331 lines
9.7 KiB
Python
Executable File
331 lines
9.7 KiB
Python
Executable File
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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import sys, getopt
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import os, glob, errno
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import math, random
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from PIL import Image, ImageDraw
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import svgwrite
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import datetime
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from sympy.geometry import Circle, Point
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# __ ___ _
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# / |/ /___ _(_)___
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# / /|_/ / __ `/ / __ \
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# / / / / /_/ / / / / /
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# /_/ /_/\__,_/_/_/ /_/
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def main(argv):
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# Options
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export_svg = False
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export_bmp = False
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try:
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opts, args = getopt.getopt(argv,"n:",["number=", "svg", "bmp"])
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print(opts)
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except getopt.GetoptError as err:
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print('mapgen.py [-n, --number][--svg][--bmp]')
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print(str(err))
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sys.exit(2)
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for opt, arg in opts:
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if opt == '-h':
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print('mapgen.py [-n, --number]')
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sys.exit()
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elif opt in ("-n", "--number"):
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number = int(arg)
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elif opt in ("--svg"):
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export_svg = True
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elif opt in ("--bmp"):
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export_bmp = True
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if not export_svg and not export_bmp:
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print('please explicitly provide --svg and/or --bmp option')
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sys.exit()
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# sys.exit()
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# create maps export folder
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base = "maps"
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now = datetime.datetime.now()
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now = now.strftime("%Y-%m-%d_%X")
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print(now)
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directory = base + "/" + now
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try:
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os.makedirs(directory)
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except OSError as exception:
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if exception.errno != errno.EEXIST:
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raise
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# generate n maps
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for i in range(0, number):
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index = str(i) if i > 9 else '0'+str(i)
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print(index)
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generateMap(index, directory, export_svg, export_bmp)
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# __ ___
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# / |/ /___ _____
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# / /|_/ / __ `/ __ \
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# / / / / /_/ / /_/ /
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# /_/ /_/\__,_/ .___/
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# /_/
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def generateMap(index, directory, svg, bmp):
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nv = random.randint(5,15)
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points = generatePolygon( ctrX=500, ctrY=500, aveRadius=300, irregularity=0.7, spikeyness=0.3, numVerts=nv )
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# print(points)
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lines = fractalize(points)
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# print(lines)
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if svg:
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generateSVG(lines, directory, index)
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if bmp:
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generateBmp(lines, directory, index)
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# ____ __
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# / __ \____ / /_ ______ _____ ____
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# / /_/ / __ \/ / / / / __ `/ __ \/ __ \
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# / ____/ /_/ / / /_/ / /_/ / /_/ / / / /
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# /_/ \____/_/\__, /\__, /\____/_/ /_/
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# /____//____/
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# http://stackoverflow.com/questions/8997099/algorithm-to-generate-random-2d-polygon
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def generatePolygon( ctrX, ctrY, aveRadius, irregularity, spikeyness, numVerts ) :
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'''Start with the centre of the polygon at ctrX, ctrY,
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then creates the polygon by sampling points on a circle around the centre.
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Randon noise is added by varying the angular spacing between sequential points,
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and by varying the radial distance of each point from the centre.
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Params:
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ctrX, ctrY - coordinates of the "centre" of the polygon
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aveRadius - in px, the average radius of this polygon, this roughly controls how large the polygon is, really only useful for order of magnitude.
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irregularity - [0,1] indicating how much variance there is in the angular spacing of vertices. [0,1] will map to [0, 2pi/numberOfVerts]
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spikeyness - [0,1] indicating how much variance there is in each vertex from the circle of radius aveRadius. [0,1] will map to [0, aveRadius]
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numVerts - self-explanatory
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Returns a list of vertices, in CCW order.
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'''
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irregularity = clip( irregularity, 0,1 ) * 2*math.pi / numVerts
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spikeyness = clip( spikeyness, 0,1 ) * aveRadius
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# generate n angle steps
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angleSteps = []
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lower = (2*math.pi / numVerts) - irregularity
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upper = (2*math.pi / numVerts) + irregularity
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sum = 0
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for i in range(numVerts) :
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tmp = random.uniform(lower, upper)
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angleSteps.append( tmp )
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sum = sum + tmp
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# normalize the steps so that point 0 and point n+1 are the same
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k = sum / (2*math.pi)
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for i in range(numVerts) :
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angleSteps[i] = angleSteps[i] / k
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# now generate the points
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points = []
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angle = random.uniform(0, 2*math.pi)
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for i in range(numVerts) :
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r_i = clip( random.gauss(aveRadius, spikeyness), 0, 2*aveRadius )
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x = ctrX + r_i*math.cos(angle)
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y = ctrY + r_i*math.sin(angle)
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points.append( (int(x),int(y)) )
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angle = angle + angleSteps[i]
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return points
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def clip(x, min, max) :
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if( min > max ) : return x
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elif( x < min ) : return min
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elif( x > max ) : return max
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else : return x
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# ______ __ ___
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# / ____/________ ______/ /_____ _/ (_)___ ___
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# / /_ / ___/ __ `/ ___/ __/ __ `/ / /_ / / _ \
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# / __/ / / / /_/ / /__/ /_/ /_/ / / / / /_/ __/
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# /_/ /_/ \__,_/\___/\__/\__,_/_/_/ /___/\___/
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def fractalize(points) :
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# print("Fractalize")
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# print(points)
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lines = []
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# probality of line fractalization
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proba_fract = random.randint(1,7)
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# loop through points 2 by 2 to obtain lines
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# line can be fractalized or not
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for p in range(0, len(points)):
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p1 = points[p]
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p2 = points[0] if p >= len(points)-1 else points[p+1];
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line_pts = [p1,p2]
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# print(line_pts)
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# fractalize the line or not (juste leave it as two points)
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if random.randint(1,10) > proba_fract:
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# fractal type
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fract_types = "coast internal strait".split()
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ft = random.choice(fract_types)
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if ft == "coast":
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fract_depth = 14
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fract_intesity = random.randint(550,600)* 0.001
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elif ft == "internal":
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fract_depth = 9
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fract_intesity = random.randint(520,550)* 0.001
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elif ft == "strait":
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fract_depth = 5
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fract_intesity = random.randint(501,510)* 0.001
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# number of fracatllization
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for i in range(fract_depth):
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# loop throug points to divide then
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fpts = []
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for v in range(0, len(line_pts)-1):
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fp1 = line_pts[v]
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fpts.append(fp1)
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fp2 = line_pts[v+1];
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d = distance(fp1,fp2)
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# print(d)
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# r = d*0.52
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r = d*fract_intesity
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fps1,fps2 = circle_intersection((fp1[0],fp1[1],r), (fp2[0],fp2[1],r))
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# print(fps1)
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# print(ps2)
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if random.randint(1,2) == 2:
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fpts.append(fps2)
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else:
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fpts.append(fps1)
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# add the last point
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fpts.append(fp2)
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line_pts = fpts
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# add the line, fractalized or not
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lines.append(line_pts)
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return lines
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# Distance function
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def distance(p1,p2):
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sq1 = (p1[0]-p2[0])*(p1[0]-p2[0])
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sq2 = (p1[1]-p2[1])*(p1[1]-p2[1])
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return math.sqrt(sq1 + sq2)
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def circle_intersection(circle1, circle2):
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'''
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@summary: calculates intersection points of two circles
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@param circle1: tuple(x,y,radius)
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@param circle2: tuple(x,y,radius)
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@result: tuple of intersection points (which are (x,y) tuple)
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'''
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# return self.circle_intersection_sympy(circle1,circle2)
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x1,y1,r1 = circle1
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x2,y2,r2 = circle2
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# http://stackoverflow.com/a/3349134/798588
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dx,dy = x2-x1,y2-y1
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d = math.sqrt(dx*dx+dy*dy)
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if d > r1+r2:
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print("#1")
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return None # no solutions, the circles are separate
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if d < abs(r1-r2):
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print("#2")
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return None # no solutions because one circle is contained within the other
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if d == 0 and r1 == r2:
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print("#3")
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return None # circles are coincident and there are an infinite number of solutions
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a = (r1*r1-r2*r2+d*d)/(2*d)
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h = math.sqrt(r1*r1-a*a)
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xm = x1 + a*dx/d
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ym = y1 + a*dy/d
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xs1 = xm + h*dy/d
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xs2 = xm - h*dy/d
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ys1 = ym - h*dx/d
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ys2 = ym + h*dx/d
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return (xs1,ys1),(xs2,ys2)
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# ______ ________
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# / ___/ | / / ____/
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# \__ \| | / / / __
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# ___/ /| |/ / /_/ /
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# /____/ |___/\____/
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def generateSVG(lines, directory, index):
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svg = svgwrite.Drawing(filename = directory+"/map-"+index+".svg",size = ("1000px", "1000px"))
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# polygone (white background)
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polygone = []
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for l in range(0, len(lines)):
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for p in range(0, len(lines[l])):
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polygone.append(lines[l][p])
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bgline = svg.polyline(polygone,
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stroke = "white",
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stroke_width = "30",
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stroke_linejoin= "round",
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stroke_linecap = "round",
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fill = "white")
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svg.add(bgline)
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# strokes
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for l in range(0, len(lines)):
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# change randomly stroke attributes
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if len(lines[l]) < 3 or (random.randint(0,10) > 8 and len(lines[l]) < 10):
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sw = "1"
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sda = "4 4"
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sdo = "5"
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else:
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sw = "1"
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sda = "0 0"
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sdo = "0"
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line = svg.polyline(lines[l],
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stroke = "black",
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stroke_width = sw,
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stroke_linejoin= "round",
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stroke_linecap = "round",
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stroke_dasharray = sda,
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stroke_dashoffset = sdo,
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fill = "none")
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svg.add(line)
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svg.save()
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# __ _ __
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# / /_ (_) /_____ ___ ____ _____
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# / __ \/ / __/ __ `__ \/ __ `/ __ \
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# / /_/ / / /_/ / / / / / /_/ / /_/ /
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# /_.___/_/\__/_/ /_/ /_/\__,_/ .___/
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# /_/
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def generateBmp(lines, directory, index):
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black = (0,0,0)
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white=(255,255,255)
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im = Image.new('RGB', (1000, 1000), white)
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imPxAccess = im.load()
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draw = ImageDraw.Draw(im)
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# tupVerts = list(map(tuple,verts))
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polygone = []
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for l in range(0, len(lines)):
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for p in range(0, len(lines[l])):
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polygone.append(lines[l][p])
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# either use .polygon(), if you want to fill the area with a solid colour
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# draw.polygon( polygone, outline=black,fill=white )
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# or .line() if you want to control the line thickness, or use both methods together!
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draw.line( polygone+[polygone[0]], width=1, fill=black )
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# im.show()
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im.save(directory+'/map-'+str(index)+'.bmp')
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# now you can save the image (im), or do whatever else you want with it.
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if __name__ == "__main__":
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main(sys.argv[1:])
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