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26179f7428 |
Draw object transparency on screen, in exports and in plots (#764)
* Draw object transparency on screen, in exports and in plots Transparency was read and saved (entity group 440, layer xdata, ByLayer and ByBlock) but never drawn. Display lists now carry each object's effective transparency (its own, its layer's, or the block reference's), and: - the canvas (GPU and CPU paths), ui.render and PNG/SVG exports blend it; TRANSPARENCYDISPLAY turns it off on screen and is now on by default, as in AutoCAD (initial value 1); - plots draw it only when "Plot transparency" is on: a page setup option (PAGESETUP `plotTransparency`, a checkbox in the Page Setup Manager and the Plot dialog), overridable per plot, with PLOTTRANSPARENCYOVERRIDE (0 never, 1 the setting, 2 always). PDF gets /ExtGState alpha, PNG plots blend, SVG uses opacity. Plots without it are byte-identical to before. The public DXF Reference has no plot layout flag for plot transparency, so the option is kept in the session and in JSON, not in DXF/DWG. Co-Authored-By: Claude Opus 5.5 <[email protected]> * Transparency fixes: attributes, PDF overlaps, drag previews - Attributes draw with their own transparency (their definition's, layer 0 meaning the reference's layer, ByBlock the reference's) instead of the block reference's. - PDF plots stroke overlapping transparent objects one by one, so they build up where they cross as in PNG plots; opaque output is unchanged. - Drag and rubber-band previews follow TRANSPARENCYDISPLAY. - Effective transparency is worked out only when it is drawn, reusing the layer the property lookup already found. Co-Authored-By: Claude Opus 5.5 <[email protected]> * Transparency: one PDF stroke per transparent primitive; opaque rebuilt previews - PDF plots never batch two transparent primitives into one path. Block and viewport contents share their reference's handle, so the per-object flush missed them; each primitive now blends on its own, as in PNG plots and on screen. Opaque output is unchanged. - Previews the session rebuilds with the current properties (rubber bands, copies of objects) are drawn opaque again: they carry CLAYER's transparency, not the objects'. The GPU drag of the objects themselves keeps following TRANSPARENCYDISPLAY. - Tests for attributes on a transparent reference layer, attributes without a definition, and the drag cache across the TRANSPARENCYDISPLAY toggle. Co-Authored-By: Claude Opus 5.5 <[email protected]> * Selection like AutoCAD: colour highlight and the Options Selection tab Selecting or hovering an object outlined each filled primitive (TrueType glyphs, dimension and leader arrowheads, solid hatches, wide polylines) by the rectangle around its triangles, and dashed everything else. A selected dimension's text became a row of dashed boxes, one per glyph, and its closed arrowheads small rectangles. Selected objects are now redrawn in the selection colour: lines solid, fills filled half see-through (so the lines and text on a highlighted hatch stay visible), and the whole object reads as selected, text and arrowheads included. A wipeout is always outlined, since filling it would hide the drawing under it. The Options dialog's Selection tab is laid out as AutoCAD's, with the settings CADCraft can act on, each one AutoCAD's variable, kept in the user profile: - Selection modes: noun/verb selection (PICKFIRST), Shift to add (PICKADD), Object grouping (PICKSTYLE bit 1, now saved in the profile). - Selection effect color (selectionColor, an interface preference; null is the theme's). - Grips: Show grips (GRIPS) and the object selection limit for display of grips (GRIPOBJLIMIT, 100; 0 no limit): grips are neither drawn nor picked beyond it. - Selection preview (SELECTIONPREVIEW): the object under the cursor is highlighted when a command is active (2) and when none is (1). - Visual Effect Settings: the selection area effect (SELECTIONAREA, WINDOWAREACOLOR 150, CROSSINGAREACOLOR 100, SELECTIONAREAOPACITY 25) and the Selection Preview Filter (PREVIEWFILTER 3: 1 objects on locked layers, 2 xrefs, 4 tables, 8 multiline text, 16 hatches, 32 groups). As in AutoCAD these are typed, not on the dialog: HIGHLIGHT (0 shows only the grips of selected objects; not saved, so every session starts highlighted), SELECTIONEFFECT (1 the selection colour, 0 dashed lines with fills outlined along their real boundary) and PREVIEWEFFECT (the preview dashed 0, thicker 1 or both 2). Left for later, as CADCraft lacks what they control: lasso, grip tips and menus, group grips, grips within blocks, associative hatch selection, command and property preview, PICKDRAG, PICKAUTO and PROPOBJLIMIT. DisplayList::fill_outlines returns the boundary of the region a filled primitive covers as closed polylines (edges only one triangle has; the slab filler's horizontal cuts, which need not line up between trapezoids, are split at every x on their line and kept where an odd number cover them), falling back to the bounding box over 600,000 vertices. The GPU and CPU highlight paths and the drawing comparison overlay share the same looks. The new labels have Ukrainian rows (the required catalog); other languages fall back to English. Co-Authored-By: Claude Opus 5.5 <[email protected]> --------- Co-authored-by: EP995LAB <[email protected]> Co-authored-by: Claude Opus 5.5 <[email protected]> Co-authored-by: Cody Vogt <[email protected]> Co-authored-by: Brandon Thomas <[email protected]> |
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b19188919d |
DXF/DWG: write the Model layout's plot type as extents, not "Layout information" (#765)
The Model layout was written with the default page setup, whose "layout" plot area is plot type 5, "Layout information" (DXF Reference, PLOTSETTINGS group 74). That means nothing for model space: opened in AutoCAD 2027, a drawing saved by CADCraft had a blank "What to plot", no preview and no scale in the Plot dialog for Model. Model space now gets what PLOT does for it: the drawing extents scaled to fit (74 = 1, 75 = 0). DWG saves go through the same writer; the reader already ignores the Model layout's plot settings. Co-authored-by: EP995LAB <[email protected]> Co-authored-by: Claude Opus 5.5 <[email protected]> |