84 lines
3.4 KiB
Python
84 lines
3.4 KiB
Python
import bpy
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from .constants import image_name, image_width, image_height
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import numpy as np
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from .libs.PIL import Image
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import mathutils
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from timeit import default_timer as timer
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def apply_color():
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start = timer()
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context = bpy.context
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paint_buffer = bpy.data.images.get(image_name)
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normal_buffer = context.scene.normal_texture_settings.texture
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custom_collection = context.scene.texture_collection_settings
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normal_color = context.scene.normal_color_global
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returnValue = -1
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if paint_buffer:
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# apply normal color
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if normal_buffer and normal_color != mathutils.Vector((1.0, 1.0, 1.0)):
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if paint_buffer.size[0] == normal_buffer.size[0] and paint_buffer.size[1] == normal_buffer.size[1]:
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# create arrays
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paint_mask_pixels = np.empty(len(paint_buffer.pixels), dtype=np.float32)
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paint_buffer.pixels.foreach_get(paint_mask_pixels)
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paint_mask_pixels = (paint_mask_pixels * 255).astype(np.uint8)
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target_pixels = np.empty(len(normal_buffer.pixels), dtype=np.float32)
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normal_buffer.pixels.foreach_get(target_pixels)
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target_pixels = (target_pixels * 255).astype(np.uint8)
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new_pixels = np.tile((np.array([*normal_color, 1.0], dtype=np.float32) * 255), (image_width * image_height, 1)).astype(np.uint8)
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# Convert arrays to PIL Images
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paint_mask_image = Image.frombuffer('RGBA', (image_width, image_height), paint_mask_pixels, 'raw', 'RGBA', 0, 1)
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target_image = Image.frombuffer('RGBA', (image_width, image_height), target_pixels, 'raw', 'RGBA', 0, 1)
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new_image = Image.frombuffer('RGBA', (image_width, image_height), new_pixels, 'raw', 'RGBA', 0, 1)
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r_mask, g_mask, b_mask, a_mask = paint_mask_image.split() # separates the channels
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paint_mask_image = Image.merge("RGBA", (r_mask, g_mask, b_mask, r_mask)) # replace alpha with red
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# Blend buffers
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blended_image = Image.composite(new_image, target_image, paint_mask_image)
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# Convert blended image back to numpy array and normalize
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blended_pixels = np.array(blended_image, dtype=np.uint8).astype(np.float32) / 255.0
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# Save texture
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normal_buffer.pixels.foreach_set(blended_pixels.ravel())
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normal_buffer.update()
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print("Color applied")
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returnValue = 0
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else:
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print("Texture sizes don't match")
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returnValue = -1
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else:
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print("no normal buffer selected")
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returnValue = -1
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# reset paint buffer
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reset_pixels = np.empty(len(paint_buffer.pixels), dtype=np.float32)
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reset_pixels[0::4] = 0 # R
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reset_pixels[1::4] = 0 # G
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reset_pixels[2::4] = 0 # B
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reset_pixels[3::4] = 1 # A
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paint_buffer.pixels.foreach_set(reset_pixels)
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paint_buffer.update()
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else:
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print("Texture 'vPainter_buffer' not found")
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returnValue = -1
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end = timer()
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print(f"Time taken to apply color: {end - start:.6f} seconds")
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return returnValue
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def register():
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bpy.utils.register_class(VPAINTER_OT_apply_color)
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def unregister():
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bpy.utils.unregister_class(VPAINTER_OT_apply_color) |