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54f85832b7
mutter/clutter
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Robert Bragg 54f85832b7 util: tune point_in_poly test for polys in screen coords 
This makes a change to the original point_in_poly algorithm from:
http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html

The aim was to tune the test so that tests against screen aligned
rectangles are more resilient to some in-precision in how we transformed
that rectangle into screen coordinates. In particular gnome-shell was
finding that for some stage sizes then row 0 of the stage would become a
dead zone when going through the software picking fast-path and this was
because the y position of screen aligned rectangles could end up as
something like 0.00024 and the way the algorithm works it doesn't have
any epsilon/fuz factor to consider that in-precision.

We've avoided introducing an epsilon factor to the comparisons since we
feel there's a risk of changing some semantics in ways that might not be
desirable. One of those is that if you transform two polygons which
share an edge and test a point close to that edge then this algorithm
will currently give a positive result for only one polygon.

Another concern is the way this algorithm resolves the corner case where
the horizontal ray being cast to count edge crossings may cross directly
through a vertex. The solution is based on the "idea of Simulation of
Simplicity" and "pretends to shift the ray infinitesimally down so that
it either clearly intersects, or clearly doesn't touch". I'm not
familiar with the idea myself so I expect a misplaced epsilon is likely
to break that aspect of the algorithm.

The simple solution this patch applies is to pixel align the polygon
vertices which should eradicate most noise due to in-precision.

https://bugzilla.gnome.org/show_bug.cgi?id=641197
2011-03-07 13:26:19 +00:00
..
cally cally: Remove unused variables 2011-02-19 16:47:20 +00:00
cogl util: tune point_in_poly test for polys in screen coords 2011-03-07 13:26:19 +00:00
egl Add private header for event-related API 2011-02-18 16:35:36 +00:00
evdev Add private header for event-related API 2011-02-18 16:35:36 +00:00
fruity cogl: Adds _cogl_swap_buffers_notify for clutter backends 2011-01-21 16:18:10 +00:00
glx glx: Use g_set_error_literal() where appropriate 2011-03-04 23:58:12 +00:00
osx Add private header for event-related API 2011-02-18 16:35:36 +00:00
wayland Add private header for event-related API 2011-02-18 16:35:36 +00:00
win32 Add private header for event-related API 2011-02-18 16:35:36 +00:00
x11 x11: Use g_set_error_literal() 2011-03-04 23:53:45 +00:00
clutter-action.c
clutter-action.h
clutter-actor-box.c Merge branch 'private-cleanup' 2010-10-25 23:44:53 +01:00
clutter-actor-meta-private.h Move ActorMeta private function in the private header 2011-02-18 16:53:31 +00:00
clutter-actor-meta.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-actor-meta.h Move ActorMeta private function in the private header 2011-02-18 16:53:31 +00:00
clutter-actor-private.h clutter-actor: Add an internal _clutter_actor_get_opacity_override 2011-03-03 16:54:51 +00:00
clutter-actor.c clutter-actor: Add an internal _clutter_actor_get_opacity_override 2011-03-03 16:54:51 +00:00
clutter-actor.h More ISO C90 warning fixes in Clutter 2011-02-15 12:40:11 +00:00
clutter-align-constraint.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-align-constraint.h Appease the gods in introspection 2011-01-20 16:35:26 +00:00
clutter-alpha.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-alpha.h
clutter-animatable.c Use G_DEFINE_INTERFACE 2010-10-18 11:26:44 +01:00
clutter-animatable.h animatable: Allow passing a NULL animation 2010-07-31 10:56:09 +01:00
clutter-animation.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-animation.h animation: Allow detaching an animation from an actor 2010-09-10 11:18:53 +01:00
clutter-animator.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-animator.h
clutter-backend-private.h backend: Move event translators to the base class 2011-02-09 13:29:30 +00:00
clutter-backend.c Assert if we call backend API without a valid backend 2011-02-18 17:51:01 +00:00
clutter-backend.h Appease the gods in introspection 2011-01-20 16:35:26 +00:00
clutter-behaviour-depth.c Expose deprecated symbols whilst building Clutter 2011-01-20 13:29:37 +00:00
clutter-behaviour-depth.h Expose deprecated symbols whilst building Clutter 2011-01-20 13:29:37 +00:00
clutter-behaviour-ellipse.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-behaviour-ellipse.h Expose deprecated symbols whilst building Clutter 2011-01-20 13:29:37 +00:00
clutter-behaviour-opacity.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-behaviour-opacity.h Expose deprecated symbols whilst building Clutter 2011-01-20 13:29:37 +00:00
clutter-behaviour-path.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-behaviour-path.h Expose deprecated symbols whilst building Clutter 2011-01-20 13:29:37 +00:00
clutter-behaviour-rotate.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-behaviour-rotate.h Expose deprecated symbols whilst building Clutter 2011-01-20 13:29:37 +00:00
clutter-behaviour-scale.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-behaviour-scale.h Expose deprecated symbols whilst building Clutter 2011-01-20 13:29:37 +00:00
clutter-behaviour.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-behaviour.h Expose deprecated symbols whilst building Clutter 2011-01-20 13:29:37 +00:00
clutter-bezier.c
clutter-bezier.h
clutter-bin-layout.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-bin-layout.h
clutter-bind-constraint.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-bind-constraint.h bind-constraint: Add BIND_POSITION and BIND_SIZE 2011-01-25 11:14:37 +00:00
clutter-binding-pool.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-binding-pool.h Appease the gods in introspection 2011-01-20 16:35:26 +00:00
clutter-blur-effect.c Appease the gods in introspection 2011-01-20 16:35:26 +00:00
clutter-blur-effect.h Appease the gods in introspection 2011-01-20 16:35:26 +00:00
clutter-box-layout.c box-layout: Plug a memory leak 2010-10-08 13:29:49 +01:00
clutter-box-layout.h
clutter-box.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-box.h
clutter-cairo-texture.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-cairo-texture.h gtk-doc: Fixes for the API references 2010-11-08 16:01:19 +00:00
clutter-child-meta.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-child-meta.h
clutter-click-action.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-click-action.h click-action: add API to get modifier type 2011-01-17 17:31:46 +00:00
clutter-clone.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-clone.h
clutter-color-static.h color: Add named, global colors 2010-11-11 13:14:23 +00:00
clutter-color.c color: Mark the new static color API as being new from 1.6 2011-01-17 15:22:48 +00:00
clutter-color.h color: Mark the new static color API as being new from 1.6 2011-01-17 15:22:48 +00:00
clutter-colorize-effect.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-colorize-effect.h clutter-color-size-effect: Fix a minor typo in the docs 2011-02-16 14:11:59 +00:00
clutter-config.h.in build: Generate an instealled config header 2011-01-19 14:33:27 +00:00
clutter-constraint.c constraint: Queue a relayout on :enabled changes 2011-03-01 19:04:31 +00:00
clutter-constraint.h constraint: Add ::update_allocation() 2010-09-17 12:17:50 +01:00
clutter-container.c introspection: Override the GParamSpec type 2011-02-15 12:40:12 +00:00
clutter-container.h Merge remote-tracking branch 'nobled/wayland-fixes2' 2011-02-11 16:45:45 +00:00
clutter-debug.h osx: Improve the event loop 2011-01-31 13:43:12 +00:00
clutter-deform-effect.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-deform-effect.h build: Re-arrange headers 2010-11-18 18:23:49 +00:00
clutter-deprecated.h
clutter-desaturate-effect.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-desaturate-effect.h Appease the gods in introspection 2011-01-20 16:35:26 +00:00
clutter-device-manager-private.h Clean up crossing event synthesis code 2011-01-28 18:19:49 +00:00
clutter-device-manager.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-device-manager.h event/x11: Rework the way we translate X11 events 2011-01-21 10:25:43 +00:00
clutter-drag-action.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-drag-action.h drag-action: Added x-drag-threshold and y-drag-threshold properties 2010-09-07 10:40:49 +01:00
clutter-effect-private.h Move ClutterEffect private symbols to a private header 2011-02-18 16:00:39 +00:00
clutter-effect.c effect: Queue a redraw on :enabled changes 2011-03-01 19:04:31 +00:00
clutter-effect.h build: Re-arrange headers 2010-11-18 18:23:49 +00:00
clutter-enum-types.c.in
clutter-enum-types.h.in
clutter-event-private.h event: Add setters for ClutterEvent members 2011-02-28 14:16:23 +00:00
clutter-event-translator.c event/x11: Rework the way we translate X11 events 2011-01-21 10:25:43 +00:00
clutter-event-translator.h event/x11: Rework the way we translate X11 events 2011-01-21 10:25:43 +00:00
clutter-event.c Move the keysym ↔ Unicode table to .rodata 2011-02-28 14:16:24 +00:00
clutter-event.h event: Add setters for ClutterEvent members 2011-02-28 14:16:23 +00:00
clutter-feature.c Clean up clutter-private.h/4 2010-10-21 12:22:17 +01:00
clutter-feature.h
clutter-fixed-layout.c
clutter-fixed-layout.h
clutter-fixed.c Add caller-allocates annotations 2010-09-08 17:04:21 +01:00
clutter-fixed.h introspection: Skip some C-only structures 2010-12-10 17:15:39 +00:00
clutter-flow-layout.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-flow-layout.h
clutter-frame-source.c Start using the monotonic API in GLib ≥ 2.27 2010-11-17 16:19:10 +00:00
clutter-frame-source.h Expose deprecated symbols whilst building Clutter 2011-01-20 13:29:37 +00:00
clutter-group.c paint volumes: another pass at the design 2010-09-29 15:12:57 +01:00
clutter-group.h
clutter-id-pool.c Privatize all ClutterIdPool functions 2011-02-18 15:53:27 +00:00
clutter-id-pool.h Privatize all ClutterIdPool functions 2011-02-18 15:53:27 +00:00
clutter-input-device.c Add private header for event-related API 2011-02-18 16:35:36 +00:00
clutter-input-device.h device: Allow enabling/disabling non-master devices 2011-01-21 10:25:45 +00:00
clutter-interval.c interval: Remember to chain up to parent in finalize() 2010-10-25 00:31:36 +01:00
clutter-interval.h
clutter-keysyms-compat.h keysyms: Update the list 2010-12-02 09:53:00 +00:00
clutter-keysyms-table.c Move the keysym ↔ Unicode table to .rodata 2011-02-28 14:16:24 +00:00
clutter-keysyms-update.pl keysyms: Update the macros to CLUTTER_KEY_* 2010-09-10 17:54:52 +01:00
clutter-keysyms.h keysyms: Update the list 2010-12-02 09:53:00 +00:00
clutter-layout-manager.c Remove unnecessary GLib version checks 2010-10-18 11:26:45 +01:00
clutter-layout-manager.h Reduce the amount of g-ir-scanner warnings 2010-12-09 12:36:50 +00:00
clutter-layout-meta.c Conditionally use g_object_notify_by_pspec 2010-08-10 17:12:06 +01:00
clutter-layout-meta.h
clutter-list-model.c ClutterListModel: Implement get_n_rows for improved performance 2011-01-10 21:22:22 +00:00
clutter-list-model.h
clutter-main.c On error, return FALSE in the post_parse hook 2011-03-04 23:56:12 +00:00
clutter-main.h Add G_GNUC_WARN_UNUSED_RESULT to clutter_init and init_with_args 2011-02-28 14:10:05 +00:00
clutter-marshal.list event/x11: Rework the way we translate X11 events 2011-01-21 10:25:43 +00:00
clutter-master-clock.c Start using the monotonic API in GLib ≥ 2.27 2010-11-17 16:19:10 +00:00
clutter-master-clock.h
clutter-media.c Use G_DEFINE_INTERFACE 2010-10-18 11:26:44 +01:00
clutter-media.h
clutter-model-private.h
clutter-model.c model: Add support to define rows in ClutterScript 2011-01-21 20:44:17 +00:00
clutter-model.h model: Change the column argument type to gint for clutter_model_set_sort 2011-01-21 20:42:52 +00:00
clutter-offscreen-effect-private.h offscreen-effect: Add public accessor for target size 2011-02-28 14:34:36 +00:00
clutter-offscreen-effect.c clutter-offscreen-effect: Use 0,0 as the offset if no actor box 2011-03-04 17:04:02 +00:00
clutter-offscreen-effect.h offscreen-effect: Add public accessor for target size 2011-02-28 14:34:36 +00:00
clutter-page-turn-effect.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-page-turn-effect.h Appease the gods in introspection 2011-01-20 16:35:26 +00:00
clutter-paint-volume-private.h Add copyright notices 2010-10-21 13:13:00 +01:00
clutter-paint-volume.c use cogl_matrix_transform_points in clutter 2010-11-23 12:50:29 +00:00
clutter-path-constraint.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-path-constraint.h Appease the gods in introspection 2011-01-20 16:35:26 +00:00
clutter-path.c Clean up clutter-private.h/6 2010-10-21 12:22:17 +01:00
clutter-path.h
clutter-private.h Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-profile.c profile: Update to uprof-0.3 dep for --enable-profile 2010-09-14 12:43:16 +01:00
clutter-profile.h profile: Update to uprof-0.3 dep for --enable-profile 2010-09-14 12:43:16 +01:00
clutter-rectangle.c annotations: Use caller-allocates for color getters 2011-02-14 18:41:18 +00:00
clutter-rectangle.h
clutter-score.c More ISO C90 warning fixes in Clutter 2011-02-15 12:40:11 +00:00
clutter-score.h More ISO C90 warning fixes in Clutter 2011-02-15 12:40:11 +00:00
clutter-script-parser.c More ISO C90 warning fixes in Clutter 2011-02-15 12:40:11 +00:00
clutter-script-private.h script: Fix the memory management 2010-10-19 01:42:19 +01:00
clutter-script.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-script.h
clutter-scriptable.c More ISO C90 warning fixes in Clutter 2011-02-15 12:40:11 +00:00
clutter-scriptable.h More ISO C90 warning fixes in Clutter 2011-02-15 12:40:11 +00:00
clutter-settings.c Appease the gods in introspection 2011-01-20 16:35:26 +00:00
clutter-settings.h Appease the gods in introspection 2011-01-20 16:35:26 +00:00
clutter-shader-effect.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-shader-effect.h
clutter-shader-types.c shader-types: Check the size of the values 2010-06-16 17:14:57 +01:00
clutter-shader-types.h
clutter-shader.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-shader.h build: Re-arrange headers 2010-11-18 18:23:49 +00:00
clutter-snap-constraint.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-snap-constraint.h Appease the gods in introspection 2011-01-20 16:35:26 +00:00
clutter-stage-manager-private.h Add copyright notices 2010-10-21 13:13:00 +01:00
clutter-stage-manager.c Clean up clutter-private.h/2 2010-10-21 11:30:19 +01:00
clutter-stage-manager.h
clutter-stage-private.h Store the motion event deliver flag in ClutterStage 2011-02-18 19:41:41 +00:00
clutter-stage-window.c stage-window: Add ::redraw virtual function 2011-02-08 15:49:19 +00:00
clutter-stage-window.h stage-window: Add ::redraw virtual function 2011-02-08 15:49:19 +00:00
clutter-stage.c Store the motion event deliver flag in ClutterStage 2011-02-18 19:41:41 +00:00
clutter-stage.h stage: Add :accept-focus property and accessors 2010-12-30 12:44:13 +00:00
clutter-state.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-state.h Use G_DEFINE_BOXED_TYPE for all boxed types 2010-10-18 11:26:45 +01:00
clutter-table-layout.c clutter: Remove unused variables 2011-02-19 16:47:20 +00:00
clutter-table-layout.h table-layout: Invert row/column in arguments 2010-09-23 15:17:58 +01:00
clutter-text.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-text.h
clutter-texture.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-texture.h build: Re-arrange headers 2010-11-18 18:23:49 +00:00
clutter-timeline.c Remove private helper #define's 2011-03-03 11:47:49 +00:00
clutter-timeline.h ClutterTimeline: Fix the 'msecs' parameter for the new-frame signal 2011-01-24 11:52:47 +00:00
clutter-timeout-interval.c Start using the monotonic API in GLib ≥ 2.27 2010-11-17 16:19:10 +00:00
clutter-timeout-interval.h Move away from GTimeVal 2010-11-17 16:19:10 +00:00
clutter-timeout-pool.c More ISO C90 warning fixes in Clutter 2011-02-15 12:40:11 +00:00
clutter-timeout-pool.h More ISO C90 warning fixes in Clutter 2011-02-15 12:40:11 +00:00
clutter-types.h event/x11: Rework the way we translate X11 events 2011-01-21 10:25:43 +00:00
clutter-units.c docs: Documentation fixes 2010-12-09 13:59:08 +00:00
clutter-units.h introspection: Skip some C-only structures 2010-12-10 17:15:39 +00:00
clutter-util.c paint_volume: Splits out clutter_paint_volume code 2010-09-29 15:13:00 +01:00
clutter-util.h
clutter-version.h.in
clutter.h build: Generate an instealled config header 2011-01-19 14:33:27 +00:00
clutter.pc.in build: Start moving to a non-recursive layout 2010-09-29 14:40:15 +01:00
Makefile.am Move the keysym ↔ Unicode table to .rodata 2011-02-28 14:16:24 +00:00