This is similar to what is achieved in
`QgsRasterLayer::refreshRendererIfNeeded()` to check if the renderer
needs to be refresh according to an extent. It does not perform any
refresh.
It is not used at the moment. This will replace the logic to refresh a
renderer in the following commits.
These classes are supposed to store the original setting values,
so doubles are more appropriate as they won't slightly change
eg when round-tripping through qgis project XML.
(The actual 3d material classes still use floats, this is just
for the settings classes)
This introduces a new class QgsGeoTransform (derived from QTransform)
that keeps chunk's translation vector as a QgsVector3D (i.e. in double
coordinates) and if there is a shift of the origin, 3D map scene and
chunk entities react to it by adjusting the underlying QTransform.
This commit adds support for the CSS ``background-color`` and
``background-image`` properties when used with HTML labels.
- Backgrounds are supported for block items (eg ``<div>``) or inline
items (eg ``<span>``)
- For images, the CSS should be formatted as ``background-image: url(xx)``.
It supports local file paths, http links, or base64 embedded content
- Backgrounds are not supported for curved text
- HTML backgrounds are always rendered above any background shape for
the label, and below drop shadows/buffers
Sponsored by City of Freiburg im Breisgau
The number of available clip planes depends on the OpenGL
implementation.
This change Introduces a new function in Qgs3DUtils function called
`Qgs3DUtils::getOpenGLMaxClipPlanes` to compute this
number (`GL_MAX_CLIP_PLANES`) and use it in the 3D scene.
See: https://registry.khronos.org/OpenGL-Refpages/gl2.1/xhtml/glClipPlane.xml
Only create rules/categorized categories/graduated ranges if the
associated symbol could be converted to SLD, and is not an "empty"
symbol.
Otherwise we do not generate a rule, as SLD spec requires a
Symbolizer element to be present.
The old method was very inefficient, as it required a re-load and
re-parse of the associated SVG file content with every clone, only
for many of the parsed properties to be immediately overwritten.
Optimise by just directly copying members, avoiding all unnecessary
work.
This is frequently seen as a hotspot when profiling map renders,
as that involves cloning all symbol layers upfront.
Speeds up a benchtest cloning 100k markers from 4.3 seconds to
150ms.
Rework internals of QgsTextRenderer horizontal text rendering,
so that:
1. It's easier to read, cleaning up years of accumulated cruft
2. Split out bits into smaller functions
3. Reduce the amount of duplicate code for text layout, so that
there's only one function responsible for horizontal text layout
instead of multiple
4. Add shortcut optimisations for rendering text + buffer/shadow
at the same time, instead of always drawing these completely
independantly of each other and incurring the cost of text path
calculation multiple times for the same bit of text. In a simple
benchtest this reduces the time required for rendering many
text fragments with buffers from 40 seconds to 27 seconds.
There's still more we could do here, but it's a start...
