text3d_mesh: Text Object

In rayvertex: 3D Software Rasterizer

Text Object

Description

Text Object

Usage

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 are yz and xz.
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. 1 is 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)))
}
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)))
  }
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)))
  }
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)))
}

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("\U1F41D", 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)))
}

rayvertex documentation built on April 4, 2025, 2:37 a.m.