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Refresh of Graph Element demos

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This commit is contained in:
PySimpleGUI 2019-10-13 15:14:17 -04:00
parent 52e9852c4f
commit 2c53a593fe
2 changed files with 39 additions and 10 deletions
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20
DemoPrograms/Demo_Graph_Element_Sine_Wave.py
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@ -8,18 +8,18 @@ SIZE_Y = 100
NUMBER_MARKER_FREQUENCY = 25
def draw_axis():
graph.DrawLine((-SIZE_X,0), (SIZE_X, 0)) # axis lines
graph.DrawLine((0,-SIZE_Y), (0,SIZE_Y))
graph.draw_line((-SIZE_X,0), (SIZE_X, 0)) # axis lines
graph.draw_line((0,-SIZE_Y), (0,SIZE_Y))
for x in range(-SIZE_X, SIZE_X+1, NUMBER_MARKER_FREQUENCY):
graph.DrawLine((x,-3), (x,3)) # tick marks
graph.draw_line((x,-3), (x,3)) # tick marks
if x != 0:
graph.DrawText( str(x), (x,-10), color='green') # numeric labels
graph.draw_text( str(x), (x,-10), color='green', font='Algerian 15') # numeric labels
for y in range(-SIZE_Y, SIZE_Y+1, NUMBER_MARKER_FREQUENCY):
graph.DrawLine((-3,y), (3,y))
graph.draw_line((-3,y), (3,y))
if y != 0:
graph.DrawText( str(y), (-10,y), color='blue')
graph.draw_text( str(y), (-10,y), color='blue')
# Create the graph that will be put into the window
graph = sg.Graph(canvas_size=(400, 400),
@ -30,22 +30,22 @@ graph = sg.Graph(canvas_size=(400, 400),
# Window layout
layout = [[sg.Text('Example of Using Math with a Graph', justification='center', size=(50,1), relief=sg.RELIEF_SUNKEN)],
[graph],
[sg.Text('y = sin(x / x2 * x1)', font='COURIER 18')],
[sg.Text('y = sin(x / x2 * x1)', font='Algerian 18')],
[sg.Text('x1'),sg.Slider((0,200), orientation='h', enable_events=True,key='_SLIDER_')],
[sg.Text('x2'),sg.Slider((1,200), orientation='h', enable_events=True,key='_SLIDER2_')]]
window = sg.Window('Graph of Sine Function', layout)
while True:
event, values = window.Read()
event, values = window.read()
if event is None:
break
graph.Erase()
graph.erase()
draw_axis()
prev_x = prev_y = None
for x in range(-SIZE_X,SIZE_X):
y = math.sin(x/int(values['_SLIDER2_']))*int(values['_SLIDER_'])
if prev_x is not None:
graph.DrawLine((prev_x, prev_y), (x,y), color='red')
graph.draw_line((prev_x, prev_y), (x,y), color='red')
prev_x, prev_y = x, y