Prepares an sf object and transition list for parent-to-child leaf-flip
bloom in drag_map_prototype().
Usage
build_branch_transition_data(
x,
parent_col,
child_col,
expanded = NULL,
dissolve = TRUE,
max_child_groups = 600L,
animation = c("branch_bloom", "leaf_flip"),
duration_ms = 375,
easing = c("cubic-out", "cubic-in-out", "linear"),
show_parent_ghost = FALSE,
parent_ghost_opacity = 0.18,
leaf_flip_strength = 0.16,
leaf_child_scale = 0.86,
leaf_expand_duration_factor = 0.82,
leaf_collapse_duration_factor = 0.58,
boundary = TRUE,
boundary_behavior = c("drag", "none"),
boundary_drag_threshold = 8,
boundary_label = "Drag to",
parent_key_col = "..dragmapr_parent_key..",
child_key_col = "..dragmapr_child_key..",
shell_col = "..dragmapr_parent_shell.."
)Arguments
- x
An
sfobject.- parent_col
Parent grouping column.
- child_col
Child grouping column.
- expanded
Optional parent values to start expanded.
- dissolve
Add dissolved parent shell features for collapsed parents.
- max_child_groups
Maximum number of child groups allowed.
- animation
Animation style. Use
"branch_bloom"for the clean group bloom or"leaf_flip"for the temporary leaf-proxy flip.- duration_ms
Animation duration in milliseconds.
- easing
Animation easing name.
- show_parent_ghost
Logical. Show a faint parent shell while expanded.
- parent_ghost_opacity
Parent ghost opacity when shown.
- leaf_flip_strength
Leaf proxy rotation strength.
- leaf_child_scale
Starting scale for child polygons in leaf mode.
- leaf_expand_duration_factor
Leaf expand speed multiplier.
- leaf_collapse_duration_factor
Leaf collapse speed multiplier.
- boundary
Logical. Add a dotted drag boundary for expanded groups.
- boundary_behavior
Boundary mode. Use
"drag"or"none".- boundary_drag_threshold
Pixel threshold before a boundary drag counts.
- boundary_label
Text prefix for the dotted drag boundary.
- parent_key_col, child_key_col, shell_col
Internal column names to add.