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main.py
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main.py
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from kivy.app import App
from kivy.core.window import Window
from kivy.uix.slider import Slider
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.uix.image import Image as KivyImage, CoreImage
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.colorpicker import ColorPicker
from kivy.clock import Clock
from kivy.graphics.texture import Texture
import numpy as np
from PIL import Image
from io import BytesIO
from perlin import PerlinNoiseFactory
from functools import partial
from threading import Thread
W, H = 1024, 512
NOISE_SCALE = 5
NOISE_OFFSET = 10
OCTAVES = 2
def remap(value, oldMin, oldMax, newMin, newMax):
return ((value - oldMin) * (newMax - newMin)) / (oldMax - oldMin) + newMin
class RenderThread(Thread):
def __init__(self, app):
Thread.__init__(self)
self.app = app
self.noise = PerlinNoiseFactory(2, octaves=OCTAVES, unbias=True)
self.rawData = np.zeros((H, W), dtype=np.uint8)
def run(self):
data = np.zeros((H, W, 3), dtype=np.uint8)
data[0:H, 0:W] = [255, 255, 255]
for x in range(H):
for y in range(W):
value = remap(self.noise(NOISE_OFFSET + x / W * NOISE_SCALE, NOISE_OFFSET + y / H * NOISE_SCALE), -1, 1, 0, 255)
self.rawData[x, y] = value
set = False
for i, r in enumerate(self.app.ranges):
if value <= r:
data[x, y] = self.app.colors[i]
set = True
break
if not set:
data[x, y] = self.app.colors[-1]
self.app._draw(data)
def update(self, value):
if self.app.updating:
return
self.app.updating = True
data = np.zeros((H, W, 3), dtype=np.uint8)
for x in range(H):
for y in range(W):
set = False
for i, r in enumerate(self.app.ranges):
if self.rawData[x, y] <= r:
data[x, y] = self.app.colors[i]
set = True
break
if not set:
data[x, y] = self.app.colors[-1]
self.app._draw(data)
class MyApp(App):
def build(self):
self.updating = False
self.pickingColor = False
self.ranges = np.linspace(0, 255, 5)[1:4]
self.colors = [
[255, 0, 0],
[0, 255, 0],
[0, 0, 255],
[0, 255, 255]
]
self.layout = FloatLayout(size=(W, H * 1.25))
self.range1 = Slider(min=0, max=255, value=int(self.ranges[0]), pos=(-20, 30), size_hint=(0.5, .05), ids={"idx": "0"})
self.range2 = Slider(min=0, max=255, value=int(self.ranges[1]), pos=(-20, 70), size_hint=(0.5, .05), ids={"idx": "1"})
self.range3 = Slider(min=0, max=255, value=int(self.ranges[2]), pos=(-20, 110), size_hint=(0.5, .05), ids={"idx": "2"})
self.range1.bind(value=self.updateRange)
self.range2.bind(value=self.updateRange)
self.range3.bind(value=self.updateRange)
self.display = KivyImage(size_hint=(1, 0.75), pos_hint={ 'y': 0.25 })
#self._generate(5)
self.renderThread.start()
self.layout.add_widget(self.display)
self.layout.add_widget(self.range1)
self.layout.add_widget(self.range2)
self.layout.add_widget(self.range3)
self.layout.add_widget(Label(text='Range 1', pos=(W / 2 + 20, 30), size_hint=(0, .05)))
self.layout.add_widget(Label(text='Range 2', pos=(W / 2 + 20, 70), size_hint=(0, .05)))
self.layout.add_widget(Label(text='Range 3', pos=(W / 2 + 20, 110), size_hint=(0, .05)))
self.layout.add_widget(Button(text='Pick Color 1', pos=(W / 2 + 80, 10), size_hint=(.1, .05), on_press=self.togglePicker, background_color=self.colors[0], background_normal=''))
self.layout.add_widget(Button(text='Pick Color 2', pos=(W / 2 + 80, 50), size_hint=(.1, .05), on_press=self.togglePicker, background_color=self.colors[1], background_normal=''))
self.layout.add_widget(Button(text='Pick Color 3', pos=(W / 2 + 80, 90), size_hint=(.1, .05), on_press=self.togglePicker, background_color=self.colors[2], background_normal=''))
self.layout.add_widget(Button(text='Pick Color 4', pos=(W / 2 + 80, 130), size_hint=(.1, .05), on_press=self.togglePicker, background_color=self.colors[3], background_normal=''))
self.layout.add_widget(Button(text='Update', pos=(W * 0.75, 70), size_hint=(.1, .05), on_press=self.renderThread.update))
return self.layout
def _draw(self, data):
img = Image.fromarray(data, 'RGB')
imgBytes = BytesIO()
img.save(imgBytes, format='png')
imgBytes.seek(0)
self.display.texture = CoreImage(BytesIO(imgBytes.read()), ext='png').texture
Clock.schedule_once(partial(self.do_blit, img.tobytes(), W, H))
def do_blit(self, buf, w, h, dt):
texture = Texture(0, 0, 0).create(size=(w, h), colorfmt="bgr")
texture.blit_buffer(buf, colorfmt='rgb', bufferfmt='ubyte')
self.display.texture = texture
self.updating = False
def togglePicker(self, button):
if button.text == 'Close':
color = self.picker.color
#color = np.array(color[0:3]) * 255
self.colors[int(self.pickingColor) - 1] = (np.array(color[0:3]) * 255).astype(int)
button.background_color = color
self.layout.remove_widget(self.picker)
button.text = 'Pick Color ' + self.pickingColor
self.pickingColor = False
return
if self.pickingColor:
return
self.pickingColor = button.text[-1:]
button.text = "Close"
self.picker = ColorPicker()
self.layout.add_widget(self.picker)
def updateRange(self, slider, value):
self.ranges[int(slider.ids["idx"])] = value
def main():
app = MyApp()
thread = RenderThread(app)
app.renderThread = thread
Window.size = (W, H * 1.3)
app.run()
if __name__ == '__main__':
main()