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currentSubscene3d <- function(dev = cur3d()) {
.C(rgl_getsubsceneid, id = 1L, dev = as.integer(dev))$id
}
subsceneInfo <- function(id = NA, embeddings, recursive = FALSE) {
if (is.na(id))
id <- currentSubscene3d()
else if (is.character(id) && id == "root")
id <- .C(rgl_getsubsceneid, id = 0L, dev = as.integer(cur3d()))$id
if (!id) stop("No subscene info available.")
id <- as.integer(id)
result <- list(id = id)
parent <- .C(rgl_getsubsceneparent, id = id)$id
if (is.na(parent)) stop(gettextf("Subscene %s not found", id), domain = NA)
if (!parent) parent <- NULL
result[["parent"]] <- parent
n <- .C(rgl_getsubscenechildcount, id = id, n = integer(1))$n
if (n) {
children <- .C(rgl_getsubscenechildren, id = id, children=integer(n))$children
if (recursive) {
childlist <- list()
for (i in seq_len(n))
childlist[[i]] <- subsceneInfo(id = children[i], recursive = TRUE)
result[["children"]] <- childlist
} else
result[["children"]] <- children
}
embeddingNames <- c("inherit", "modify", "replace")
if (!missing(embeddings)) {
embeddings <- pmatch(embeddings, embeddingNames, duplicates.ok = TRUE)
if (any(is.na(embeddings)) || length(embeddings) != 4)
stop(gettextf("Four embeddings must be specified; names chosen from %s",
paste(dQuote(embeddingNames), collapse=", ")), domain = NA)
if (embeddings[4] == "modify")
stop("The mouseMode embedding cannot be 'modify'")
.C(rgl_setEmbeddings, id = id, embeddings = as.integer(embeddings))
}
embeddings <- .C(rgl_getEmbeddings, id = id, embeddings = integer(4))$embeddings
embeddings <- embeddingNames[embeddings]
names(embeddings) <- c("viewport", "projection", "model", "mouse")
result[["embeddings"]] <- embeddings
result
}
newSubscene3d <- function(viewport = "replace",
projection = "replace",
model = "replace",
mouseMode = "inherit",
parent = currentSubscene3d(),
copyLights = TRUE,
copyShapes = FALSE,
copyBBoxDeco = copyShapes,
copyBackground = FALSE,
newviewport,
ignoreExtent) {
embedding <- c("inherit", "modify", "replace")
viewport <- pmatch(viewport, embedding)
projection <- pmatch(projection, embedding)
model <- pmatch(model, embedding)
mouseMode <- pmatch(mouseMode, embedding)
if (missing(ignoreExtent))
ignoreExtent <- model == 3
stopifnot(length(viewport) == 1L, length(projection) == 1L,
length(model) == 1L, length(mouseMode) ==1L,
mouseMode != 2L,
!is.na(viewport), !is.na(projection), !is.na(model))
embedding <- c(viewport, projection, model, mouseMode)
id <- .C(rgl_newsubscene, id = integer(1), parent = as.integer(parent),
embedding = as.integer(embedding),
as.integer(ignoreExtent))$id
if (id) {
if (copyLights || copyShapes || copyBBoxDeco || copyBackground) {
useSubscene3d(parent)
ids <- ids3d(type =
c("lights", "shapes", "bboxdeco", "background")[c(copyLights, copyShapes, copyBBoxDeco, copyBackground)])$id
if (length(ids))
addToSubscene3d(ids, subscene = id)
}
useSubscene3d(id)
if (!missing(newviewport)) {
embedding <- subsceneInfo(id)$embeddings
if (embedding[1] > 1)
par3d(viewport = as.integer(newviewport))
}
} else
stop("Subscene creation failed")
lowlevel(id)
}
useSubscene3d <- function(subscene) {
result <- .C(rgl_setsubscene, id=as.integer(subscene))$id
if (!result) stop(gettextf("Subscene %d not found.", subscene), domain = NA)
invisible(result)
}
addToSubscene3d <- function(ids = tagged3d(tags), tags, subscene = currentSubscene3d()) {
ids <- as.integer(ids)
dups <- intersect(ids, ids3d("all", subscene)$id)
if (length(dups))
stop(gettextf("Cannot add %s, already present", paste(dups, collapse = ", ")), domain = NA)
result <- .C(rgl_addtosubscene, success = as.integer(subscene),
n = as.integer(length(ids)), ids = ids)$success
if (!result)
stop(gettextf("Failed to add objects to subscene %s", subscene), domain = NA)
lowlevel(subscene)
}
delFromSubscene3d <- function(ids = tagged3d(tags), tags, subscene = currentSubscene3d()) {
result <- .C(rgl_delfromsubscene, success = as.integer(subscene),
n = as.integer(length(ids)), ids = as.integer(ids))$success
if (!result)
stop(gettextf("Failed to delete objects from subscene %s", subscene), domain = NA)
lowlevel(subscene)
}
# This destroys any objects that are in the scene but
# not in either the protect vector or visible in a subscene
gc3d <- function(protect=NULL) {
protect <- as.integer(protect)
invisible( .C(rgl_gc, n = length(protect), protect)$n )
}
subsceneList <- function(value, window = cur3d()) {
alllists <- .rglEnv$subsceneLists
# This cleans up lists for closed windows:
alllists <- alllists[names(alllists) %in% rgl.dev.list()]
if (!missing(value)) {
if (is.null(alllists)) alllists <- list()
alllists[[as.character(window)]] <- value
assign("subsceneLists", alllists, envir = .rglEnv)
}
if (is.null(alllists)) return(NULL)
else return(alllists[[as.character(window)]])
}
next3d <- function(current = NA, clear = TRUE, reuse = TRUE) {
.check3d()
if (is.na(current))
current <- currentSubscene3d()
subscenes <- subsceneList()
while (!is.null(subscenes) && !(current %in% subscenes))
subscenes <- attr(subscenes, "prev")
if (is.null(subscenes))
subscenes <- current
this <- which(current == subscenes)
if (reuse && !nrow(ids3d(subscene = current))) {
# do nothing
} else if (this == length(subscenes))
this <- 1
else
this <- this + 1
repeat{
current <- subscenes[this]
result <- try(useSubscene3d(current))
if (inherits(result, "try-error")) {
subsceneList(subscenes <- subscenes[-this])
if (length(subscenes) == 0)
stop("'subsceneList()' contained no valid subscenes")
if (this > length(subscenes)) this <- 1
} else break
}
if (clear)
clear3d(subscene = current)
}
clearSubsceneList <- function(delete = currentSubscene3d() %in% subsceneList(),
window = cur3d()) {
if (!missing(window))
set3d(window)
thelist <- subsceneList()
if (delete && length(thelist)) {
parent <- subsceneInfo(thelist[1])$parent
if (is.null(parent))
parent <- rootSubscene()
pop3d(type="subscene", id=thelist)
useSubscene3d(parent)
gc3d()
}
subsceneList(attr(thelist, "prev"))
invisible(currentSubscene3d())
}
mfrow3d <- function(nr, nc, byrow = TRUE, parent = NA, sharedMouse = FALSE,
...) {
stopifnot(nr >= 1, nc >= 1)
.check3d()
if (missing(parent))
clearSubsceneList()
if (is.na(parent))
parent <- currentSubscene3d()
useSubscene3d(parent)
result <- integer(nr*nc)
parentvp <- par3d("viewport")
if (byrow)
for (i in seq_len(nr))
for (j in seq_len(nc)) {
newvp <- c(parentvp[1] + (j - 1)*parentvp[3]/nc,
parentvp[2] + (nr - i)*parentvp[4]/nr,
parentvp[3]/nc, parentvp[4]/nr)
result[(i-1)*nc + j] <- newSubscene3d(newviewport = newvp, parent = parent, ...)
}
else
for (j in seq_len(nc))
for (i in seq_len(nr)) {
newvp <- c(parentvp[1] + (j - 1)*parentvp[3]/nc,
parentvp[2] + (nr - i)*parentvp[4]/nr,
parentvp[3]/nc, parentvp[4]/nr)
result[(j-1)*nr + i] <- newSubscene3d(newviewport = newvp, parent = parent, ...)
}
if (sharedMouse)
for (sub in result)
par3d(listeners = result, subscene = sub)
useSubscene3d(result[1])
attr(result, "prev") <- subsceneList()
subsceneList(result)
invisible(result)
}
layout3d <- function(mat, widths = rep.int(1, ncol(mat)),
heights = rep.int(1, nrow(mat)),
parent = NA, sharedMouse = FALSE,
...) {
storage.mode(mat) <- "integer"
mat <- as.matrix(mat)
num.figures <- max(mat)
if (!all(seq_len(num.figures) %in% as.integer(mat)))
stop(gettextf("Layout matrix must contain at least one reference\nto each of the values {1 ... %d}\n",
num.figures), domain = NA)
.check3d()
if (missing(parent))
clearSubsceneList()
if (is.na(parent))
parent <- currentSubscene3d()
useSubscene3d(parent)
parentvp <- par3d("viewport")
widths <- parentvp["width"]*widths/sum(widths)
heights <- parentvp["height"]*heights/sum(heights)
xs <- c(0, cumsum(widths))
ys <- rev(c(0, cumsum(rev(heights))))[-1]
result <- integer(num.figures)
for (i in seq_len(num.figures)) {
rows <- range(row(mat)[mat == i])
cols <- range(col(mat)[mat == i])
newvp <- c(xs[cols[1]], ys[rows[2]], sum(widths[cols[1]:cols[2]]), sum(heights[rows[1]:rows[2]]))
result[i] <- newSubscene3d(newviewport = newvp, parent = parent, ...)
}
if (sharedMouse)
for (sub in result)
par3d(listeners = result, subscene = sub)
useSubscene3d(result[1])
attr(result, "prev") <- subsceneList()
subsceneList(result)
invisible(result)
}
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