select3d {rgl} | R Documentation |
This function allows the user to use the mouse to select a region in an RGL scene.
rgl.select3d(button = c("left", "middle", "right"), dev = rgl.cur(), subscene = currentSubscene3d(dev)) select3d(...)
button |
Which button to use for selection. |
dev, subscene |
The rgl device and subscene to work with |
... |
Button argument to pass to |
This function selects 3-dimensional regions by allowing the user to use a mouse to draw a rectangle showing the projection of the region onto the screen. It returns a function which tests points for inclusion in the selected region.
If the scene is later moved or rotated, the selected region will remain the same, no longer corresponding to a rectangle on the screen.
Returns a function f(x, y, z)
which tests whether each
of the points (x, y, z)
is in the selected region, returning
a logical vector. This function accepts input in a wide
variety of formats as it uses xyz.coords
to interpret its parameters.
Ming Chen / Duncan Murdoch
# Allow the user to select some points, and then redraw them # in a different color if (interactive()) { x <- rnorm(1000) y <- rnorm(1000) z <- rnorm(1000) open3d() points3d(x, y, z) f <- select3d() if (!is.null(f)) { keep <- f(x, y, z) rgl.pop() points3d(x[keep], y[keep], z[keep], color = 'red') points3d(x[!keep], y[!keep], z[!keep]) } }