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https://github.com/MartinThoma/LaTeX-examples.git
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132 lines
3 KiB
Python
132 lines
3 KiB
Python
from random import uniform
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import random
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import math
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print """\documentclass{article}
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\usepackage[pdftex,active,tightpage]{preview}
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\setlength\PreviewBorder{2mm}
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\usepackage{tikz}
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\usepackage{tkz-fct}
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\usetikzlibrary{shapes.misc}
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\usetikzlibrary{shapes, calc, decorations}
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\usepackage{amsmath,amssymb}
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\\begin{document}
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\\begin{preview}
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\\begin{tikzpicture}[scale=0.1,dot/.style={ thick,
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draw=gray,
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cross out,
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inner sep=0pt,
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minimum width=4pt,
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minimum height=4pt}]
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"""
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def get_position_from_offset(px, py, angle, radius):
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x = px + radius * math.cos(math.radians(angle))
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y = py + radius * math.sin(math.radians(angle))
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return (x, y)
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n = 5
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xSum = 0
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ySum = 0
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coordinates = [(0, 0)]
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random.seed(13)
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for i in range(n-1):
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radius = uniform(0, 20)
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angle = uniform(0, 360)
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px, py = coordinates[-1]
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x, y = get_position_from_offset(px, py, angle, radius)
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xSum += x
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ySum += y
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coordinates.append((x, y))
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center = (float(xSum) / n, float(ySum) / n)
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cx, cy = center
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coordinates.append((cx+15, cy))
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pointCoords = ""
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for p in coordinates:
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px, py = p
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px -= cx
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py -= cy
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newP = "(%.2f,%.2f)," % (px, py)
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pointCoords = newP + pointCoords
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deltaY = 0-py
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deltaX = 0-px
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length = (deltaY**2+deltaX**2)**0.5
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sinAlpha = deltaY/length
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cosAlpha = deltaX/length
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print("\draw[->] (%.2f,%.2f) -- (%.2f,%.2f);" %
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(px, py, px+cosAlpha*length*0.80, py+sinAlpha*length*0.80))
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print("\\node[circle,inner sep=1pt,fill] at (%.2f,%.2f) {};" % (0, 0))
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print("\\foreach \point in {" + pointCoords[:-1] + "}{")
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print("\\node[dot] at \point {};")
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print("}")
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###############################################################################
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random.seed(17)
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xSum = 0
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ySum = 0
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coordinates = [(0, 0)]
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for i in range(n-1):
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radius = uniform(0, 20)
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angle = uniform(0, 360)
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px, py = coordinates[-1]
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x, y = get_position_from_offset(px, py, angle, radius)
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xSum += x
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ySum += y
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coordinates.append((x, y))
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center = (float(xSum) / n, float(ySum) / n)
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cx, cy = center
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coordinates.append((cx-15, cy))
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xOffset = 40
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cTmp = []
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for p in coordinates:
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px, py = p
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cTmp.append((px-cx+xOffset, py-cy))
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coordinates = cTmp
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cx, cy = xOffset, 0
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pointCoords = ""
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for p in coordinates:
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px, py = p
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newP = "(%.2f,%.2f)," % (px, py)
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pointCoords = newP + pointCoords
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deltaY = -py
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deltaX = xOffset-px
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length = (deltaY**2+deltaX**2)**0.5
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sinAlpha = deltaY/length
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cosAlpha = deltaX/length
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print("\draw[->] (%.2f,%.2f) -- (%.2f,%.2f);" %
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(px, py, px+cosAlpha*length*0.80, py+sinAlpha*length*0.80))
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print("\\node[circle,inner sep=1pt,fill] at (%.2f,%.2f) {};" % (xOffset, 0))
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print("\\foreach \point in {" + pointCoords[:-1] + "}{")
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print("\\node[dot] at \point {};")
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print("}")
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##################################
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print("\\node[circle,inner sep=1pt,fill] at (%.2f,%.2f) {};" % (xOffset, 0))
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print("\\foreach \point in {(15,0), (35,0)}{")
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print("\\node[dot] at \point {};")
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print("}")
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print """
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\end{tikzpicture}
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\end{preview}
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\end{document}
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"""
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