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WordCloudGenerator.py
134 lines (94 loc) · 3.91 KB
/
WordCloudGenerator.py
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import Drawer
import pygame
import sys
import os
import random
import math
from pygame.locals import *
from Parser import Parser
import ObjectLogger
class WordCloudGenerator(object):
def __init__(self):
self.logger = ObjectLogger.ObjectLogger("WordCloudGenerator")
self.logger.log("Initialising pygame")
pygame.init()
self.windowHeight = 800
self.windowWidth = 800
self.logger.log("Creating DISPLAYSURF with dimensions %dx%d" % (self.windowWidth, self.windowHeight))
self.DISPLAYSURF = pygame.display.set_mode((self.windowWidth, self.windowHeight))
self.logger.log("Creating wordCloudContainerRect")
self.wordCloudContainerRect = self.DISPLAYSURF.get_rect()
self.wordCloudContainerRect.width -= 150
self.wordCloudContainerRect.height -= 150
self.wordCloudContainerRect.topleft = (75,75)
self.logger.log("Creating drawer object")
self.drawer = Drawer.Drawer(self.DISPLAYSURF)
self.drawer.fillBackground()
def generateWordCloud(self, parsedDocument, imageOutputPath):
self.logger.log("Generating wordcloud")
self.logger.log("Choosing random colour scheme")
self.drawer.randomizeColourScheme()
self.drawer.fillBackground()
self.logger.log("Creating empty wordRectObj list")
self.wordRectList = []
self.logger.log("Placing words in wordcloud on display surface")
self.placeWords(parsedDocument)
self.logger.log("Exporting wordcloud to %s" % imageOutputPath)
self.drawer.exportDisplaySurf(imageOutputPath)
self.logger.log("Wordcloud finished generating")
def placeWords(self, parsedDocument):
for wordNumber, word in enumerate(parsedDocument.wordList):
self.placeWord(word, wordNumber)
pygame.display.update()
def placeWord(self, word, wordNumber):
if wordNumber == 0:
return self.placeInitialWord(word, wordNumber)
textSurfaceObj, textRectObj = self.drawer.createTextRects(word[0], self.getWordSize(wordNumber))
textRectObj.center = random.choice(self.wordRectList).center
# Old system of choosing initial location for word. Resulted in multiple little word cloud
# spread around, commented out rather than deleted for posterity.
#rand_bottom = random.randint(textRectObj.height, self.drawer.DISPLAYSURF.get_height())
#rand_right = random.randint(textRectObj.width, self.drawer.DISPLAYSURF.get_width())
#textRectObj.center = (rand_bottom, rand_right)
validLocation = self.validTextRectLocation(textRectObj)
distanceToJump = 10
while validLocation:
if validLocation == 2:
textRectObj.center = random.choice(self.wordRectList).center
if bool(random.getrandbits(1)):
if bool(random.getrandbits(1)):
textRectObj.left += distanceToJump
else:
textRectObj.left -= distanceToJump
else:
if bool(random.getrandbits(1)):
textRectObj.top += distanceToJump
else:
textRectObj.top -= distanceToJump
validLocation = self.validTextRectLocation(textRectObj)
self.wordRectList.append(textRectObj)
self.drawer.drawWord(textSurfaceObj, textRectObj)
return True
def placeInitialWord(self, word, wordNumber):
textSurfaceObj, textRectObj = self.drawer.createTextRects(word[0], self.getWordSize(wordNumber))
textRectObj.center = (random.randrange(0, self.windowHeight), random.randrange(0, self.windowWidth))
validLocation = self.validTextRectLocation(textRectObj)
while validLocation:
textRectObj.center = (random.randrange(0, self.windowHeight), random.randrange(0, self.windowWidth))
validLocation = self.validTextRectLocation(textRectObj)
self.wordRectList.append(textRectObj)
self.drawer.drawWord(textSurfaceObj, textRectObj)
return True
def validTextRectLocation(self, textRectObj):
for textRect in self.wordRectList:
if textRect.colliderect(textRectObj):
return 1
if self.wordCloudContainerRect.contains(textRectObj):
return 0
else:
return 2
def getWordSize(self, wordNumber):
fontSize = int(math.floor(50 - (wordNumber * wordNumber)/10))
if fontSize < 15:
fontSize = 15
return fontSize