
|
||
}
|
||
let canvas = (bounds.width.max(1.0), bounds.height.max(1.0));
|
||
let instances = self.active_viewports(canvas.0, canvas.1, model_render_mode);
|
||
// Transparent clear — outside drawn geometry the resolve texture
|
||
// stays at alpha=0, so the alpha-blended blit reveals the container
|
||
// background (model bg, or the desk colour in a paper layout).
|
||
let bg_color = [0.0, 0.0, 0.0, 0.0];
|
||
let viewports: Vec<ViewportData> = instances
|
||
.iter()
|
||
.filter_map(|inst| self.viewport_data_for(inst, canvas, hover_region))
|
||
.collect();
|
||
// Empty viewports → blit nothing; the container background (model bg
|
||
// or the paper desk colour) stays visible.
|
||
Primitive { viewports, bg_color }
|
||
}
|
||
|
||
/// Build one `ViewportData` from a `ViewportInstance`: gathers the
|
||
/// viewport's geometry (full model for the Model view / `Handle::NULL`,
|
||
/// or the layer-frozen subset for a paper viewport), its camera
|
||
/// uniforms, and the normalized screen rectangle.
|
||
fn viewport_data_for(
|
||
&self,
|
||
inst: &ViewportInstance,
|
||
canvas: (f32, f32),
|
||
hover_region: Option<usize>,
|
||
) -> Option<ViewportData> {
|
||
let flags = render_mode_flags(inst.render_mode);
|
||
let view_wireframe = !flags.face3d_fill;
|
||
|
||
// Clip the viewport rect to the canvas; size the per-viewport MSAA
|
||
// / depth / resolve textures to that visible portion. Sizing them
|
||
// to the full vp rect would blow past wgpu's per-dimension texture
|
||
// limit (8192 on common GPUs) once paper-space zoom grows the rect
|
||
// far enough off the canvas.
|
||
let full = inst.screen_rect;
|
||
if full.width <= 0.0 || full.height <= 0.0 {
|
||
return None;
|
||
}
|
||
let visible_x = full.x.max(0.0);
|
||
let visible_y = full.y.max(0.0);
|
||
let visible_x_end = (full.x + full.width).min(canvas.0);
|
||
let visible_y_end = (full.y + full.height).min(canvas.1);
|
||
let visible_w = (visible_x_end - visible_x).max(0.0);
|
||
let visible_h = (visible_y_end - visible_y).max(0.0);
|
||
if visible_w < 1.0 || visible_h < 1.0 {
|
||
return None;
|
||
}
|
||
let uo = ((visible_x - full.x) / full.width).clamp(0.0, 1.0);
|
||
let vo = ((visible_y - full.y) / full.height).clamp(0.0, 1.0);
|
||
let us = (visible_w / full.width).clamp(0.0, 1.0);
|
||
let vs = (visible_h / full.height).clamp(0.0, 1.0);
|
||
|
||
// Model tiles each get their own tessellation cache keyed off the
|
||
// tile's camera — culling/LOD depend on per-tile zoom, not the
|
||
// active tile's. Paper-space content viewports already had a
|
||
// per-viewport cache.
|
||
let base_arc = if let Some(tile_idx) = inst.tile_idx {
|
||
let aspect = if full.height > 0.0 {
|
||
full.width / full.height
|
||
} else {
|
||
1.0
|
||
};
|
||
self.model_tile_wires_arc(tile_idx, &inst.camera, aspect, full.height)
|
||
} else if inst.paper_sheet {
|
||
// The sheet renders the paper block's own entities + viewport
|
||
// borders — NOT the projected viewport content (the GPU content
|
||
// viewports draw that themselves).
|
||
self.paper_sheet_wires_arc()
|
||
} else if inst.handle == acadrust::Handle::NULL {
|
||
self.entity_wires_arc()
|
||
} else {
|
||
self.model_wires_for_viewport_arc(inst.handle, full.height)
|
||
};
|
||
let (face3d_wires, other_wires) = split_face3d_wires(&base_arc, &self.document);
|
||
let all_wires = if self.interim_wire.is_none() && self.preview_wires.is_empty() {
|
||
Arc::new(other_wires)
|
||
} else {
|
||
let mut v = other_wires;
|
||
if let Some(iw) = &self.interim_wire {
|
||
v.push(iw.clone());
|
||
}
|
||
v.extend(self.preview_wires.iter().cloned());
|
||
Arc::new(v)
|
||
};
|
||
|
||
// Build the camera at the *full* viewport's aspect so the ortho
|
||
// frustum matches what the viewport entity stores, then post-
|
||
// multiply by a clip-space "zoom into the visible sub-rect" that
|
||
// maps the visible portion to NDC [-1, 1]. Geometry passes
|
||
// rasterize into a visible-sized MSAA, so `viewport_size` (used
|
||
// by the wire shader to extrude line thickness in screen pixels)
|
||
// must be the visible size — but `world_per_pixel` is invariant
|
||
// under cropping (full_h cancels with vs) so the value computed
|
||
// from the full bounds is the one we want.
|
||
let full_bounds = Rectangle {
|
||
x: 0.0,
|
||
y: 0.0,
|
||
width: full.width.max(1.0),
|
||
height: full.height.max(1.0),
|
||
};
|
||
let mut uniforms =
|
||
Uniforms::new(&inst.camera, full_bounds, self.document.header.lineweight_display);
|
||
uniforms.view_proj = crop_view_proj(uniforms.view_proj, uo, vo, us, vs);
|
||
uniforms.viewport_size = [visible_w, visible_h];
|
||
uniforms.flat_shade = if flags.flat_shade { 1.0 } else { 0.0 };
|
||
uniforms.transparency_enable = if self.transparency_display { 1.0 } else { 0.0 };
|
||
|
||
// `screen_rect` carries the *visible* sub-rectangle in normalized
|
||
// canvas coords — that's what `Pipeline::prepare` uses to size
|
||
// the per-viewport textures and what `Primitive::render` uses to
|
||
// pick the surface destination. The UV crop uniform reads as
|
||
// identity here, since the texture already covers exactly the
|
||
// visible portion.
|
||
let screen_rect = Rectangle {
|
||
x: visible_x / canvas.0,
|
||
y: visible_y / canvas.1,
|
||
width: visible_w / canvas.0,
|
||
height: visible_h / canvas.1,
|
||
};
|
||
|
||
// The paper sheet instance renders only the paper layout block's own
|
||
// fills (plus a synthetic white fill for the printable area) — NOT the
|
||
// model-block hatches. Those belong inside the floating content
|
||
// viewports; rendering them on the full-canvas sheet would let them
|
||
// bleed past the viewport borders whenever model coords overlap the
|
||
// paper area. Content viewports keep the full set (the model camera +
|
||
// per-viewport scissor place / clip them correctly).
|
||
let (hatches, wipeout_hatches) = if inst.paper_sheet {
|
||
let mut v: Vec<HatchModel> = Vec::new();
|
||
if let Some(sheet) = self.paper_sheet_fill() {
|
||
v.push(sheet);
|
||
}
|
||
v.extend(self.paper_canvas_hatches().iter().cloned());
|
||
(Arc::new(v), self.paper_canvas_wipeouts())
|
||
} else {
|
||
(self.hatch_models_arc(), self.wipeout_models_arc())
|
||
};
|
||
let images = if inst.paper_sheet {
|
||
self.paper_sheet_images()
|
||
} else {
|
||
self.images_arc()
|
||
};
|
||
|
||
Some(ViewportData {
|
||
wires: all_wires,
|
||
face3d_wires: Arc::new(face3d_wires),
|
||
draw_depths: self.draw_depth_map(),
|
||
hatches,
|
||
wipeout_hatches,
|
||
images,
|
||
meshes: self.meshes_arc(),
|
||
uniforms,
|
||
cam_rotation: inst.camera.view_rotation_mat(),
|
||
// Only the active viewport gets the hovered-region highlight.
|
||
hover_region: if inst.active { hover_region } else { None },
|
||
show_viewcube: inst.active,
|
||
fill_mode: self.document.header.fill_mode,
|
||
view_wireframe,
|
||
mesh_fill: flags.mesh_fill,
|
||
show_3d_edges: flags.show_3d_edges,
|
||
hidden_line: flags.hidden_line,
|
||
geometry_epoch: self.geometry_epoch,
|
||
camera_generation: self.camera_generation,
|
||
screen_rect,
|
||
})
|
||
}
|
||
|
||
/// Update viewcube hover state from cursor position within `bounds`.
|
||
///
|
||
/// The cube draws in the top-right of the *active model tile* (which fills
|
||
/// the canvas when there is a single tile), so the hover hit-test maps the
|
||
/// cursor into that tile's local space and uses the tile's dimensions.
|
||
pub(super) fn update_viewcube_state(
|
||
&self,
|
||
state: &mut CameraState,
|
||
bounds: Rectangle,
|
||
cursor: mouse::Cursor,
|
||
) {
|
||
let pos = cursor.position_in(bounds);
|
||
let cam_rotation = self.camera.borrow().view_rotation_mat();
|
||
if let Some(p) = pos {
|
||
let tile = self.active_model_tile_bounds(bounds.width, bounds.height);
|
||
state.hover_region = hover_id(
|
||
p.x - tile.x,
|
||
p.y - tile.y,
|
||
tile.width,
|
||
tile.height,
|
||
cam_rotation,
|
||
VIEWCUBE_PX,
|
||
);
|
||
} else {
|
||
state.hover_region = None;
|
||
}
|
||
}
|
||
|
||
pub(super) fn viewcube_mouse_interaction(&self, state: &CameraState) -> mouse::Interaction {
|
||
if state.hover_region.is_some() {
|
||
mouse::Interaction::Pointer
|
||
} else {
|
||
mouse::Interaction::default()
|
||
}
|
||
}
|
||
}
|
||
|
||
// ── Linetype pattern helper ───────────────────────────────────────────────
|
||
|
||
pub(crate) fn resolve_pattern(
|
||
table: &acadrust::tables::Table<LineType>,
|
||
name: &str,
|
||
scale: f32,
|
||
) -> (f32, [f32; 8]) {
|
||
let solid = (0.0, [0.0f32; 8]);
|
||
if name.eq_ignore_ascii_case("continuous")
|
||
|| name.eq_ignore_ascii_case("bylayer")
|
||
|| name.eq_ignore_ascii_case("byblock")
|
||
|| name.is_empty()
|
||
{
|
||
return solid;
|
||
}
|
||
let lt = match table.get(name) {
|
||
Some(lt) => lt,
|
||
None => return solid,
|
||
};
|
||
if lt.is_continuous() || lt.elements.is_empty() {
|
||
return solid;
|
||
}
|
||
|
||
let mut pat = [0.0f32; 8];
|
||
let mut pat_len = 0.0f32;
|
||
for (i, el) in lt.elements.iter().take(8).enumerate() {
|
||
let raw = el.length as f32 * scale;
|
||
let encoded = if raw == 0.0 {
|
||
0.01 * scale.max(0.01)
|
||
} else {
|
||
raw
|
||
};
|
||
pat[i] = encoded;
|
||
pat_len += encoded.abs();
|
||
}
|
||
if pat_len < 1e-6 {
|
||
return solid;
|
||
}
|
||
(pat_len, pat)
|
||
}
|
||
|
||
/// Partition a wire list into (face3d_wires, other_wires).
|
||
///
|
||
/// Uses a document handle lookup so no changes to WireModel are needed.
|
||
/// O(N) per geometry epoch — acceptable since it runs once per epoch.
|
||
fn split_face3d_wires(
|
||
wires: &[WireModel],
|
||
document: &acadrust::CadDocument,
|
||
) -> (Vec<WireModel>, Vec<WireModel>) {
|
||
let mut face3d = Vec::new();
|
||
let mut others = Vec::new();
|
||
for w in wires {
|
||
let is_face3d = w
|
||
.name
|
||
.parse::<u64>()
|
||
.ok()
|
||
.and_then(|v| document.get_entity(Handle::new(v)))
|
||
.map(|e| matches!(e, EntityType::Face3D(_)))
|
||
.unwrap_or(false);
|
||
if is_face3d {
|
||
face3d.push(w.clone());
|
||
} else {
|
||
others.push(w.clone());
|
||
}
|
||
}
|
||
(face3d, others)
|
||
}
|