R语言 生成艺术，类似太阳的图案

1.png

2.png

3.png

4.png

全图.png

# Thu Jan 21 10:25:17 2021 -
# https://mp.weixin.qq.com/s/lB4E624lGAXj85-zOXkyPQ
# 字符编码：UTF-8
# R 版本：R x64 4.0.3 for window 10
# cgh163email@163.com
# 个人笔记不负责任
# —— 拎了个梨??
.rs.restartR()
rm(list=ls());gc()
# 生成艺术2
library(tidyverse)
library(ggforce)
library(patchwork)

apply_pattern_theme = function(bg_hex, caption_hex){
  theme(
    plot.background = element_rect(fill = bg_hex),
    panel.background = element_rect(fill = bg_hex),
    panel.grid = element_blank(),
    plot.caption = element_text(family = "Open Sans",size = 6,color = caption_hex),
    legend.position = "none",
    axis.title = element_blank(),
    axis.text = element_blank(),
    axis.ticks = element_blank()
  )}

num_lines = 100
r = 1
circle = tibble(
  len = seq(0, 2*pi, length.out = num_lines),
  x = r*sin(len),
  y = r*cos(len),
  type = 1:100)
circle_test = circle[sample(1:100, 80),]

(p1 <- ggplot() +
    geom_path(data = circle_test,
              aes(x = x, y = y,
                  color = type),
              size = 0.8,
              alpha = 0.8) +
    geom_path(data = circle_test,
              aes(x = x, y = y,
                  color = type),
              size = 0.5) +
    scale_colour_gradient(low = "#f7f7f7",
                          high = "#6b7f8c") +
    coord_fixed()+
    apply_pattern_theme("black","white"))
dev.copy(png, "1.png");dev.off()

# Thu Jan 21 11:27:38 2021 --
#
num_lines = 4000
r_vals = seq(0.5, 1.5, by = .01)
circles_list = list()
for(i in 1:length(r_vals)){
  r = r_vals[i]
  circle = tibble(
    len = seq(0, 2*pi, length.out = num_lines),
    x = r*sin(len),
    y = r*cos(len))
  circles_list[[i]] = circle[sample(1:num_lines,
                                    num_lines/i,replace = FALSE),]}
final_circle = bind_rows(circles_list)

(p2 <- ggplot() +
    geom_point(data = final_circle,
               aes(x = x, y = y),
               color = "#e4cdc3",
               size = 0.1,
               alpha = 0.5) +
    coord_fixed() +
    apply_pattern_theme("black", "white"))
dev.copy(png, "2.png");dev.off()

# Thu Jan 21 11:28:07 2021 --
#
rings = tibble(
  x = 1,xend = 5,y = c(2, 5),yend = c(2, 5))
points = tibble(
  x = c(2, 4, 1.5, 3.5),y = c(2, 2, 5, 5))

(p3 <- ggplot() +
    geom_segment(data = rings,
                 aes(x = x, xend = xend,
                     y = y, yend = yend),
                 color = "white") +
    geom_point(aes(x = 3, y = 0),
               size = 4,
               color = "#c74a00") +
    geom_point(data = points,
               aes(x = x, y = y),
               size = 3,
               color = "#f39200") +
    scale_y_continuous(limits = c(0, 5)) +
    coord_polar() +
    apply_pattern_theme(bg_hex = "#2e2137",
                        caption_hex = "white"))
dev.copy(png, "3.png");dev.off()

# Thu Jan 21 11:28:26 2021 --
#
num_lines = 400
circle = tibble(
  len = seq(0, 2*pi, length.out = num_lines),
  x = sin(len),
  y = cos(len))
triangle_left = circle %>%
  mutate(xend = x,
         x = -1,
         yend = y,
         y = 0)
p4 <- ggplot() +
  geom_polygon(data = circle,
               aes(x = x, y = y),
               fill = "#ab3a3a") +
  geom_segment(data = triangle_left,
               aes(x = x, xend = xend,
                   y = y, yend = yend),
               color = "white",
               size = 0.3,
               lineend = "round") +
  coord_fixed() +
  apply_pattern_theme("white", "black")
p4
dev.copy(png, "4.png");dev.off()

p1+p2+p3+p4
dev.copy(png, "全图.png");dev.off()

```R