Nothing
# https://mathworld.wolfram.com/RegularOctahedron.html
## d8 Top
d8TopGrob <- function(piece_side, suit, rank, cfg=pp_cfg(),
x=unit(0.5, "npc"), y=unit(0.5, "npc"), z=unit(0, "npc"),
angle=0, type="normal",
width=NA, height=NA, depth=NA,
op_scale=0, op_angle=45) {
cfg <- as_pp_cfg(cfg)
x <- convertX(x, "in", valueOnly = TRUE)
y <- convertY(y, "in", valueOnly = TRUE)
z <- convertX(z, "in", valueOnly = TRUE)
width <- convertX(width, "in", valueOnly = TRUE)
height <- convertY(height, "in", valueOnly = TRUE)
depth <- convertX(depth, "in", valueOnly = TRUE)
#### allow limited 3D rotation #281
axis_x <- 0
axis_y <- 0
####
xyz <- d8t_xyz(x, y, z, angle, axis_x, axis_y, width, height, depth)
p <- Polygon$new(convex_xy(6, 0))
edge_types <- paste0("d8_", c("right", "back", "left", "opposite_left", "opposite_back", "opposite_right"))
order <- p$op_edge_order(op_angle)
df <- tibble(index = 1:6, edge = edge_types, level = c(2, 1, 2, 1, 2, 1))[order, ]
df <- df[order(df$level), ]
gl <- gList()
for (i in 1:nrow(df)) {
edge <- df$edge[i]
edge_rank <- d8_edge_rank(edge, rank)
opt <- cfg$get_piece_opt("die_face", suit, edge_rank)
gp <- gpar(col = opt$border_color, lex = opt$border_lex, fill = opt$background_color)
xyz_polygon <- switch(edge,
d8_left = xyz[c(1,5,2)],
d8_back = xyz[c(1,6,5)],
d8_right = xyz[c(1,3,6)],
d8_opposite_left = xyz[c(4,2,5)],
d8_opposite_back = xyz[c(4,3,2)],
d8_opposite_right = xyz[c(4,6,3)]
)
xy_polygon <- xyz_polygon$project_op(op_angle, op_scale)
xy_vp <- xy_vp_convex(xyz_polygon, op_scale, op_angle)
gl[[i]] <- at_ps_grob("die_face", suit, edge_rank, cfg, xy_vp, xy_polygon, name = edge)
}
# face
xyz_polygon <- xyz[1:3]
xy_polygon <- xyz_polygon$project_op(op_angle, op_scale)
xy_vp <- xy_vp_convex(xyz_polygon, op_scale, op_angle)
gl[[nrow(df)+1]] <- at_ps_grob("die_face", suit, rank, cfg, xy_vp, xy_polygon, name = "d8_face")
# pre-compute grobCoords
coords_xyl <- as.list(as.data.frame(xyz$project_op(op_angle, op_scale)$convex_hull))
gTree(scale = 1,
coords_xyl = coords_xyl,
children=gl, cl=c("projected_rpg_die", "coords_xyl"))
}
d8t_xyz <- function(x, y, z,
angle, axis_x, axis_y,
width, height, depth) {
pc <- Point3D$new(x, y, z)
xyz_t <- Point3D$new(convex_xy(3, 90), z = 0.0)$translate(-0.5, -0.5, 0.5)
xyz_b <- convex_xy(3, -90)
xyz_b <- Point3D$new(x = xyz_b$x[c(1,3,2)], y = xyz_b$y[c(1,3,2)], z = 0.0)$translate(-0.5, -0.5, -0.5)
xs <- c(xyz_t$x, xyz_b$x)
ys <- c(xyz_t$y, xyz_b$y)
zs <- c(xyz_t$z, xyz_b$z)
Point3D$new(xs, ys, zs)$dilate(width, height, depth)$rotate(angle, axis_x, axis_y)$translate(pc)
}
save_d8_obj <- function(piece_side, suit, rank, cfg,
x, y, z, angle, axis_x, axis_y,
width, height, depth,
filename, scale, res) {
cfg <- as_pp_cfg(cfg)
opt <- cfg$get_piece_opt(piece_side, suit, rank)
xyz <- d8_xyz(suit, rank, cfg,
x, y, z,
angle, axis_x, axis_y,
width, height, depth)
cxy <- convex_xy(3, 90)
xy_vt <- list(x = rep(cxy$x / 2, 8) + rep(rep(0:1 / 2, each = 3), 4),
y = rep(cxy$y / 4, 8) + rep(rep(3:0 / 4, each = 3), each = 2))
# textured face elements: face, left, right, back, opposite, opposite left, opposite right, opposite back
f <- list()
fn_vt <- function(r) switch(r, 1:3, 4:6, 7:9, 10:12, 13:15, 16:18, 19:21, 22:24)
f[[1]] <- list(v = 1:3,
vt = fn_vt(rank))
f[[2]] <- list(v = 4:6,
vt = fn_vt(d8_edge_rank("d8_left", rank)))
f[[3]] <- list(v = 7:9,
vt = fn_vt(d8_edge_rank("d8_right", rank)))
f[[4]] <- list(v = 10:12,
vt = fn_vt(d8_edge_rank("d8_back", rank)))
f[[5]] <- list(v = 13:15,
vt = fn_vt(d8_edge_rank("d8_opposite", rank)))
f[[6]] <- list(v = 16:18,
vt = fn_vt(d8_edge_rank("d8_opposite_left", rank)))
f[[7]] <- list(v = 19:21,
vt = fn_vt(d8_edge_rank("d8_opposite_right", rank)))
f[[8]] <- list(v = 22:24,
vt = fn_vt(d8_edge_rank("d8_opposite_back", rank)))
ext <- tools::file_ext(filename)
mtl_filename <- gsub(paste0("\\.", ext, "$"), ".mtl", filename)
png_filename <- gsub(paste0("\\.", ext, "$"), ".png", filename)
write_obj(filename, v = xyz, vt = xy_vt, f = f)
write_d8_texture("die_face", suit, rank, cfg, filename = png_filename, res = res)
invisible(list(obj = filename, mtl = mtl_filename, png = png_filename))
}
d8_edge_rank <- function(edge, rank) {
switch(edge,
d8_left = d8_rank(rank + 2),
d8_back = d8_rank(rank + 4),
d8_right = d8_rank(rank + 6),
d8_opposite = 9 - rank,
d8_opposite_left = d8_rank(9 - rank + 2),
d8_opposite_back = d8_rank(9 - rank + 4),
d8_opposite_right = d8_rank(9 - rank + 6)
)
}
d8_rank <- function(x) {
(x - 1) %% 8 + 1
}
d8_xyz <- function(suit, rank, cfg,
x, y, z,
angle, axis_x, axis_y,
width, height, depth) {
pc <- Point3D$new(x, y, z)
xyz_t <- Point3D$new(convex_xy(3, 90), z = 0.0)$translate(-0.5, -0.5, 0.5)
xyz_b <- convex_xy(3, -90)
xyz_b <- Point3D$new(x = xyz_b$x[c(1,3,2)], y = xyz_b$y[c(1,3,2)], z = 0.0)$translate(-0.5, -0.5, -0.5)
# face
xs_f <- xyz_t$x
ys_f <- xyz_t$y
zs_f <- xyz_t$z
# left
xs_l <- c(xyz_t$x[1], xyz_b$x[2], xyz_t$x[2])
ys_l <- c(xyz_t$y[1], xyz_b$y[2], xyz_t$y[2])
zs_l <- c(xyz_t$z[1], xyz_b$z[2], xyz_t$z[2])
# right
xs_r <- c(xyz_t$x[1], xyz_t$x[3], xyz_b$x[3])
ys_r <- c(xyz_t$y[1], xyz_t$y[3], xyz_b$y[3])
zs_r <- c(xyz_t$z[1], xyz_t$z[3], xyz_b$z[3])
# back
xs_b <- c(xyz_t$x[1], xyz_b$x[3], xyz_b$x[2])
ys_b <- c(xyz_t$y[1], xyz_b$y[3], xyz_b$y[2])
zs_b <- c(xyz_t$z[1], xyz_b$z[3], xyz_b$z[2])
# opposite
xs_o <- xyz_b$x
ys_o <- xyz_b$y
zs_o <- xyz_b$z
# opposite left
xs_ol <- c(xyz_b$x[1], xyz_t$x[2], xyz_b$x[2])
ys_ol <- c(xyz_b$y[1], xyz_t$y[2], xyz_b$y[2])
zs_ol <- c(xyz_b$z[1], xyz_t$z[2], xyz_b$z[2])
# opposite right
xs_or <- c(xyz_b$x[1], xyz_b$x[3], xyz_t$x[3])
ys_or <- c(xyz_b$y[1], xyz_b$y[3], xyz_t$y[3])
zs_or <- c(xyz_b$z[1], xyz_b$z[3], xyz_t$z[3])
# opposite back
xs_ob <- c(xyz_b$x[1], xyz_t$x[3], xyz_t$x[2])
ys_ob <- c(xyz_b$y[1], xyz_t$y[3], xyz_t$y[2])
zs_ob <- c(xyz_b$z[1], xyz_t$z[3], xyz_t$z[2])
xs <- c(xs_f, xs_l, xs_r, xs_b, xs_o, xs_ol, xs_or, xs_ob)
ys <- c(ys_f, ys_l, ys_r, ys_b, ys_o, ys_ol, ys_or, ys_ob)
zs <- c(zs_f, zs_l, zs_r, zs_b, zs_o, zs_ol, zs_or, zs_ob)
R <- AA_to_R(angle, axis_x, axis_y)
Point3D$new(xs, ys, zs)$dilate(width, height, depth)$rotate(R)$translate(pc)
}
write_d8_texture <- function(piece_side = "die_face", suit = 1, rank = 1, cfg = pp_cfg(),
..., filename = tempfile(fileext = ".png"), res = 72) {
current_dev <- grDevices::dev.cur()
if (current_dev > 1) on.exit(grDevices::dev.set(current_dev))
width <- cfg$get_width("die_face", suit, rank)
args <- list(filename = filename, height = 4 * width, width = 2 * width,
units = "in", res = res, bg = "transparent")
if (capabilities("cairo"))
args$type <- "cairo"
do.call(grDevices::png, args)
xs <- rep(1:2 / 2 - 1/4, 4)
ys <- rep(4:1 / 4 - 1/8, each = 2)
for (i in 1:8) {
pushViewport(viewport(x = xs[i], width = 1/2, y = ys[i], height = 1/4))
draw_piece_and_bleed("die_face", suit, i, cfg)
popViewport()
}
grDevices::dev.off()
invisible(filename)
}
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.