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MapStructure Optimizations: Difference between revisions
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→Allocating selectable ranges into groups
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Now, on the devel list, Stuart mentioned already the difference between range and screen-range. However, there's actually more to it. Two more ranges: | Now, on the devel list, Stuart mentioned already the difference between range and screen-range. However, there's actually more to it. Two more ranges: | ||
* selectable ranges | * selectable ranges (knobs) | ||
* visible | * visible range (possibly constrained by a FOV,i.e. two bearing lines) | ||
What this means is that we can be much smarter, and much more efficient, when updating the map - because we don't need to remove symbols, we may only need to "hide" them - because they may not be visible in the currently selected range, but they may be visible if one of the other selectable ranges is chosen. | What this means is that we can be much smarter, and much more efficient, when updating the map - because we don't need to remove symbols, we may only need to "hide" them - because they may not be visible in the currently selected range, but they may be visible if one of the other selectable ranges is chosen. | ||