50 lines
1.9 KiB
Python
50 lines
1.9 KiB
Python
from arcade import ShapeElementList
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from arcade.buffered_draw_commands import create_line
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def isometric_grid_to_screen(tile_x, tile_y, width, height, tile_width, tile_height):
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screen_x = tile_width * tile_x // 2 + height * tile_width // 2 - tile_y * tile_width // 2
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screen_y = (height - tile_y - 1) * tile_height // 2 + width * tile_height // 2 - tile_x * tile_height // 2
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return screen_x, screen_y
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def screen_to_isometric_grid(screen_x, screen_y, width, height, tile_width, tile_height):
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x2 = (1 / tile_width * screen_x / 2 - 1 / tile_height * screen_y / 2 + width / 2) * 2 - (width / 2 + 0.5)
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y2 = (height - 1) - ((1 / tile_width * screen_x / 2 + 1 / tile_height * screen_y / 2) * 2 - (width / 2 + 0.5))
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x2 = round(x2)
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y2 = round(y2)
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return x2, y2
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def create_isometric_grid_lines(width, height, tile_width, tile_height, color, line_width):
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# Grid lines 1
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shape_list = ShapeElementList()
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for tile_row in range(-1, height):
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tile_x = 0
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start_x, start_y = isometric_grid_to_screen(tile_x, tile_row, width, height, tile_width, tile_height)
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tile_x = width - 1
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end_x, end_y = isometric_grid_to_screen(tile_x, tile_row, width, height, tile_width, tile_height)
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start_x -= tile_width // 2
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end_y -= tile_height // 2
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line = create_line(start_x, start_y, end_x, end_y, color, line_width=line_width)
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shape_list.append(line)
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# Grid lines 2
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for tile_column in range(-1, width):
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tile_y = 0
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start_x, start_y = isometric_grid_to_screen(tile_column, tile_y, width, height, tile_width, tile_height)
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tile_y = height - 1
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end_x, end_y = isometric_grid_to_screen(tile_column, tile_y, width, height, tile_width, tile_height)
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start_x += tile_width // 2
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end_y -= tile_height // 2
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line = create_line(start_x, start_y, end_x, end_y, color, line_width=line_width)
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shape_list.append(line)
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return shape_list
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