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Add an SVG backend, full layer attributes, and close the remaining rendering gaps - #5

Merged

albertwoo merged 130 commits into

slaveOftime:mainfrom

mubeda:mubeda/svg-support

Sep 7, 2026

Commits on Sep 2, 2026

Add sample parity baselines and design docs

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c8f1b4c
Assert parity page counts match baselines

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aeb6074
Update ACadSharp to 3.7.1 and drop net6.0

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4cb9d47
Add drawing surface abstraction and ImageSharp implementation

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2ed6212
Render entities through the drawing surface

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609a98c
Add RenderedPage abstraction and format-aware Render

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e977934
Emit entity boundaries with effective layer to the surface

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71e32a0
Apply plan 1 review fixes

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de84625
Add SvgOptions and the Svg export format

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29240d1
Add SVG number and id formatting helpers

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fc7d42d
Add SvgDrawingSurface with layer groups and straight primitives

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73d6282
Use fixed precision for SVG style values

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19f1ea4
Emit native arcs, bulges and Bezier splines for curve-capable surfaces

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e061312
Guard native curves against non-WCS normals and unbounded sweeps

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38fe93a
Write CAD text as SVG text elements

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0588075
Clip SVG viewport contents with clipPath groups

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a878efe
Render pages to SVG through the exporter

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8040d82
Derive SVG style precision from the stroke unit

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1181c65
Add SVG format and options to the CLI

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b1b1e5e
Add SVG golden files for the samples

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6c3368e
Assert golden SVG page counts match

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f15170b
Apply SVG backend review fixes

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24801d7
Add layer visibility, include list and related configuration

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1a37d40
Apply layer visibility and selection in the render loop

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ea83516
Document the render-time reframing on RenderTo

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436b261
Resolve colour index 7 from the background or ForegroundColor

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8e08ef6
Map entity transparency to opacity

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0c76ed0
Render linetypes as dash patterns with LTSCALE and PSLTSCALE

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05a2978
Fix PSLTSCALE branch and test viewport linetype scaling

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fb22d36

Commits on Sep 3, 2026

Render solid and pattern hatches

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9c54090
Add layer visibility, include list and --list-layers to the CLI

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425d6ef
Align the layer table and validate --layer-visibility strictly

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2e1fec1
Document layer visibility, selection and SVG output

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f9821b9
Apply final review fixes for layer attributes

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fc99ba8
Sanitise SVG text and ids, keep background alpha, run tests on push

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4016f3b
Bring OCS polylines and hatches into world space, cap hatch expansion up front

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ed338ef
Fit filtered pages through a PageFrame instead of rewriting the page

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e5709c3
Resolve ByLayer against the effective layer and ByBlock against the insert

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3d2882e
Draw fit-point-only splines, tighten two tests, record review amendments

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c140a2b
Test the CLI parser, format resolution and layer table

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b8c1585
Add the test-hardening plan

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2d4a492
Add a paper-space viewport fixture with PNG baseline and SVG golden

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d045d53
Add feature goldens covering hatches, ellipses, opacity, inserts and text

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0439299
Test spline sampling and text placement through the dispatcher

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9696fa3
Test the configuration set API, rendered page encoders, formats and units

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b6fe164
Fix final review findings in test-hardening tests

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f58b35f
Add the post-review follow-up plan

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65d32b5
Place raster viewport content against the exact viewport height

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3bb69ab
Correct the viewport parity amendment in the spec

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434990e
Bring OCS solids into world space

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58f5e59
Route CLI output through writers and document the new test classes

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1ad1427
Fill solids in DXF corner order and correct the follow-up docs

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e513f8e
Add the remaining-fixes plan

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e5d939d
Keep the sub-pixel position of raster viewport composites

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42f5e3c
Place single-line TEXT on non-default OCS planes

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d15638d
Test frozen inserts with layer-0 contents and tidy the CLI entry point

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67c50af
Normalise exploded TEXT clones and correct the mirrored-text wording

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b284365
Place block text through the insert transform and normalise hatch clones

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292aa69
Document text foreshortening and test nested-insert text

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c66c2e0
Tidy text placement: drop unused overloads, warn on edge-on text

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a4842a7
Skip malformed entities instead of aborting the export

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b1412b7
Add the text-fidelity plan

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5ab4bb5
Decode Unicode escapes and percent codes in text

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b0521f8
Resolve missing font families along a deterministic fallback chain

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88a44b0
Size, anchor and wrap SVG text like the raster backend

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db2e717
Wrap SVG text at the raster's break opportunities and survive missing fonts

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1ad68f5
Space raster text lines at 5/3 of the text height like AutoCAD

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Wrap SVG text with a greedy fit at whitespace, hyphen and slash breaks

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de6b00d
Keep no-break spaces unbroken when wrapping SVG text

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fd9105c
Describe SVG wrapping parity as line-count parity in the spec

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Add research note on the remaining rendering limitations

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3dcf823
Add the remaining-entities plan

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2937547
Refine the remaining-entities plan after pre-flight review

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5ac7cdc
Draw page entities in the drawing's sort order

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feb479a
Draw 3DFACE edges on both backends

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0c41257
Draw block attributes and skip attribute definition templates

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1ceba7d
Fix round 1: thread ATTMODE through nested inserts, dedupe constant attributes

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db275fe
Fix round 2: gate constant ATTDEFs on ATTMODE, case-insensitive tag dedupe

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bd8e734
Draw leaders with their default arrowhead

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32423dd
Draw multilines and shield block MLINEs from the destructive clone

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e1a6919
Fix round 1: fill closed MLINE rings, heal nested-block MLINEs in place, guard element indices

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989eacd
Mask wipeouts with the background colour

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cadbe95
Size raster text in ems at 72 dpi and fix the leading compensation

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Guard non-finite fills and close the plan 08 review items

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f85567c
Drop the last 96 dpi wording and point the research note at TextMetrics

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771b265
Split the research note's source pointers for TextMetrics and SvgTextLayout

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aee549f
Note the draw-order and Dpi behaviour changes in the README migration list

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0131f28

Commits on Sep 4, 2026

Add the Codex review fixes plan

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Refine plan 09 after pre-flight review

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cd0a9d1
Draw viewports in page order and survive malformed model entities in them

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f605a91
Draw only AddViewport'd viewports as viewports; review fixes

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99c06ae
Frame pages from the geometry the renderer draws and skip block references without a block

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e846c60
Cull viewport contents by the renderer's own bounds, not raw GetBoundingBox

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771b2aa
Cull viewport contents by XY bounds overlap, not corner-based IsIn

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555caab
Add the design note and spec for the remaining rendering limitations

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abad75e
Place block solids and leaders from their originals through the insert transform

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c8207b3
Fix round 1: carry LEADER vertex Z into the arrowhead anchor

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2e6d466
Stretch block text along the reading axis under non-uniform insert scales

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10259a9
Fix round 1 for task 4: style-precision stretch factor, guard alignment, docs

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efca4a9
Fix MLINE fallback offsets and inherited element linetypes, cache block MLINE/LEADER scans

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0902b36
Fix round 1 for Task 5: real LEADER staleness test, cache-truncation write, doc fixes

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Preserve text whitespace in SVG, refresh stale docs, reject extra CLI arguments, drop dead overloads

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0546c91
Fix round 1 for Task 6: scope xml:space to avoid drawing pretty-print indentation

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776611f
Pin DRAWORDER tables, render the new entities through both backends, tighten two tests

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157becd
Polish round for Task 7: docs, dedupe WithHandle, tighten assertions

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84e29d2
Refresh the remaining-limitations design against the current code

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1557691
Fix final-review findings from plan 09 (C1, I1, I2, M1-M4)

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42151d3
Add the implementation plan for the remaining rendering limitations

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77e6b65
Amend plan 10 Task 1: build test placements from a real block reference

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Amend plan 10 after review: cycle detection, arrow placement, scope rulings

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Add the insert placement helpers and route the existing maps through them

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Lay out multi-line attributes from their embedded MText

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ecf1435
Cover the orthogonality branch of TryGetPlanarSimilarity with a sheared placement

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669d7c3
Cover the placed constant multi-line ATTDEF and label the observable-entity guard

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13cc66b
Draw hatches from the original entity in its own OCS through the insert transform

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Polish task 3: pattern-hatch mirror test, doc gaps from review

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28719b6
Refuse a circular block graph before exploding or bounding it

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Draw custom arrowhead blocks at leader tips

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Cover the MLINE-hidden, diamond, and direct self-reference cycle cases

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ab66bec
Snapshot a leader's arrowhead block before its contents are cloned

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68fe3b8
Mask inverted wipeout clips and ignore the clip mode when clipping is off

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Draw MLINE cut segments from their stored positions

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2ea9352
Fix round 1 for Task 6: harden thin inverted-wipeout ring assertions

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8bbd846
Correct the MLINE cut documentation and cover the closed and non-finite cases

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c5feac0
Add a golden that exercises every newly drawn feature

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4d6a47e
Polish Task 8's golden: notification guard, non-degenerate wipeout fixture

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03416ee
Follow every dimension-style block edge when healing and guarding

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82cecfa
Record what plan 10 actually shipped, and the widened block-edge coverage

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Follow a dimension's picture block, the fifth cloning edge

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Snapshot and heal around a top-level dimension's UpdateBlock()

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dd4b145