Commit Graph

303 Commits (122920d3ee21ff456cf8f528f1eeeee83dde0d5d)

Author SHA1 Message Date
EvilSpirit 7b8e8b0b41 DXF: export color as indexed, not RGB.
The version of AutoCAD we advertise is unable to read RGB color, so
software attempting to be compatible with it ignores color attributes.
2016-05-17 11:47:49 +00:00
whitequark e129755d66 Offer to save file when closing if it is unsaved. 2016-05-11 07:43:04 +00:00
whitequark 005ff7e31b GTK: fix GTK3 build. 2016-05-10 13:10:41 +00:00
whitequark ab8fdcb273 GTK: don't set the "Keep above" hint on text window.
This hint is not recommended for direct use by applications, and for
a good reason: it's very annoying. Moreover, what we want is not
"keep above" but rather "keep on the same layer as graphics window",
which is already achieved by setting window type to "utility"
on GNOME and Unity WMs, and by setting the transient window hint
for the text window on KDE WM.
2016-05-10 01:21:36 +00:00
whitequark 4a8675c120 DXF: regenerate after importing.
Without this, some freshly imported entities appear with incorrect
styles.
2016-05-09 12:43:52 +00:00
whitequark 8f515f3b90 GTK: don't raise graphics window in HideTextEditControl().
This screws up window managers like fvwm, which don't respect
the ICCCM "Keep Above" flag. I don't remember why it's there and
it doesn't appear that removing it has any ill effect.
2016-05-08 00:02:21 +00:00
whitequark e969bc94ad Enable -Wall -Wextra -Wno-unused-parameter on GCC/Clang.
This is good practice and helps to catch bugs. Several changes
were made to accomodate the newly enabled warnings:
  * -Wunused-function:
    * in exposed/, static functions that were supposed to be inlined
      were explicitly marked as inline;
    * some actually unused functions were removed;
  * -Wsign-compare: explicit conversions were added, and in
    the future we should find a nicer way than aux* fields;
  * -Wmissing-field-initializers: added initializers;
  * -Wreorder: reordered properly;
  * -Wunused-but-set-variable: remove variable.

-Wunused-parameter was turned off as enabling it would result in
massive amount of churn in UI code. Despite that, we should enable
it at some point as it has a fairly high SNR otherwise.
2016-05-08 00:01:35 +00:00
whitequark ee30fa2b0d Work around an MSVC 2013 bug related to unique_ptr.
The following bug is tickled by calling emplace() on a map with
non-copyable but moveable values:
https://connect.microsoft.com/VisualStudio/feedbackdetail/view/960021

Fortunately, we don't actually need emplace() here as operator[]
will create values if they aren't there.
2016-05-07 22:36:41 +00:00
whitequark 12c9858d06 Only flip extrusion normal when transitioning between union and difference.
After commit a8465cbc8, extrusion normal would be adjusted when
switching between union and assembly groups, if ever implemented.
2016-05-07 06:36:30 +00:00
EvilSpirit a44a4665a8 In GenerateAll, accept explicitly permitted redundant sketches as OK.
Before this commit, they were considered unsolved and were re-solved
over and over unnecessarily.
2016-05-07 05:43:16 +00:00
whitequark febe0f5282 Rename the old "Import / Assemble" feature to "Link / Assemble".
This better reflects what it does and avoids clashes with the new
DXF import feature.
2016-05-07 05:27:54 +00:00
whitequark d05e9a938b DWG: implement import.
Before this commit, the file filter suggested that DWG was readable,
but it wasn't.

Also, report any failures while reading DWG and DXF files.
2016-05-07 05:17:23 +00:00
whitequark 7da5cfbaae Don't hold all existing system fonts open.
On Windows, this exhausts file descriptors and everything (e.g.
opening and saving files) breaks.
2016-05-07 04:20:06 +00:00
EvilSpirit a21a327a97 DXF: create certain constraints during import.
Specifically:
  * point-coincident, horizontal and vertical constraints (inferred);
  * point-point and point-line distance, angle, radius and diameter
    constraints (based on DXF dimensions).
2016-05-07 04:02:34 +00:00
EvilSpirit 70d84b30e8 DXF: implement import. 2016-05-07 04:02:34 +00:00
EvilSpirit a8465cbc8a Flip extrusion normal when switching between union and difference.
This is done because a meaningful union extrusion is almost never
a meaningful difference extrusion, and saves a bunch of common
manual work.

To avoid creating invalid sketches this isn't done when there are any
constraints.
2016-05-06 23:07:19 +00:00
whitequark affc88f342 Three.js: various control improvements.
Specifically:
  * touchscreen devices are now supported;
  * rotation is now more like what SolveSpace itself does.

The code is split in two parts because MSVC can't handle string
literals longer than 16Ki.
2016-05-06 17:42:01 +00:00
EvilSpirit e1f614101f Only generate split triangles when exporting if needed.
Before this commit, when exporting a vector file without the shaded
model shown, or similarly when using formats that we do not export
the mesh to, we still generate (and then discard) the mesh in paint
order. This is a waste of time.
2016-05-04 04:48:24 +00:00
EvilSpirit a75bf6e216 Fix incorrect condition ordering that causes a crash. 2016-05-04 04:34:03 +00:00
EvilSpirit f5d8b1dc6b Implement missing parts of 09f59ddb.
This caused no crashes, but some extrusions resulted in a wrong mesh.
2016-05-04 03:21:12 +00:00
whitequark ba4cb28251 Fix uninitialized variable access. 2016-05-04 03:21:12 +00:00
whitequark e61bac2797 Refactor file filters to not use preprocessor magic.
The immediate reason for refactoring this was that the GTK port broke
after 52af7256 since config.h is not included anymore, but it was
a fragile piece of code I will shed no tears for.

While we're at it, get rid of the mutable std::string &file to be
consistent with our conventions.
2016-05-04 03:21:12 +00:00
whitequark 52af725606 Only #include "config.h" when we need something from it.
config.h now includes the git hash and so, as long as it's included
in solvespace.h, any change of git HEAD will trigger a complete
recompilation, which makes bisecting especially annoying.

While we're at it, remove HAVE_STDINT_H from it, since we require
C++11 and all MSVC versions that include C++11 also include stdint.h.
2016-04-23 23:06:31 +00:00
whitequark 2fed0587ea Embed git commit hash in the "About" dialog.
Also, remove usage of __DATE__ and __TIME__ to make the build fully
deterministic. They are redundant once we have the commit hash,
anyway.
2016-04-23 22:53:21 +00:00
EvilSpirit 1c51205a11 DXF: reassemble piecewise linear fragments into polylines. 2016-04-23 19:39:39 +00:00
whitequark 04a79b4308 OS X: correctly make text window the key window.
This is a refactoring bug introduced in 23dc36d.
2016-04-23 19:39:39 +00:00
EvilSpirit dabd57847e MSVC: work around binary size explosion. 2016-04-23 19:39:39 +00:00
whitequark c17f1160dc Allow snapping constraint labels to grid.
This is pretty much the only way to get a sketch with tidily placed
dimensions.
2016-04-23 04:38:32 +00:00
whitequark 1142f85ff5 Fix edit control width calculation on GTK3.
Also, bring the GTK2 width calculation in line with the GTK3 one.
2016-04-23 04:38:32 +00:00
whitequark 6cb6a2cf27 Forcibly show text window on some context menu actions.
Specifically:
  * Group Info
  * Style Info
  * Assign to Style → Newly Created Custom Style...

These context actions are meaningless without viewing or manipulating
text window.
2016-04-23 04:38:32 +00:00
whitequark a61544ea9c Fix empty space at the end of the tooltips.
Also, bring MakeAcceleratorLabel to modernity.
2016-04-23 04:38:32 +00:00
EvilSpirit accd73fe02 Improve rendering of workplane stipple lines.
After this commit, a workplane perpendicular to the camera is
rendered with all dashes aligned, making it look more tidy.
2016-04-17 03:11:19 +00:00
whitequark efb9fa3d69 Actually display the "zero-length edge!" polygon error.
Before this commit, the initial state allCoplanar=false took
precedence over allNonZeroLen=false, since detecting a zero-length
edge short-circuits AssembleLoops.
2016-04-17 01:33:15 +00:00
whitequark b3df595769 Don't crash after right-clicking on derived entities. 2016-04-17 01:16:47 +00:00
EvilSpirit a4a353f01b Reverse arrows on an angle constraint when the label is outside. 2016-04-16 12:05:10 +00:00
EvilSpirit 3b7e7289c8 Continue an extension arc towards angle constraint label. 2016-04-16 09:05:21 +00:00
EvilSpirit 92f5bd450c Display angle in the middle of its dimension line, not adjacent.
Less visual clutter and more consistency with distance constraints.
2016-04-16 09:05:21 +00:00
EvilSpirit 07f3ab95e4 Draw extension lines for angle constraints between line segments. 2016-04-16 09:05:21 +00:00
whitequark 1098e598ae Quit export mode after new file. 2016-04-16 09:05:21 +00:00
whitequark 6b123f2d34 Refactor Style::LoadFactoryDefaults.
This also fixes a bug where the hidden-edge style would be reset
to continuous when factory defaults are loaded.
2016-04-16 05:49:37 +00:00
whitequark a7f4d0fffc Fully reinitialize graphics window in AfterNewFile().
Before this commit it was possible to cause a crash by e.g. selecting
a face and pressing Ctrl+N, or numerous other glitches.
2016-04-16 04:19:14 +00:00
EvilSpirit e74ccb3010 Perform grid fitting on the builtin vector font.
Grid fitting is performed only on glyph boundaries, since glyphs
include curves converted to pwl, which would be mangled by per-point
grid fitting.

Grid fitting is only performed when the plane in which text is
laid out is parallel to the viewing plane.

Grid fitting is only performed when rendering for display; there
are no devices with dpi low enough for grid fitting to become
profitable, and in any case we cannot predict what the dpi would
be anyway.
2016-04-16 04:19:14 +00:00
EvilSpirit bd6c4c0cbd Use 16-bit integers to store builtin vector font data.
This significantly increases font legibility, since curves are
represented more precisely. The file size is increased by mere ~1M
(from 7M).
2016-04-16 03:10:56 +00:00
whitequark 0128b86796 Improve builtin vector font positioning.
First, a larger origin offset is applied in ssglWriteText. This moves
the text so that it doesn't overlap the workplane boundary.

Second, a different offset is applied in ssglWriteTextRefCenter.
After this, the middle stroke of "E" is vertically aligned with
the reference point, and the overall label is horizontally aligned
with the reference point more precisely.
2016-04-16 03:10:56 +00:00
whitequark bcb484e941 Do not display trailing zeroes for integer angles.
Angles that aren't an integral number of degrees are extremely
rare, and the label is often in a tight space, which warrants
special-casing this.
2016-04-16 03:10:56 +00:00
whitequark 7a01c840d3 Display and edit length difference constraints as lengths.
Before this commit, they worked sort of like length ratio
constraints, leading to wildly incorrect results in inch mode.
2016-04-16 03:10:56 +00:00
whitequark bd51a9edac Use the Unicode diameter symbol ⌀ in diameter constraints.
Before this commit, the diameter symbol was drawn using custom code,
which is not necessary anymore.
2016-04-16 03:10:56 +00:00
whitequark 23dc36da9b Make graphics window edit control width fit the content.
Before this commit, the graphics window edit control always had
a width of 30 average character widths.

After this commit, the edit control has a width of 5 average
character widths (for numeric constraints) or 30 average character
widths (for comment constraints), or just enough to display
the entire value being edited, whichever is greater.

This makes the edit control overlap the sketch less in case of
editing numeric constraints (since in most cases, the numbers being
edited are short), and removes annoying scrolling in case of editing
long comments.
2016-04-16 03:10:56 +00:00
whitequark d17771064a Ensure edit control font size matches font size of text being edited.
Before this commit, the position of the edit box was adjusted
by trial and error, as far as I can tell. This commit changes
the positioning machinery for edit controls as follows:

The coordinates passed to ShowTextEditControl/ShowGraphicsEditControl
now denote: X the left bound, and Y the baseline.

The font height passed to ShowGraphicsEditControl denotes
the absolute font height in pixels, i.e. ascent plus descent.

Platform-dependent code uses these coordinates, the font metrics
for the font appropriate for the platform, and the knowledge of
the decorations drawn around the text by the native edit control
to position the edit control in a way that overlays the text inside
the edit control with the rendered text.

On OS X, GNU Unifont (of height 16) has metrics identical to
Monaco (of height 15) and so as an exception, the edit control
is nudged slightly for a pixel-perfect fit.

Also, since the built-in vector font is proportional, this commit
also switches the edit control font to proportional when editing
constraints.
2016-04-15 21:53:08 +00:00
whitequark 0f304b4c64 Rigorously treat font scale factors.
The old values were chosen without a good understanding of font
metrics.
2016-04-15 21:53:08 +00:00
whitequark e7057418df When there's a shell, always render solids using sharp edges solids.
Before this commit, solids in the viewport were rendered with
"emphasized edges", with the intention to highlight selectable faces.
However, selectable faces are already surrounded by entities, and
so rendering emphasized edges adds little value.

After this commit, solids in the viewport are always rendered with
"sharp edges", like they are exported.
2016-04-15 21:53:08 +00:00
EvilSpirit 24fc65a71c Allow rendering solid outlines using a distinct style.
A new button is added, "Show/hide outline of solid model".

When the outline is hidden, it is rendered using the "solid edge"
style. When the outline is shown, it is rendered using the "outline"
style.

In SolveSpace's true WYSIWYG tradition, the 2d view export follows
the rendered view exactly.

Moreover, shell edges are not rendered anymore, since there is not
much need in them anymore and not drawing them lessens the overlap
between various kinds of lines, which already includes entities,
solid edges and outlines.
2016-04-15 21:53:08 +00:00
EvilSpirit d1a2eb6d18 Allow rendering hidden solid edges using a distinct style.
Before this change, the two buttons "Show/hide shaded model" (S) and
"Show/hide hidden lines" (H) resulted in drawing the following
elements in the following styles:

  Button | Non-occluded | Non-occluded |  Occluded   |   Occluded
  state  | solid edges  |   entities   | solid edges |   entities
 --------+--------------+--------------+-------------+--------------
  !S !H  |              |              | solid-edge  | entity style
 --------+              |              +-------------+--------------
   S !H  |              |              |         invisible
 --------+  solid-edge  | entity style +-------------+--------------
  !S  H  |              |              |             |
 --------+              |              | solid-edge  | entity style
   S  H  |              |              |             |
 --------+--------------+--------------+-------------+--------------

After this change, they are drawn as follows:

  Button | Non-occluded | Non-occluded |  Occluded   |   Occluded
  state  | solid edges  |   entities   | solid edges |   entities
 --------+--------------+--------------+-------------+--------------
  !S !H  |              |              | solid-edge  | entity style
 --------+              |              +-------------+--------------
   S !H  |              |              |         invisible
 --------+  solid-edge  | entity style +-------------+--------------
  !S  H  |              |              |             |
 --------+              |              | hidden-edge |  stippled¹
   S  H  |              |              |             |
 --------+--------------+--------------+-------------+--------------

  ¹ entity style, but the stipple parameters taken from hidden-edge

In SolveSpace's true WYSIWYG tradition, the 2d view export follows
the rendered view exactly.

Also, it is now possible to edit the stipple parameters of built-in
styles, so that by changing the hidden-edge style to non-stippled
it is possible to regain the old behavior.
2016-04-15 21:53:08 +00:00
EvilSpirit d55300232f Don't generate each edge twice in MakeCertainEdgesInto.
This messes up edges when they are rendered stippled, and
unnecessarily makes exported files bigger.
2016-04-15 21:53:08 +00:00
EvilSpirit 1bf7777815 Only export sharp edges of the triangle mesh.
Before this commit, "emphasized edges" were displayed as well as
exported. An "emphasized edge" is an edge between triangles that
come from different faces. They are helpful in the rendered
display because they hint at the locations of faces, but not
in the 2d export since they just clutter the drawing.

After this commit, "emphasized edges" are displayed but "sharp
edges" are exported. A "sharp edge" is an edge between triangles
where the two matching vertexes have different normals, indicating
a discontiguity in the surface. "Sharp edges" are also displayed
while post-viewing the exported geometry.
2016-04-15 21:53:08 +00:00
EvilSpirit 7e6a11c958 Refactor SKdNode::FindEdgeOn.
Extract output parameters into a separate structure.
2016-04-15 21:53:08 +00:00
EvilSpirit 7c60be8203 Remove overlapping line segments when exporting a 2d view.
This adds a new style attribute, "Z-index", which is not currently
displayed and cannot be modified. It may be exposed in the UI later.
2016-04-15 21:53:08 +00:00
EvilSpirit 16ea824456 Allow adding spline points. 2016-04-15 06:11:03 +00:00
EvilSpirit 77d8291216 Allow removing spline points. 2016-04-15 06:11:03 +00:00
whitequark 2d25bdb51f When choosing color for a new group, consider active, not last, group. 2016-04-15 06:11:03 +00:00
EvilSpirit 98e0a30a98 Consider plane faces when zooming to fit. 2016-04-15 06:11:03 +00:00
whitequark 83f5b60228 Fix a macro redefinition warning.
Including windows.h defines "IN".
2016-04-15 06:11:03 +00:00
EvilSpirit 09f59ddbc0 Get rid of if(!this).
According to the C++ standard, "this" is never NULL, so checks
of the form "if(!this)" can be legally optimized out. This
breaks SolveSpace on GCC 6, and probably on other compilers and
configurations.
2016-04-15 06:11:03 +00:00
whitequark 11565e081d Refactor export code to pass around hStyle, not uint32_t. 2016-04-14 18:54:09 +00:00
EvilSpirit 27b403faf5 DXF: refactor. 2016-04-14 18:54:09 +00:00
EvilSpirit f88cb1195b DXF: split entities by layers according to their line styles. 2016-04-14 18:54:09 +00:00
EvilSpirit d88149e705 SVG: export stippled lines.
Also, factor out styles in the exported file, making it much
smaller.
2016-04-14 18:54:09 +00:00
EvilSpirit 94cba11f2a PDF, EPS: export stippled lines. 2016-04-08 11:32:16 +00:00
EvilSpirit a6f7200092 Display point-circle or point-arc distance, when selected. 2016-04-08 11:21:51 +00:00
EvilSpirit 55e3162a05 When creating a new group, use the color of last requested solid. 2016-04-08 11:21:40 +00:00
EvilSpirit 29296447a9 Add the Ukrainian letters [ЄІЇєіїҐґ] to builtin vector font. 2016-04-08 11:01:29 +00:00
EvilSpirit d72b250a64 Don't draw zero-length lines.
Causes "Vector::WithMagnitude(...) of zero vector!"
2016-04-08 10:55:31 +00:00
EvilSpirit e19a2f4f35 Accept maybeFat in ssglStippledLine. 2016-04-08 10:55:11 +00:00
whitequark 1e0fcf1e6c OS X: bundle Freetype.
I erroneously believed that Freetype was shipped with OS X, whereas
it is not, and so we need to ship it ourselves.
2016-04-08 10:47:25 +00:00
EvilSpirit 46b67d5457 Three.js: apply export scale factor to edges. 2016-04-08 10:19:55 +00:00
EvilSpirit e17a24814b DXF: only export visible constraints. 2016-04-08 10:15:29 +00:00
EvilSpirit 73f28b9731 Make normals and workplanes non-stylable.
This does not seem to have any useful application, and it can
result in odd misrenderings with some styles.
2016-04-08 10:12:28 +00:00
EvilSpirit 614902ebdd Don't create multiple undo steps when pasting. 2016-04-08 09:54:46 +00:00
EvilSpirit 3d334d153d Disable autoconstrainer while Ctrl is held. 2016-04-08 09:51:10 +00:00
whitequark 6f67ec2d48 GTK: make the file filter hack more robust. 2016-03-25 11:08:04 +00:00
whitequark fb0aee91ea Add a degree symbol to angle constraints. 2016-03-23 14:16:17 +00:00
whitequark c061fb9416 Restore sensible order of group creation toolicons.
They now have a similar function within each row.
2016-03-19 13:24:52 +00:00
whitequark 762af7d2ad Regenerate the sketch after allowing redundant constraints. 2016-03-18 20:46:46 +00:00
Adam Jaremko b76d7026e0 OS X: Fix iconutil build error.
Fix iconutil build errors: “Iconset contains no image resources.”,
followed by “Failed to generate ICNS.”

The error is produced by iconutil because the AppIcon.iconset contains
only symbolic links to the icon resources which aren’t followed.

Replace the symbolic links with duplicates of the original resources,
as well as conform to the “High Resolution Guidelines for OS X” by
adding additional sizes and dpi.
2016-03-17 00:31:32 -04:00
whitequark e87e787d3f Add "Paste Transformed..." to context menu, when applicable. 2016-03-15 12:11:00 +00:00
whitequark 6e56b00b9a Don't perform hit testing if we haven't painted the graphics window.
This change is quite subtle. The goal is to improve responsiveness
of highlighting even further. To understand this change you need
to keep in mind that Windows and Gtk have dramatically different
behavior for paint (WM_PAINT in Windows, expose in Gtk) and
mouse move events.

In Windows, WM_PAINT and WM_MOUSEMOVE, unless sent explicitly,
are synthesized: WM_MOUSEMOVE is delivered when there are no other
messages and the current cursor position doesn't match the remembered
one, and WM_PAINT is delivered when there are no other messages,
even WM_MOUSEMOVE. This is pretty clever because it doesn't swamp
programs that are slow to process either of those events with even
more of them, ensuring they remain responsive.

In Gtk, expose events are delivered at the end of the frame whenever
there is an invalid view, and every single mouse move that happened
will result in a separate event.

If mouse move events are handled quickly, then the behavior is
identical in either case:
  * process mouse move event
    * perform hit testing
    * invalidate view
  * no more events to process!
    * there are invalid views
      * repaint

If, however, mouse move events are handled slower, then the behavior
diverges. With Gtk:
  * process mouse move event
    * perform hit testing (slow)
      * while this happens, ten more mouse move events are added
    * invalidate view
  * end of frame!
    * there are invalid views
      * repaint
  * process mouse move event...
As a result, the Gtk-hosted UI hopelessly lags behind user input.
This is very irritating.

With Windows:
  * process mouse move event
    * perform hit testing (slow)
      * while this happens, mouse was moved
    * invalidate view
  * process mouse move event...
As a result, the Windows-hosted UI never repaints while the mouse
is moved. This is also very irritating.

Commit HEAD^ has fixed the problems with Gtk-based UI by making
hit testing so fast that mouse move events never quite overflow
the queue. There's still a barely noticeable lag but it's better.

However, the problems with Windows remained because while the queue
doesn't *overflow* with the faster hit testing code, it doesn't go
*empty* either! Thus we still don't repaint.

This commit builds on top of HEAD^ and makes it so that we don't
actually hit test anything if we haven't painted the result of
the previous hit test already. This fixes the problem on Windows
but also helps Gtk a little bit.

Curiously, the Cocoa-based UI never suffered from any of these
problems. To my understanding (it's somewhat underdocumented), it
processes mouse moves like Windows, but paints like Gtk.
2016-03-07 16:03:20 +00:00
whitequark bda2835e9f Cache bounding boxes.
This results in massive performance improvements for hit testing.
Files with very large amounts of entities (e.g. [1]) inflict
a delay of several seconds between moving the pointer and
highlighting an entity in commit HEAD^^^, whereas in this commit
the delay is barely perceptible.

[1]: http://solvespace.com/forum.pl?action=viewthread&parent=872
2016-03-05 16:48:56 +00:00
EvilSpirit e99eedd7a3 Check entity bounding box before hit testing edges. 2016-03-05 16:48:56 +00:00
EvilSpirit b054b9682a Cache generated bezier curves and edges in Entity. 2016-03-05 16:48:16 +00:00
EvilSpirit a0576e2a50 Allow changing text size for default styles.
This is especially useful for High-DPI displays on non-OS X.
2016-03-05 12:02:13 +00:00
EvilSpirit 96344c85a6 Eliminate DEFAULT_TEXT_HEIGHT from drawing code.
Instead, query the text height for constraint style.
2016-03-05 12:02:13 +00:00
EvilSpirit 1f0649d1bb Remove merge artifact. 2016-03-05 12:02:13 +00:00
EvilSpirit 1814cf3c0f DXF: export stippled line styles. 2016-03-05 12:02:13 +00:00
EvilSpirit 1170a91875 Implement stippled line styles from ISO 128.
Now it's possible to use a styled line to indicate e.g.
a centerline.
2016-03-05 12:02:13 +00:00
EvilSpirit 171f208cfb Extract Style::FillDefaultStyle. 2016-03-04 15:13:09 +00:00
whitequark c9a2092b9c Fix image export on *nix.
Before this commit, trying to export image on *nix platforms yielded
a black rectangle, since since there is nowhere to render to
when we're not in a GUI toolkit draw callback.

On Windows, nothing changes: we do a repaint without the toolbar,
glReadPixels, export. On *nix, we create another offscreen rendering
context, render into it, then destroy it. As a bonus this avoids
some minor flickering that would happen if we reused the regular
rendering path.
2016-03-04 15:11:14 +00:00
EvilSpirit a886746e71 DXF: export entities, dimensions and comments on separate layers. 2016-02-19 23:16:36 +00:00
EvilSpirit df0a1d64e4 DXF: include compatible AutoCAD version in format selector. 2016-02-19 23:16:36 +00:00
EvilSpirit f87152e8c0 DXF: export constraints with labels as DXF constraints, not pwl.
Specifically, the following constraint types:
  * pt-pt-distance
  * pt-line-distance
  * diameter
  * angle
  * comment
2016-02-19 23:16:36 +00:00
EvilSpirit e377eb8851 DXF: export color and line width. 2016-02-19 23:16:36 +00:00