68 lines
2.9 KiB
Python
68 lines
2.9 KiB
Python
### Light Source
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import numpy as np
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from enum import Enum
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class LightPosition(Enum):
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LEFT = "Left Light"
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RIGHT = "Right Light"
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TOP = "Top Light"
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BOTTOM = "Bottom Light"
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TOP_LEFT = "Top Left Light"
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TOP_RIGHT = "Top Right Light"
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BOTTOM_LEFT = "Bottom Left Light"
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BOTTOM_RIGHT = "Bottom Right Light"
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def generate_gradient_image(width:int, height:int, start_color: tuple, end_color: tuple, multiplier: float, lightPosition:LightPosition):
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"""
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Generate a gradient image with a light source effect.
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Parameters:
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width (int): Width of the image.
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height (int): Height of the image.
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start_color: Starting color RGB of the gradient.
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end_color: Ending color RGB of the gradient.
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multiplier: Weight of light.
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lightPosition (LightPosition): Position of the light source.
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Returns:
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np.array: 2D gradient image array.
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"""
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# Create a gradient from 0 to 1 and apply multiplier
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if lightPosition == LightPosition.LEFT:
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gradient = np.tile(np.linspace(0, 1, width)**multiplier, (height, 1))
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elif lightPosition == LightPosition.RIGHT:
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gradient = np.tile(np.linspace(1, 0, width)**multiplier, (height, 1))
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elif lightPosition == LightPosition.TOP:
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gradient = np.tile(np.linspace(0, 1, height)**multiplier, (width, 1)).T
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elif lightPosition == LightPosition.BOTTOM:
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gradient = np.tile(np.linspace(1, 0, height)**multiplier, (width, 1)).T
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elif lightPosition == LightPosition.BOTTOM_RIGHT:
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x = np.linspace(1, 0, width)**multiplier
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y = np.linspace(1, 0, height)**multiplier
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x_mesh, y_mesh = np.meshgrid(x, y)
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gradient = np.sqrt(x_mesh**2 + y_mesh**2) / np.sqrt(2.0)
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elif lightPosition == LightPosition.BOTTOM_LEFT:
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x = np.linspace(0, 1, width)**multiplier
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y = np.linspace(1, 0, height)**multiplier
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x_mesh, y_mesh = np.meshgrid(x, y)
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gradient = np.sqrt(x_mesh**2 + y_mesh**2) / np.sqrt(2.0)
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elif lightPosition == LightPosition.TOP_RIGHT:
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x = np.linspace(1, 0, width)**multiplier
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y = np.linspace(0, 1, height)**multiplier
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x_mesh, y_mesh = np.meshgrid(x, y)
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gradient = np.sqrt(x_mesh**2 + y_mesh**2) / np.sqrt(2.0)
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elif lightPosition == LightPosition.TOP_LEFT:
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x = np.linspace(0, 1, width)**multiplier
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y = np.linspace(0, 1, height)**multiplier
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x_mesh, y_mesh = np.meshgrid(x, y)
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gradient = np.sqrt(x_mesh**2 + y_mesh**2) / np.sqrt(2.0)
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else:
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raise ValueError(f"Unsupported position. Choose from {', '.join([member.value for member in LightPosition])}.")
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# Interpolate between start_color and end_color based on the gradient
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gradient_img = np.zeros((height, width, 3), dtype=np.float32)
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for i in range(3):
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gradient_img[..., i] = start_color[i] + (end_color[i] - start_color[i]) * gradient
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gradient_img = np.clip(gradient_img, 0, 255).astype(np.uint8)
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return gradient_img |