solvespace/CHANGELOG.md

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Changelog
=========
3.0
---
New sketch features:
* Extrude, lathe, translate and rotate groups can use the "assembly"
boolean operation, to increase performance.
* The solid model of extrude and lathe groups can be suppressed,
for splitting a single model in multiple parts to export,
or if only the generated entities are desired, without the mesh.
* Translate and rotate groups can create n-dimensional arrays using
the "difference" and "assembly" boolean operations.
* A new sketch in workplane group can be created based on existing workplane.
* TTF text request has two additional points on the right side, which allow
constraining the width of text.
* Image requests can now be created, similar to TTF text requests.
This replaces the "style → background image" feature.
* Irrelevant points (e.g. arc center point) are not counted when estimating
the bounding box used to compute chord tolerance.
* When adding a constraint which has a label and is redundant with another
constraint, the constraint is added as a reference, avoiding an error.
* Datum points can be copied and pasted.
* "Split Curves at Intersection" can now split curves at point lying on curve,
not just at intersection of two curves.
* Property browser now shows amount of degrees of freedom in group list.
New constraint features:
* When dragging an arc or rectangle point, it will be automatically
constrained to other points with a click.
* When selecting a constraint, the requests it constraints can be selected
in the text window.
* When selecting an entity, the constraints applied to it can be selected
in the text window.
New export/import features:
* Three.js: allow configuring projection for exported model, and initially
use the current viewport projection.
* Wavefront OBJ: a material file is exported alongside the model, containing
mesh color information.
* DXF/DWG: 3D DXF files are imported as construction entities, in 3d.
New rendering features:
* The "Show/hide hidden lines" button is now a tri-state button that allows
showing all lines (on top of shaded mesh), stippling occluded lines
or not drawing them at all.
* The "Show/hide outlines" button is now independent from "Show/hide edges".
New measurement/analysis features:
* New choice for base unit, meters.
* New command for measuring total length of selected entities,
"Analyze → Measure Perimeter".
* New command for measuring center of mass, with live updates as the sketch
changes, "Analyze → Center of Mass".
* New option for displaying areas of closed contours.
* When selecting a point and a line, projected distance to current
workplane is displayed.
Other new features:
* New command-line interface, for batch exporting and more.
* New link to match the on-screen size of the sketch with its actual size,
"view → set to full scale".
* When zooming to fit, constraints are also considered.
* When clicking on an entity that shares a place with other entities,
the entity from the current group is selected.
* When dragging an entity that shares a place with other entities,
the entity from a request is selected. For example, dragging a point on
a face of an extrusion coincident with the source sketch plane will
drag the point from the source sketch.
* In expressions, numbers can contain the digit group separator, "_".
* The "=" key is bound to "Zoom In", like "+" key.
* The numpad decimal separator key is bound to "." regardless of locale.
* On Windows, full-screen mode is implemented.
Bugs fixed:
* A point in 3d constrained to any line whose length is free no longer
causes the line length to collapse.
* Curve-line constraints (in 3d), parallel constraints (in 3d), and
same orientation constraints are more robust.
* Adding some constraints (vertical, midpoint, etc) twice errors out
immediately, instead of later and in a confusing way.
* Constraining a newly placed point to a hovered entity does not cause
spurious changes in the sketch.
* Points highlighted with "Analyze → Show Degrees of Freedom" are drawn
on top of all other geometry.
* A step rotate/translate group using a group forced to triangle mesh
as a source group also gets forced to triangle mesh.
* Paste Transformed with a negative scale does not invert arcs.
2.x
---
Bug fixes:
* Do not crash when changing an unconstrained lathe group between
union and difference modes.
2.3
---
Bug fixes:
* Do not crash when applying a symmetry constraint to two points.
* Fix TTF font metrics again (properly this time).
* Fix the "draw back faces in red" option.
* Fix export of wireframe as 3D DXF.
* Various minor crashes.
2.2
---
Other new features:
* OS X: support 3Dconnexion devices (SpaceMouse, SpaceNavigator, etc).
* GTK: files with uppercase extensions can be opened.
Bug fixes:
* Do not remove autosaves after successfully opening a file, preventing
data loss in case of two abnormal terminations in a row.
* Do not crash when changing autosave interval.
* Unbreak the "Show degrees of freedom" command.
* Three.js: correctly respond to controls when browser zoom is used.
* OS X: do not completely hide main window when defocused.
* GTK: unbreak 3Dconnexion support.
* When pasting transformed entities, multiply constraint values by scale.
* Fix TTF font metrics (restore the behavior from version 2.0).
* Forcibly show the current group once we start a drawing operation.
* DXF export: always declare layers before using them.
* Do not truncate operations on selections to first 32 selected entities.
* Translate and rotate groups inherit the "suppress solid model" setting.
* DXF: files with paths containing non-ASCII or spaces can be exported
or imported.
* Significantly improved performance when dragging an entity.
* Various crashes and minor glitches.
2.1
---
New sketch features:
* Lathe groups create circle and face entities.
* New toolbar button for creating lathe groups.
* Chord tolerance is separated into two: display chord tolerance (specified
in percents, relative to model bounding box), and export chord tolerance
(specified in millimeters as absolute value).
* Bezier spline points can be added and removed after the spline is created.
* When an unconstrained extrusion is switched between "union" and
"difference", its normal is flipped.
* Groups can be added in the middle of the stack. Note that this results
in files incompatible with version 2.0.
* Active group can be removed.
* Removing an imported group does not cause all subsequent groups to also
be removed.
* When a new group with a solid is created, the color is taken from
a previous group with a solid, if any.
* Entities in a newly active group do not become visible.
* When entities are selected, "Zoom to fit" zooms to fit only these
entities and not the entire sketch.
* Zero-length edges are reported with a "zero-length error", not
"points not all coplanar".
New constraint features:
* Height of the font used for drawing constraint labels can be changed.
* New constraint, length difference, placed with J.
(Patch by Peter Ruevski)
* Horizontal/vertical constraints are automatically added if a line segment
is close enough to being horizontal/vertical. This can be disabled by
holding Ctrl.
* Reference dimensions and angles can be placed with Shift+D and Shift+N.
* Copying and pasting entities duplicates any constraints that only involve
entities in the clipboard, as well as selected comments.
* Diameter constraints can be shown as radius.
* The "pi" identifier can be used in expressions.
* Constraint labels can be snapped to grid.
* Integer angles are displayed without trailing zeroes.
* Angle constraints have proper reference lines and arrowheads.
* Extension lines are drawn for point-line distance constraints.
New solver features:
* Sketches with redundant and unsolvable constraints are distinguished.
* New group setting, "allow redundant constraints". Note that it makes
the solver less stable.
New rendering and styling features:
* New line style parameter: stippling, based on ISO 128.
* Outlines of solids can be drawn in a particular style (by default, thick
lines) controlled by the "Show outline of solid model" button.
* Occluded edges can be drawn in a particular style (by default, stippled
with short dashes) controlled by the "Show hidden lines" button.
* Solids can be made transparent.
New export/import features:
* The old "import" command (for .slvs files) is renamed to "link".
* If a linked .slvs file is not found, first the relative path recorded
in the .slvs file is checked and then the absolute path; this is
an inversion of the previously used order. If it is still not found,
a dialog appears offering to locate it.
* DXF and DWG files can be imported, with point-coincident, horizontal and
vertical constraints automatically inferred from geometry, and distance
and angle constraints created when a dimension placed against geometry
exists.
* Triangle mesh can be exported for viewing in the browser through WebGL.
* Export dialogs remember the last file format used, and preselect it.
* Exported DXF files have exact circles, arcs and splines instead of
a piecewise linear approximation (unless hidden line removal was needed).
* Exported DXF files preserve color and line thickness.
* In exported DXF files, constraints are represented as DXF dimensions,
instead of piecewise linear geometry.
* When exporting 2d views, overlapping lines are removed.
Other new features:
* Native Linux (GTK 2 and GTK 3) and Mac OS X ports.
* Automatically save and then restore sketches if SolveSpace crashes.
(Patch by Marc Britten)
* Unicode is supported everywhere (filenames, group names, TTF text,
comments), although RTL scripts and scripts making heavy use of ligatures
are not rendered correctly.
* The vector font is grid-fitted when rendered on screen to make it easier
to read regardless of its size.
2.0
---
Initial public release.