* [FEATURE] Static particle traces for rendering mesh vector dataset
This PR permits to display directly in QGIS static particle traces for vector datasets in mesh layer without any plugin.
The user can choose in the mesh layer properties window :
- the color
- the size of the traces (line width)
- the count of particles
- the maximum length of the particle's tail
* [FEATURE] API for rendering frames for mesh vector dataset animation (particles)
Adds a renderer to generate frames that represent particle traces in a vector field of a mesh layer. The renderer cannot be chosen in the current GUI, however crayfish plugin can use API to generate avi/gif files with nice animations representing the movement of (random) particles in the mesh layer vector field.
placement rules should be followed when solving the pal labeling engine
solution.
For new projects it defaults to version 2, but when loading an older project
version 1 is used.
This allows changes to be made to the label placement problem solving without
affecting the placement of labels in existing projects.
* [FEATURE] Mesh streamlines
fix#29534
The vector field data set in a mesh layer can currently be only rendered with arrows. This PR adds a new feature to render vector field in mesh layers with streamlines.
The streamlines are seeded from start points. The seeding points can start from the vertices of the mesh, from a used grid or randomly. Streamlines could be coloured or width can be selected.
comparisons to be made when resolving primary keys in the Oracle and
Postgres providers
qt's built in qMapLessThanKey for QVariantList is broken and does a
case-insensitive operation, so we replace it with a working version instead...
We now buffer the request for the input to a resample filter by
a variable number of pixels (depending on the resampling type)
in order to fetch the neighbouring pixels to the edges of individual
raster blocks. This allows the resampling to utilise these
neighbouring pixels when resampling the edges of tiles, avoiding
discrepancies and rendering artifacts over the borders of
raster tiles.
Fixes#30152
always avoid using temporary file names, and then set this option as
enabled by default.
Also change the setting key so that existing users will also get the new
default value.
Fixes#32591
* [FEATURE] Selective masking
Advanced rendering feature that allows the definition of 'masks' areas around labels or with a new typ of symbol layer. These masks will "un-draw" symbol layers of other layers underneath.
It modifies the rendering process by adding an optional second pass.
