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r3d.rgl.R
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r3d.rgl.R
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#
# R3D rendering functions - rgl implementation
#
# Node Management
getr3dDefaults <- function(class = NULL, value = NULL) {
result <- r3dDefaults
if (exists("r3dDefaults", envir = globalenv())) {
user <- get("r3dDefaults", envir=.GlobalEnv)
for (n in names(user)) {
if (is.list(result[[n]]))
result[[n]][names(user[[n]])] <- user[[n]]
else
result[[n]] <- user[[n]]
}
}
if (!is.null(class))
result <- result[[class]]
if (!is.null(result) && !is.null(value))
result <- result[[value]]
result
}
clear3d <- function(type = c("shapes", "bboxdeco", "material"),
defaults=getr3dDefaults(),
subscene = 0) {
.check3d()
if (is.na(subscene))
subscene <- currentSubscene3d()
typeid0 <- rgl.enum.nodetype(type)
userviewpoint <- 4 %in% typeid0
material <- 5 %in% typeid0
modelviewpoint <- 8 %in% typeid0
drop <- typeid0 %in% c(4:5, 8)
typeid <- typeid0[!drop]
type <- names(typeid)
if (subscene == 0) {
idata <- as.integer(c(length(typeid), typeid))
ret <- .C( rgl_clear,
success = FALSE,
idata
)$success
if (! ret)
stop("'rgl_clear' failed")
} else {
sceneids <- ids3d(type=type, subscene = 0)$id
thisids <- ids3d(type=type, subscene = subscene)$id
if (length(thisids)) {
delFromSubscene3d(ids = thisids, subscene = subscene)
gc3d(protect = setdiff(sceneids, thisids))
}
}
if ( userviewpoint || modelviewpoint)
view3d(type = c("userviewpoint", "modelviewpoint")[c(userviewpoint, modelviewpoint)])
if ( material )
rgl.material0()
if ( 4 %in% typeid0 ) { # userviewpoint
do.call("par3d", defaults["FOV"])
}
if ( 8 %in% typeid0 ) { # modelviewpoint
do.call("par3d", defaults["userMatrix"])
}
if ( 5 %in% typeid0 ) { # material
if (length(defaults$material))
do.call("material3d", defaults$material)
}
if ( 6 %in% typeid0 ) { # background
do.call("bg3d", as.list(defaults$bg))
}
lowlevel()
}
# Environment
rgl.material.names <- c("color", "alpha", "lit", "ambient", "specular",
"emission", "shininess", "smooth", "front", "back", "size",
"lwd", "fog", "point_antialias", "line_antialias",
"texture", "textype", "texmode", "texmipmap",
"texminfilter", "texmagfilter", "texenvmap",
"depth_mask", "depth_test", "isTransparent",
"polygon_offset", "margin", "floating", "tag",
"blend")
rgl.material.readonly <- "isTransparent"
# Warn about putting a texture on a black surface, but only
# if the surface is black because that's the default.
warnBlackTexture <- function(...,
defaults = material3d(),
color = col, col = "missing",
texture = NULL,
texmode = defaults$texmode) {
if (!is.null(texture) &&
length(color) == 1 &&
color == "missing" &&
texmode == "modulate" &&
getOption("rgl.warnBlackTexture", TRUE) &&
length(defaults$color) &&
defaults$color[1] %in% c("#000000", "black")) {
warning("Texture will be invisible on black surface", call. = FALSE)
}
}
# This function expands a list of arguments by putting
# all entries from Params (i.e. the current settings by default)
# in place for any entries that are not listed.
# Unrecognized args are left in place.
.fixMaterialArgs <- function(..., Params = material3d(), col) {
warnBlackTexture(...,
col = if (missing(col)) "missing" else col,
defaults = Params)
f <- function(...) list(...)
dots <- list(...)
if (!missing(col))
Params$color <- col
formals(f) <- c(Params, formals(f))
names <- as.list(names(Params))
names(names) <- names
names <- lapply(names, as.name)
b <- as.list(body(f))
body(f) <- as.call(c(b[1], names, b[-1]))
f(...)
}
# This one just expands the argument names to match the
# standard names
.fixMaterialArgs2 <- function(..., col) {
call <- do.call(call, list("rgl.material0", ...))
result <- as.list(match.call(rgl.material0, call))[-1]
if (!missing(col) && is.null(result$color))
result$color <- col
result
}
# This one just gets the material args
# If warn is TRUE, give a warning instead of ignoring extras.
.getMaterialArgs <- function(..., material = list(), warn = FALSE, col = material[["col"]]) {
fullyNamed <- as.list(match.call(rgl.material0,
as.call(c(list(as.name("rgl.material0"),
...), material))))[-1]
if (!is.null(col) && !("color" %in% names(fullyNamed)))
fullyNamed$color <- col
good <- names(fullyNamed) %in% rgl.material.names
if (warn && !all(good))
warning("Argument(s) ", paste(names(fullyNamed)[!good], collapse = ", "), " not matched.")
fullyNamed[good]
}
material3d <- function(..., id = NULL) {
args <- list(...)
argnames <- names(args)
if (length(argnames) && !is.null(id))
stop("Material properties cannot be set on existing objects.")
if (length(id) > 1)
stop("Material properties may only be queried for single objects.")
argnames <- setdiff(argnames, rgl.material.readonly)
if (!length(args))
argnames <- rgl.material.names
else {
if (is.null(names(args)) && all(unlist(lapply(args, is.character)))) {
argnames <- unlist(args)
args <- NULL
}
if (length(args) == 1) {
if (is.list(args[[1]]) | is.null(args[[1]])) {
args <- args[[1]]
argnames <- names(args)
}
}
}
value <- rgl.getmaterial(id = id)[argnames]
if (length(args)) {
save <- options(rgl.warnBlackTexture = FALSE)
on.exit(options(save))
args <- do.call(".fixMaterialArgs", args)
do.call("rgl.material0", args)
return(invisible(value))
} else if (length(argnames) == 1) return(value[[1]])
else return(value)
}
bg3d <- function(color,
sphere=FALSE,
back="lines",
fogtype="none",
fogScale = 1,
col, ... ) {
.check3d(); save <- material3d(); on.exit(material3d(save))
bgid <- ids3d("background")$id
if (length(bgid) && nrow(flags <- rgl.attrib(bgid[1], "flags"))) {
if (missing(sphere))
sphere <- flags["sphere", 1]
if (missing(fogtype))
fogtype <- if (flags["linear_fog", 1]) "linear"
else if (flags["exp_fog", 1]) "exp"
else if (flags["exp2_fog", 1]) "exp2"
else "none"
}
dots <- list(...)
if (!missing(color)) {
dots$color <- color
if (!missing(col))
warning("'color' specified, so 'col' is ignored.")
} else if (!missing(col))
dots$color <- col
if ("fogtype" %in% names(dots))
fogtype <- dots$fogtype
if ("fogScale" %in% names(dots))
fogScale <- dots$fogScale
else
fogScale <- 1
if ("color" %in% names(dots))
color <- dots$color
else if ("col" %in% names(dots))
color <- dots$col
else
color <- getr3dDefaults("bg", "color")
if (is.null(color))
color <- "white"
new <- .fixMaterialArgs(sphere = sphere,
fogtype = fogtype,
fogScale = fogScale,
color = color,
back = back, lit = FALSE, Params = save)
do.call("rgl.material0", .fixMaterialArgs(..., Params = new))
fogtype <- rgl.enum.fogtype(fogtype)
idata <- as.integer(c(sphere,fogtype))
fogScale <- as.numeric(fogScale)
stopifnot(length(fogScale) == 1, fogScale > 0)
ret <- .C( rgl_bg,
success = as.integer(FALSE),
idata,
fogScale
)
if (! ret$success)
stop("'rgl_bg' failed")
lowlevel(ret$success)
}
light3d <- function(theta=0, phi=15,
x=NULL, y = NULL, z = NULL,
viewpoint.rel = TRUE,
ambient = "#FFFFFF",
diffuse = "#FFFFFF",
specular = "#FFFFFF") {
.check3d()
ambient <- rgl.color(ambient)
diffuse <- rgl.color(diffuse)
specular <- rgl.color(specular)
# if a complete set of x, y, z is given, the light source is assumed to be part of the scene, theta and phi are ignored
# else the light source is infinitely far away and its direction is determined by theta, phi (default)
if ( !is.null(x) ) {
if ( !missing(theta) || !missing(phi) )
warning("'theta' and 'phi' ignored when 'x' is present")
xyz <- xyz.coords(x,y,z, recycle = TRUE)
x <- xyz$x
y <- xyz$y
z <- xyz$z
if (length(x) > 1) stop("A light can only be in one place at a time")
finite.pos <- TRUE
}
else {
if ( !is.null(y) || !is.null(z) )
warning("'y' and 'z' ignored, 'theta' and 'phi' used")
finite.pos <- FALSE
x <- 0
y <- 0
z <- 0
}
idata <- as.integer(c(viewpoint.rel, ambient, diffuse, specular, finite.pos))
ddata <- as.numeric(c(theta, phi, x, y, z))
ret <- .C( rgl_light,
success = as.integer(FALSE),
idata,
ddata
)
if (! ret$success)
stop("Error in 'rgl_light'. Too many lights? maximum is 8 sources per scene")
lowlevel(ret$success)
}
view3d <- function(theta = 0.0, phi = 15.0,
fov = 60.0, zoom = 1.0, scale = par3d("scale"),
interactive = TRUE, userMatrix,
type = c("userviewpoint", "modelviewpoint")) {
.check3d()
zoom <- rgl.clamp(zoom,0,Inf)
phi <- rgl.clamp(phi,-90,90)
fov <- rgl.clamp(fov,0,179)
type <- match.arg(type, several.ok = TRUE)
polar <- missing(userMatrix)
if (polar) userMatrix <- diag(4)
idata <- as.integer(c(interactive,polar, "userviewpoint" %in% type, "modelviewpoint" %in% type))
ddata <- as.numeric(c(theta,phi,fov,zoom,scale,userMatrix[1:16]))
ret <- .C( rgl_viewpoint,
success = FALSE,
idata,
ddata
)
if (! ret$success)
stop("'rgl_viewpoint' failed")
lowlevel()
}
bbox3d <- function(xat = NULL,
yat = NULL,
zat = NULL,
xunit = "pretty",
yunit = "pretty",
zunit = "pretty",
expand = 1.03, draw_front = FALSE,
xlab=NULL, ylab=NULL, zlab=NULL,
xlen=5, ylen=5, zlen=5,
marklen=15.0, marklen.rel=TRUE,
...) {
.check3d(); save <- material3d(); on.exit(material3d(save))
# Force evaluation of args as in old bbox3d
list(xat=xat, yat=yat, zat=zat,
xunit=xunit, yunit=yunit, zunit=zunit, expand=expand,
draw_front=draw_front)
do.call(rgl.material0, .fixMaterialArgs(..., Params = save))
if (is.null(xat))
xlab <- NULL
else {
xlen <- length(xat)
if (is.null(xlab))
xlab <- format(xat)
else
xlab <- rep(xlab, length.out=xlen)
}
if (is.null(yat))
ylab <- NULL
else {
ylen <- length(yat)
if (is.null(ylab))
ylab <- format(yat)
else
ylab <- rep(ylab, length.out=ylen)
}
if (is.null(zat))
zlab <- NULL
else {
zlen <- length(zat)
if (is.null(zlab))
zlab <- format(zat)
else
zlab <- rep(zlab,length.out=length(zat))
}
xticks <- length(xat)
yticks <- length(yat)
zticks <- length(zat)
if (identical(xunit, "pretty")) xunit <- -1
if (identical(yunit, "pretty")) yunit <- -1
if (identical(zunit, "pretty")) zunit <- -1
length(xlen) <- 1
length(ylen) <- 1
length(zlen) <- 1
length(marklen.rel) <- 1
length(draw_front) <- 1
length(xunit) <- 1
length(yunit) <- 1
length(zunit) <- 1
length(marklen) <- 1
length(expand) <- 1
idata <- as.integer(c(xticks,yticks,zticks, xlen, ylen, zlen, marklen.rel, draw_front))
ddata <- as.numeric(c(xunit, yunit, zunit, marklen, expand))
ret <- .C( rgl_bbox,
success = as.integer(FALSE),
idata,
ddata,
as.numeric(xat),
as.character(xlab),
as.numeric(yat),
as.character(ylab),
as.numeric(zat),
as.character(zlab)
)
if (! ret$success)
stop("'rgl_bbox' failed")
lowlevel(ret$success)
}
dummyBbox <- function()
bbox3d(xat = numeric(), yat = numeric(), zat = numeric(),
front = "cull", back = "cull")
observer3d <- function(x, y=NULL, z=NULL, auto=FALSE) {
if (missing(x))
location <- c(NA, NA, NA)
else {
xyz <- xyz.coords(x,y,z, recycle = TRUE)
location <- c(xyz$x, xyz$y, xyz$z)
if (length(location) != 3) stop("A single point must be specified for the observer location")
}
prev <- .C(rgl_getObserver, success=integer(1), ddata=numeric(3), NAOK = TRUE)$ddata
.C(rgl_setObserver, success=as.integer(auto), ddata=as.numeric(location), NAOK = TRUE)
lowlevel(prev)
}
# Shapes
points3d <- function(x,y=NULL,z=NULL,...) {
.check3d(); save <- material3d(); on.exit(material3d(save))
do.call("rgl.primitive0", c(list(type = "points", x=x,y=y,z=z), .fixMaterialArgs(..., Params = save)))
}
lines3d <- function(x,y=NULL,z=NULL,...) {
.check3d(); save <- material3d(); on.exit(material3d(save))
do.call("rgl.primitive0", c(list(type = "linestrips", x=x,y=y,z=z), .fixMaterialArgs(..., Params = save)))
}
segments3d <- function(x,y=NULL,z=NULL,...) {
.check3d(); save <- material3d(); on.exit(material3d(save))
do.call("rgl.primitive0", c(list(type = "lines", x=x,y=y,z=z), .fixMaterialArgs(..., Params = save)))
}
triangles3d <- function(x,y=NULL,z=NULL,...) {
.check3d(); save <- material3d(); on.exit(material3d(save))
do.call("rgl.primitive0", c(list(type = "triangles", x=x, y=y, z=z),
.fixMaterialArgs(..., Params = save)))
}
quads3d <- function(x,y=NULL,z=NULL,...) {
.check3d(); save <- material3d(); on.exit(material3d(save))
do.call("rgl.primitive0", c(list(type = "quadrangles", x=x,y=y,z=z), .fixMaterialArgs(..., Params = save)))
}
text3d <- function(x, y = NULL, z = NULL,
texts, adj = 0.5, pos = NULL, offset = 0.5,
usePlotmath = is.language(texts),
family = par3d("family"), font = par3d("font"),
cex = par3d("cex"), useFreeType = par3d("useFreeType"),
...) {
if (usePlotmath)
return(plotmath3d(x = x, y = y, z = z, text = texts, adj = adj,
pos = pos, offset = offset, ...))
.check3d(); save <- material3d(); on.exit(material3d(save))
do.call("rgl.material0", .fixMaterialArgs(..., Params = save))
# Force evaluation
list(x = x, y = y, z = z, text = texts,
adj = adj, pos = pos,
offset = offset)
vertex <- rgl.vertex(x,y,z)
nvertex <- rgl.nvertex(vertex)
if (!is.null(pos)) {
npos <- length(pos)
stopifnot(all(pos %in% 0:6))
stopifnot(length(offset) == 1)
adj <- offset
} else {
pos <- 0
npos <- 1
}
if (length(adj) > 3) warning("Only the first three entries of 'adj' are used")
adj <- c(adj, 0.5, 0.5, 0.5)[1:3]
if (!length(texts)) {
if (nvertex)
warning("No text to plot")
return(invisible(integer(0)))
}
if (nvertex) {
texts <- rep(texts, length.out=nvertex)
idata <- as.integer(nvertex)
nfonts <- max(length(family), length(font), length(cex))
family <- rep(family, length.out = nfonts)
font <- rep(font, length.out = nfonts)
cex <- rep(cex, length.out = nfonts)
family[font == 5] <- "symbol"
font <- ifelse( font < 0 | font > 4, 1, font)
ret <- .C( rgl_texts,
success = as.integer(FALSE),
idata,
as.double(adj),
as.character(texts),
as.numeric(vertex),
as.integer(nfonts),
as.character(family),
as.integer(font),
as.numeric(cex),
as.integer(useFreeType),
as.integer(npos),
as.integer(pos),
NAOK=TRUE
)
if (! ret$success)
stop("'rgl_texts' failed")
lowlevel(ret$success)
}
}
texts3d <- text3d
spheres3d <- function(x, y = NULL, z = NULL, radius = 1, fastTransparency = TRUE, ...) {
.check3d(); save <- material3d(); on.exit(material3d(save))
# Force evaluation of args
list(x = x, y = y, z = z, radius = radius, fastTransparency = fastTransparency)
do.call("rgl.material0", .fixMaterialArgs(..., Params = save))
vertex <- rgl.vertex(x,y,z)
nvertex <- rgl.nvertex(vertex)
radius <- rgl.attr(radius, nvertex)
nradius <- length(radius)
if (nvertex && nradius) {
idata <- as.integer( c( nvertex, nradius ) )
ret <- .C( rgl_spheres,
success = as.integer(FALSE),
idata,
as.numeric(vertex),
as.numeric(radius),
as.integer(fastTransparency),
NAOK=TRUE
)
if (! ret$success)
stop("'rgl_spheres' failed")
lowlevel(ret$success)
}
}
planes3d <- function(a,b=NULL,c=NULL,d=0,...) {
.check3d(); save <- material3d(); on.exit(material3d(save))
# Force evaluation of args
list(a=a,b=b,c=c,d=d)
do.call("rgl.material0", .fixMaterialArgs(..., Params = save))
normals <- rgl.vertex(a, b, c)
nnormals <- rgl.nvertex(normals)
noffsets <- length(d)
if (nnormals && noffsets) {
idata <- as.integer( c( nnormals, noffsets ) )
ret <- .C( rgl_planes,
success = as.integer(FALSE),
idata,
as.numeric(normals),
as.numeric(d),
NAOK=TRUE
)
if (! ret$success)
stop("'rgl_planes' failed")
lowlevel(ret$success)
}
}
clipplanes3d <- function(a,b=NULL,c=NULL,d=0) {
.check3d()
normals <- rgl.vertex(a, b, c)
nnormals <- rgl.nvertex(normals)
noffsets <- length(d)
if (nnormals && noffsets) {
idata <- as.integer( c( nnormals, noffsets ) )
ret <- .C( rgl_clipplanes,
success = as.integer(FALSE),
idata,
as.numeric(normals),
as.numeric(d),
NAOK=TRUE
)
if (! ret$success)
stop("'rgl_clipplanes' failed")
lowlevel(ret$success)
}
}
abclines3d <- function(x,y=NULL,z=NULL,a,b=NULL,c=NULL,...) {
.check3d(); save <- material3d(); on.exit(material3d(save))
# Force evaluation of args
list(x=x,y=y,z=z,a=a,b=b,c=c)
do.call("rgl.material0", .fixMaterialArgs(..., Params = save))
bases <- rgl.vertex(x, y, z)
nbases <- rgl.nvertex(bases)
directions <- rgl.vertex(a, b, c)
ndirs <- rgl.nvertex(directions)
if (nbases && ndirs) {
idata <- as.integer( c( nbases, ndirs ) )
ret <- .C( rgl_abclines,
success = as.integer(FALSE),
idata,
as.numeric(bases),
as.numeric(directions),
NAOK=TRUE
)
if (! ret$success)
stop("'rgl_abclines' failed")
lowlevel(ret$success)
}
}
sprites3d <- function(x, y = NULL, z = NULL, radius = 1,
shapes = NULL, userMatrix, fixedSize = FALSE,
adj = 0.5, pos = NULL, offset = 0.25,
rotating = FALSE,
...) {
.check3d(); save <- material3d(); on.exit(material3d(save))
do.call("rgl.material0", .fixMaterialArgs(..., Params = save))
if (missing(userMatrix)) {
userMatrix <- getr3dDefaults()$userMatrix
if (is.null(userMatrix)) userMatrix <- diag(4)
}
savepar <- par3d(skipRedraw=TRUE, ignoreExtent=TRUE)
on.exit(par3d(savepar), add=TRUE)
force(shapes)
par3d(ignoreExtent=savepar$ignoreExtent)
# Force evaluation of args
list(x=x,y=y,z=z,radius=radius,shapes=shapes,
userMatrix=userMatrix, fixedSize = fixedSize,
rotating = rotating,
adj = adj, pos = pos, offset = offset)
center <- rgl.vertex(x,y,z)
ncenter <- rgl.nvertex(center)
radius <- rgl.attr(radius, ncenter)
nradius <- length(radius)
pos <- as.integer(pos)
npos <- length(pos)
if (npos) {
pos <- rep(pos, length.out = ncenter)
adj <- offset
}
adj <- c(adj, 0.5, 0.5, 0.5)[1:3]
if (ncenter && nradius) {
if (length(shapes) && length(userMatrix) != 16) stop("Invalid 'userMatrix'")
if (length(fixedSize) != 1) stop("Invalid 'fixedSize'")
idata <- as.integer( c(ncenter,nradius,length(shapes), fixedSize, npos, rotating) )
ret <- .C( rgl_sprites,
success = as.integer(FALSE),
idata,
as.numeric(center),
as.numeric(radius),
as.integer(shapes),
as.numeric(t(userMatrix)),
as.numeric(adj),
pos,
as.numeric(offset),
NAOK=TRUE
)
if (! ret$success)
stop("'rgl_sprites' failed")
lowlevel(ret$success)
}
}
surface3d <- function(x, y = NULL, z = NULL, ...,
normal_x = NULL, normal_y = NULL, normal_z = NULL,
texture_s = NULL, texture_t=NULL,
flip = FALSE) {
.check3d(); save <- material3d(); on.exit(material3d(save))
# Evaluate args
list(x=x,y=z,z=y,coords=c(1,3,2),
normal_x=normal_x,normal_y=normal_z,normal_z=normal_y)
do.call("rgl.material0", .fixMaterialArgs(..., Params = save))
flags <- rep(FALSE, 4)
nrows <- NA
ncols <- NA
if (is.matrix(x)) {
nrows <- nrow(x)
ncols <- ncol(x)
flags[1] <- TRUE
} else nrows <- length(x)
if (is.matrix(y)) {
if (is.na(ncols))
ncols <- ncol(y)
if ( any(dim(y) != c(nrows, ncols)))
stop(gettextf("Bad dimension for %s", "y"),
domain = NA)
flags[2] <- TRUE
} else {
if (is.na(ncols))
ncols <- length(y)
else if (ncols != length(y))
stop(gettextf("Bad length for %s", "y"),
domain = NA)
}
if (is.matrix(z)) {
if (any(dim(z) != c(nrows, ncols)))
stop(gettextf("Bad dimension for %s", "z"))
} else if (!flags[1] && !flags[2] && length(z) == nrows*ncols) {
z <- matrix(z, nrows, ncols)
} else if (!flags[2]) {
if (!flags[1])
stop("At least one coordinate must be a matrix")
if (nrows != length(z))
stop(gettextf("Bad length for %s", "z"))
z <- matrix(z, nrows, ncols)
} else {
if (ncols != length(z))
stop(gettextf("Bad length for %s", "z"))
z <- matrix(z, nrows, ncols, byrow = TRUE)
}
nz <- length(z)
if ( nrows < 2 )
stop("rows < 2")
if ( ncols < 2 )
stop("cols < 2")
coords <- c(1,3,2)
nulls <- c(is.null(normal_x), is.null(normal_y), is.null(normal_z))
if (!all( nulls ) ) {
if (any( nulls )) stop("All normals must be supplied")
if ( !identical(dim(z), dim(normal_x))
|| !identical(dim(z), dim(normal_y))
|| !identical(dim(z), dim(normal_z)) ) stop(gettextf("Bad dimension for %s", "normals"),
domain = NA)
flags[3] <- TRUE
}
nulls <- c(is.null(texture_s), is.null(texture_t))
if (!all( nulls ) ) {
if (any( nulls )) stop("Both texture coordinates must be supplied")
if ( !identical(dim(z), dim(texture_s))
|| !identical(dim(z), dim(texture_t)) ) stop(gettextf("Bad dimension for %s", "textures"),
domain = NA)
flags[4] <- TRUE
}
idata <- as.integer( c( nrows, ncols ) )
xdecreasing <- diff(x[!is.na(x)][1:2]) < 0
ydecreasing <- diff(y[!is.na(y)][1:2]) < 0
parity <- (perm_parity(coords) xdecreasing ydecreasing flip) %% 2
if (is.na(parity))
parity <- 0
ret <- .C( rgl_surface,
success = as.integer(FALSE),
idata,
as.numeric(x),
as.numeric(y),
as.numeric(z),
as.numeric(normal_x),
as.numeric(normal_y),
as.numeric(normal_z),
as.numeric(texture_s),
as.numeric(texture_t),
as.integer(coords),
as.integer(parity),
as.integer(flags),
NAOK=TRUE
)
if (! ret$success)
stop("'rgl_surface' failed")
lowlevel(ret$success)
}
terrain3d <- surface3d
# Interaction
select3d <- function(button = c("left", "middle", "right"),
dev = cur3d(), subscene = currentSubscene3d(dev)) {
.check3d()
rect <- rgl.select(button = button, dev = dev, subscene = subscene)
if (is.null(rect)) return(NULL)
proj <- rgl.projection(dev = dev, subscene = subscene)
llx <- rect[1]
lly <- rect[2]
urx <- rect[3]
ury <- rect[4]
selectionFunction3d(proj, region = c(llx, lly, urx, ury))
}
# 3D Generic Object Rendering Attributes
dot3d <- function(x,...) UseMethod("dot3d")
wire3d <- function(x,...) UseMethod("wire3d")
shade3d <- function(x,...) UseMethod("shade3d")
# 3D Generic transformation
translate3d <- function(obj,x,y,z,...) UseMethod("translate3d")
scale3d <- function(obj,x,y,z,...) UseMethod("scale3d")
rotate3d <- function(obj,angle,x,y,z,matrix,...) UseMethod("rotate3d")
transform3d <- function(obj,matrix,...) rotate3d(obj, matrix = matrix, angle = NA, x = NA, y = NA, z = NA)
subdivision3d <- function(x,...) UseMethod("subdivision3d")
# 3D Custom shapes
particles3d <- function(x,y=NULL,z=NULL,radius=1,...) sprites3d(
x=x,y=y,z=z,radius=radius,
lit=FALSE,alpha=0.2,
textype="alpha",
texture=system.file("textures/particle.png",package="rgl"),
...
)
# r3d default settings for new windows
r3dDefaults <- list(userMatrix = rotationMatrix(290*pi/180, 1, 0, 0),
mouseMode = c("none", "trackball", "zoom", "fov", "pull"),
FOV = 30,
bg = list(color="white",fogtype = "none"),
family = "sans",
material = list(color="black", fog = TRUE))
if (.Platform$OS.type == "windows")
r3dDefaults$useFreeType <- FALSE
open3d <- function(..., params = getr3dDefaults(),
useNULL = rgl.useNULL(), silent = FALSE ) {
register_pkgdown_methods()
args <- list(...)
if (missing(useNULL) && !is.null(params$useNULL)) {
useNULL <- params$useNULL
params$useNULL <- NULL
}
if (missing(silent) && !is.null(params$silent)) {
silent <- params$silent
params$silent <- NULL
}
if (!is.null(args$antialias)
|| !is.null(args$antialias <- r3dDefaults$antialias)) {
saveopt <- options(rgl.antialias = args$antialias)
on.exit(options(saveopt))
args$antialias <- NULL
}
ret <- .C( rgl_dev_open, success=FALSE, useNULL=useNULL )
if (! ret$success)
stop("open failed")
if (!is.null(args$material)) {
params$material <- do.call(.fixMaterialArgs, c(args$material, Params=list(params$material)))
args$material <- NULL
}
if (length(args) && (is.null(names(args))
|| any(nchar(names(args)) == 0)))
stop("open3d parameters must be named")
params[names(args)] <- args
clear3d("material", defaults = params)
params$material <- NULL
if (!is.null(params$bg)) {
do.call("bg3d", params$bg)
params$bg <- NULL
}
do.call("par3d", params)
result <- structure(cur3d(), class = "rglOpen3d")
if (silent)
invisible(result)
else
result
}
print.rglOpen3d <- function(x, ...) {
print(unclass(x))
}
close3d <- function(dev = cur3d(), silent = TRUE) {
for (d in dev[dev != 0]) {
devname <- paste0("dev", d)
rgl.callback.env[[devname]] <- NULL
set3d(d, silent = silent)
if (length(hook <- getHook("on.rgl.close"))) {
if (is.list(hook)) hook <- hook[[1]] # test is for compatibility with R < 3.0.0
hook()
}
ret <- .C( rgl_dev_close, success=FALSE )
if (! ret$success)
stop("close failed")
if (!silent)
message("Closed device ", d)
}
invisible(cur3d())
}
cur3d <- function() .Call( rgl_dev_getcurrent )
rgl.cur <- cur3d
set3d <- function(dev, silent = FALSE) {
prev <- cur3d()
idata <- c( as.integer(dev), as.integer(silent) )
ret <- .C( rgl_dev_setcurrent,
success=FALSE,
idata
)
if (! ret$success)
stop(gettextf("No device opened with id %s", dev), domain = NA)
prev
}
.check3d <- function() {
if (result<-cur3d()) return(result)
else return(open3d())
}
requireWebshot2 <- function() {
suppressMessages(res <- requireNamespace("webshot2", quietly = TRUE))
if (res)
res <- requireNamespace("chromote") &&
!is.null(path <- chromote::find_chrome()) &&
nchar(path) > 0 &&
file.exists(path)
res
}
snapshot3d <- function(filename = tempfile(fileext = ".png"),
fmt = "png", top = TRUE, ..., scene, width = NULL, height = NULL,
webshot = as.logical(Sys.getenv("RGL_USE_WEBSHOT",