Text Object
text3d_mesh(
label,
position = c(0, 0, 0),
text_height = 1,
orientation = "xy",
font_color = "black",
font_size = 100,
font = "sans",
font_lineheight = 12,
background_color = "white",
background_alpha = 0,
angle = c(0, 0, 0),
pivot_point = c(0, 0, 0),
order_rotation = c(1, 2, 3),
scale = c(1, 1, 1)
)Arguments
- label
Text string.
- position
Default
c(0,0,0). Position of the mesh.- text_height
Default
1. Height of the text.- orientation
Default
xy. Orientation of the plane. Other options areyzandxz.- font_color
Default
"black". The font color.- font_size
Default
100. The size of the font. Note that this does not control the size of the text, just the resolution as rendered in the texture.- font
Default
"sans". A character string specifying the font family (e.g.,"Arial","Times","Helvetica").- font_lineheight
Default
12. The lineheight for strings with newlines.- background_color
Default
"white". The background color.- background_alpha
Default
0. The background opacity.1is fully opaque.- angle
Default
c(0,0,0). Angle to rotate the mesh.- pivot_point
Default
c(0,0,0). Point around which to rotate the mesh.- order_rotation
Default
c(1,2,3). Order to rotate the axes.- scale
Default
c(1,1,1). Scale of the mesh. Can also be a single numeric value scaling all axes uniformly.
Value
List describing the mesh.
Examples
if(run_documentation()) {
#Generate a label in the Cornell box.
generate_cornell_mesh() |>
add_shape(text3d_mesh(label="Cornell Box", position=c(555/2,555/2,555/2),angle=c(0,180,0),
text_height=120)) |>
rasterize_scene(light_info = directional_light(c(0.1,0.4,-1)))
}
#> Setting default values for Cornell box: lookfrom `c(278,278,-800)` lookat `c(278,278,0)` fov `40` .
if(run_documentation()) {
#Change the orientation
generate_cornell_mesh() |>
add_shape(text3d_mesh(label="YZ Plane", position=c(540,555/2,555/2),text_height=180,
orientation = "yz",angle=c(0,180,0))) |>
add_shape(text3d_mesh(label="XY Plane", position=c(555/2,555/2,540),text_height=180,
orientation = "xy", angle=c(0,180,0))) |>
add_shape(text3d_mesh(label="XZ Plane", position=c(555/2,15,555/2),text_height=180,
orientation = "xz", angle=c(0,180,0))) |>
rasterize_scene(light_info = directional_light(c(0.1,0.4,-1)))
}
#> Setting default values for Cornell box: lookfrom `c(278,278,-800)` lookat `c(278,278,0)` fov `40` .
if(run_documentation()) {
#Add an label in front of a sphere and change the font
generate_cornell_mesh() |>
add_shape(text3d_mesh(label="Cornell Box", position=c(555/2,555/2,555/2),text_height=180,
font = "Serif", font_color="orange",
angle=c(0,180,0))) |>
add_shape(text3d_mesh(label="Sphere", position=c(555/2,130,100),text_height=100,
font = "sans",
font_color="lightblue",angle=c(0,180,40))) |>
add_shape(sphere_mesh(radius=100,position=c(555/2,100,555/2),
material=material_list(diffuse="purple",type="phong"))) |>
rasterize_scene(light_info = directional_light(c(0.1,0.4,-1)))
}
#> Setting default values for Cornell box: lookfrom `c(278,278,-800)` lookat `c(278,278,0)` fov `40` .
if(run_documentation()) {
#A room full of b's
set.seed(1)
bee_scene = list()
for(i in 1:100) {
bee_scene = add_shape(bee_scene, text3d_mesh("B", position=c(20+runif(3)*525),
font_color="yellow", text_height = 100,
angle=c(0,180,0)))
}
generate_cornell_mesh() |>
add_shape(bee_scene) |>
rasterize_scene(light=directional_light(c(0,1,-1)))
}
#> Setting default values for Cornell box: lookfrom `c(278,278,-800)` lookat `c(278,278,0)` fov `40` .
if(run_documentation()) {
#A room full of bees
bee_scene = list()
set.seed(1)
for(i in 1:100) {
bee_scene = add_shape(bee_scene, text3d_mesh("🐝", position=c(20+runif(3)*525),
font_color="yellow", text_height = 100,
angle=c(0,180,0)))
}
generate_cornell_mesh() |>
add_shape(bee_scene) |>
rasterize_scene(light=directional_light(c(0,1,-1)))
}
#> Setting default values for Cornell box: lookfrom `c(278,278,-800)` lookat `c(278,278,0)` fov `40` .
