Illumination – Incorrect shading according to building light

Whenever I build light in Unreal, the light of objects does not seem to reflect properly. This seems to happen in basically everything that I import into the engine

(I use Blender for all my networks)

[DiesistdieLightmapUVStrahlungfüreinemeinerMaschensoweitichweißdassichdiesrichtiggemachthabeMitInselränderndurcheinandergebrachtabereshilftnicht[ThisisthelightmapUVforoneofmymeshesasfarasi'mawareIhavedonethiscorrectlyMessedaboutwithIslandmarginsbutitdoesn'thelp[DiesistdieLightmap-UV-StrahlungfüreinemeinerMaschensoweitichweißdassichdiesrichtiggemachthabeMitInselränderndurcheinandergebrachtabereshilftnicht[ThisisthelightmapUVforoneofmymeshesasfarasi’mawareIhavedonethiscorrectlyMessedaboutwithIslandmarginsbutitdoesn’thelp1

When you look at the side of the desk, the lighting just seems to randomly pick which parts of the face you want to shadeWhen you look at the side of the desk, the light only seems to randomly choose which parts of the face you want to shade.[[[[2

Some important information you might want increased the resolution of the light, and that did not help.
I've set the lightmap index to 1 to make sure Unreal uses the correct UV, but that does not help.
This lighting setup was previewed, but some objects still produce this mottling effect in production.

r – shading of a non-rectangular area in ggplot with geom_polygon

I'm having trouble shading a non-rectangular region in ggplot. I want to be able to work in the same way as a function of the rethink Package: Shadow() what does that seem to use Polygon () Function. You have to install this rethink () Package. Here are the data and the code for using the base plot, Lines () from graphic Package and shadow from the rethink package.

Library (rethinking)
Data (Howell1)
d <- Howell1
d2 <- d[d$age >= 18,]m4.3 <card (
Alist (height ~ dnorm (mu, sigma),
mu <- a + b * weight,
a ~ dnorm (178, 20),
b ~ dnorm (0, 10),
Sigma-Dunif (0, 50)),
Data = d2)
weight.seq <- seq (from = 25 to 70 = 1)
mu <- link (m4.3, data = data.frame (weight = weight.seq))
mu.mean <- true (mu, 2, mean) # Average of the distributions of the predicted heights for each of the 46 weight values
mu.HPDI <- apply (mu, 2, HPDI, prob = 0.89)

# Represent raw data
# Blanking points make line and intervals more visible
Order (height ~ weight, data = d2, column = Col.alpha (Rangi2, 0.5))

# plot the MAPS line, also known as the mean value for each weight of a candidate in weight.seq
Lines (weight.seq, mu.mean)

# Represent a shaded area for 89% HPDI
Shadow (mu.HPDI, weight.seq)

So a nice, clearly shaded area is visible.

Here's my try in ggplot use geom_polygon, which requires the creation of data frames.

meanDF <- data.frame (weight.seq = weight.seq,
mu.mean = mu.mean)

HPDIDF <- data.frame (weight.seq = weight.seq,
muHPDI_lo = mu.HPDI[1,],
muHPDI_hi = mu.HPDI[2,])
hpdiLong <- gather (HPDIDF, key = lowHi, value = predH, muHPDI_lo, muHPDI_hi) 

Now the graph was

ggplot (d2, aes (weight, height)) +
geom_point (Form = 1, color = "blue") + # represents the original data
geom_line (data = meanDF, aes (weight.seq, mu.mean), size = 1) + # best fit line based on the average of all estimates at each candidate weight value
geom_polygon (data = hpdiLong, aes (weight.seq, predH), fill = "gray") +
theme_classic ()

The resulting shaded area is really unsatisfactory compared to that Shadow() Function. Any idea how that works?

Render a selected part of the terrain with different shading

I'm trying to understand how you can change the shading of the terrain section based on a user selection. When a user selects a city or entity in a game like Civ5, that area is more illuminated than the other parts of the terrain. I try to implement this effect.

In the Civ 5 example, the selected tile has a circle and the selected city has a transparent overlay that closely follows the elevation of the terrain. Civ5 screenshot

Square shading of flower pictures – MathOverflow

I wondered if anyone could help shade these petals. It's half finished, but I just want to shade the inside of the petals.

This is the picture:

Enter the image description here

Here are my previous equations: Enter image description here

I wondered if anyone knew which domain and area restrictions I could add to just shadow the inside of the petal.

Many Thanks