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subst <- function(strings, ..., digits=7) {
substitutions <- list(...)
names <- names(substitutions)
if (is.null(names)) names <- rep("", length(substitutions))
for (i in seq_along(names)) {
if ((n <- names[i]) == "")
n <- as.character(sys.call()[[i+2]])
value <- substitutions[[i]]
if (is.numeric(value))
value <- formatC(unclass(value), digits=digits, width=1)
strings <- gsub(paste("%", n, "%", sep=""), value, strings)
}
strings
}
convertBBox <- function(id,
verts = rgl.attrib(id, "vertices"),
text = rgl.attrib(id, "text"),
mat = rgl.getmaterial(id = id)) {
if (!length(text))
text <- rep("", NROW(verts))
if (length(mat$color) > 1)
mat$color <- mat$color[2] # We ignore the "box" colour
if(any(missing <- text == ""))
text[missing] <- apply(verts[missing,], 1, function(row) format(row[!is.na(row)]))
res <- integer(0)
if (any(inds <- is.na(verts[,2]) & is.na(verts[,3])))
res <- c(res, do.call(axis3d, c(list(edge = "x", at = verts[inds, 1], labels = text[inds]), mat)))
if (any(inds <- is.na(verts[,1]) & is.na(verts[,3])))
res <- c(res, do.call(axis3d, c(list(edge = "y", at = verts[inds, 2], labels = text[inds]), mat)))
if (any(inds <- is.na(verts[,1]) & is.na(verts[,2])))
res <- c(res, do.call(axis3d, c(list(edge = "z", at = verts[inds, 3], labels = text[inds]), mat)))
res <- c(res, do.call(box3d, mat))
res
}
rootSubscene <- function() {
id <- currentSubscene3d()
repeat {
info <- subsceneInfo(id)
if (is.null(info$parent)) return(id)
else id <- info$parent
}
}
writeWebGL <- function(dir="webGL", filename=file.path(dir, "index.html"),
template = system.file(file.path("WebGL", "template.html"), package = "rgl"),
prefix = "",
snapshot = TRUE, commonParts = TRUE, reuse = NULL,
font="Arial",
width = NULL, height = NULL) {
.Deprecated("rglwidget")
# Lots of utility functions and constants defined first; execution starts way down there...
header <- function()
if (commonParts)
c(
as.character(includeScript(system.file("htmlwidgets/lib/CanvasMatrix/CanvasMatrix.src.js", package = "rgl"))),
as.character(includeScript(system.file("htmlwidgets/lib/rglClass/rglClass.src.js", package = "rgl")))
)
scriptheader <- function() subst(
'
<div id="%elementId%" class="rglWebGL"></div>
<script type="text/javascript">
var %prefix%div = document.getElementById("%elementId%"),
%prefix%rgl = new rglwidgetClass();
%prefix%div.width = %width%;
%prefix%div.height = %height%;
%prefix%rgl.initialize(%prefix%div,
%json%);
%prefix%rgl.prefix = "%prefix%";
</script>', prefix, elementId, json, width, height)
footer <- function() subst('
<p id="%prefix%debug">
You must enable Javascript to view this page properly.</p>',
prefix)
# Execution starts here!
# Do a few checks first
elementId <- paste0(prefix, "div")
if (!file.exists(dir))
dir.create(dir)
if (!file.info(dir)$isdir)
stop(gettextf("'%s' is not a directory", dir), domain = NA)
if (!is.null(template)) {
templatelines <- readLines(template)
templatelines <- subst(templatelines, rglVersion = packageVersion("rgl"), prefix = prefix)
target <- paste("%", prefix, "WebGL%", sep="")
replace <- grep( target, templatelines, fixed=TRUE)
if (length(replace) != 1)
stop(gettextf("template '%s' does not contain '%s'", template, target),
domain = NA)
result <- c(templatelines[seq_len(replace-1)], header())
} else
result <- header()
scene <- convertScene(width = width, height = height,
elementId = elementId,
snapshot = snapshot)
scene$crosstalk <- list(key = list(),
group = character(),
id = integer(),
options = list())
if (is.null(width)) width <- scene$width
if (is.null(height)) height <- scene$height
json <- toJSON(I(scene),
dataframe = "columns", null = "null", na = "string",
auto_unbox = TRUE, digits = getOption("shiny.json.digits",
7),
use_signif = TRUE, force = TRUE, POSIXt = "ISO8601",
UTC = TRUE, rownames = FALSE, keep_vec_names = TRUE)
result <- c(result,
scriptheader(),
footer(),
if (!is.null(template))
templatelines[replace + seq_len(length(templatelines)-replace)]
else
subst("<script>%prefix%rgl.start();</script>", prefix = prefix)
)
cat(result, file=filename, sep="\n")
invisible(filename)
}
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