if(rayshader:::run_documentation()) {
#Starting at Moss Landing in Monterey Bay, we are going to simulate a flight of a bird going
#out to sea and diving for food.
#First, create simulated lat/long data
set.seed(2009)
moss_landing_coord = c(36.806807, -121.793332)
x_vel_out = -0.001 + rnorm(1000)[1:300]/1000
y_vel_out = rnorm(1000)[1:300]/200
z_out = c(seq(0,2000,length.out = 180), seq(2000,0,length.out=10),
seq(0,2000,length.out = 100), seq(2000,0,length.out=10))
bird_track_lat = list()
bird_track_long = list()
bird_track_lat[[1]] = moss_landing_coord[1]
bird_track_long[[1]] = moss_landing_coord[2]
for(i in 2:300) {
bird_track_lat[[i]] = bird_track_lat[[i-1]] + y_vel_out[i]
bird_track_long[[i]] = bird_track_long[[i-1]] + x_vel_out[i]
}
#Render the 3D map
montereybay %>%
sphere_shade() %>%
plot_3d(montereybay,zscale=50,water=TRUE,
shadowcolor="#40310a", watercolor="#233aa1", background = "tan",
theta=210, phi=22, zoom=0.20, fov=55)
#Pass in the extent of the underlying raster (stored in an attribute for the montereybay
#dataset) and the latitudes, longitudes, and altitudes of the track.
render_path(extent = attr(montereybay,"extent"),
lat = unlist(bird_track_lat), long = unlist(bird_track_long),
altitude = z_out, zscale=50,color="white", antialias=TRUE)
render_snapshot()
}
if(rayshader:::run_documentation()) {
#We'll set the altitude to right above the water to give the tracks a "shadow".
render_path(extent = attr(montereybay,"extent"),
lat = unlist(bird_track_lat), long = unlist(bird_track_long),
altitude = 10, zscale=50, color="black", antialias=TRUE)
render_camera(theta=30,phi=35,zoom=0.45,fov=70)
render_snapshot()
}
if(rayshader:::run_documentation()) {
#Remove the path:
render_path(clear_previous=TRUE)
#Finally, we can also plot just GPS coordinates offset from the surface by leaving altitude `NULL`
# Here we plot a spiral of values surrounding Moss Landing. This requires the original heightmap.
t = seq(0,2*pi,length.out=1000)
circle_coords_lat = moss_landing_coord[1] + 0.5 * t/8 * sin(t*6)
circle_coords_long = moss_landing_coord[2] + 0.5 * t/8 * cos(t*6)
render_path(extent = attr(montereybay,"extent"), heightmap = montereybay,
lat = unlist(circle_coords_lat), long = unlist(circle_coords_long),
zscale=50, color="red", antialias=TRUE,offset=100, linewidth=5)
render_camera(theta = 160, phi=33, zoom=0.4, fov=55)
render_snapshot()
}
if(rayshader:::run_documentation()) {
#And all of these work with `render_highquality()`
render_highquality(clamp_value=10, line_radius=3, min_variance = 0,
sample_method = "sobol_blue", samples = 128)
}
if(rayshader:::run_documentation()) {
#We can also change the material of the objects by setting the `point_material` and
#`point_material_args` arguments in `render_highquality()`
render_highquality(clamp_value=10, line_radius=3, min_variance = 0,
sample_method = "sobol_blue", samples = 128,
path_material = rayrender::glossy,
path_material_args = list(gloss = 0.5, reflectance = 0.2))
}
if(rayshader:::run_documentation()) {
#For transmissive materials (like `dielectric`), we should specify that the path
#should be rendered with an extruded path. We'll use the `attenuation` argument in
#the `dielectric` function to specify a realistic glass color.
render_path(extent = attr(montereybay,"extent"), heightmap = montereybay, clear_previous = TRUE,
lat = unlist(circle_coords_lat), long = unlist(circle_coords_long),
zscale=50, color="white", offset=200, linewidth=5)
render_highquality(clamp_value=10, line_radius=6, min_variance = 0,
sample_method = "sobol_blue", samples = 128,
lightsize = 2000, lightintensity = 10,
path_material = rayrender::dielectric, use_extruded_paths = TRUE,
path_material_args = list(refraction = 1.5, attenuation = c(0.05,0.2,0.2)))
}
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