From 7308cd28729cf5c5dd864c755a6d2c02bd0c3b4e Mon Sep 17 00:00:00 2001
From: ChoeunKim <115697121+ChoeunKim@users.noreply.github.com>
Date: Sat, 9 Dec 2023 21:02:44 +0900
Subject: [PATCH] Feat: blackGradation

---
 src/PIL/blackGradation.py | 52 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 src/PIL/blackGradation.py

diff --git a/src/PIL/blackGradation.py b/src/PIL/blackGradation.py
new file mode 100644
index 000000000..2d1333b35
--- /dev/null
+++ b/src/PIL/blackGradation.py
@@ -0,0 +1,52 @@
+from PIL import Image, ImageDraw
+
+class GradationFilter:
+    def __init__(self, image_path):
+        self.original_image = Image.open(image_path)
+
+    def apply_gradation_filter(self, start_color, end_color, input_alpha=0.5):
+        alpha_mask = self.original_image.convert("L").point(lambda x: 0 if x == 0 else 255)
+        self.original_image.putalpha(alpha_mask)
+
+        width, height = self.original_image.size
+        grad_image = self.visual_gradation(width, height, start_color, end_color)
+
+        result_image = Image.alpha_composite(Image.new("RGBA", self.original_image.size, (0, 0, 0, 0)), grad_image)
+        result_image.paste(self.original_image, (0, 0), self.original_image)
+
+        return result_image
+
+    def visual_gradation(self, width, height, start, end):
+        image = Image.new("RGBA", (width, height), (0, 0, 0, 0))
+
+        draw = ImageDraw.Draw(image)
+        for x in range(width):
+            for y in range(height):
+                alpha = int((1.0 - x / width) * 255)
+                color = start + (alpha,)
+                image.putpixel((x, y), color)
+
+        return image
+
+    @staticmethod
+    def hex_to_rgb(hex_color):
+        return tuple(int(hex_color[i:i+2], 16) for i in (0, 2, 4))
+
+try:
+    image_path = "Gradation/60D2151A-A12A-4F89-9D79-D7FD5DBEA4C4.png"
+    
+    gradation_filter = GradationFilter(image_path)
+
+    start_color_input = input("Enter start color (hex): ")
+    start_color = GradationFilter.hex_to_rgb(start_color_input)
+
+    end_color_input = input("Enter end color (hex): ")
+    end_color = GradationFilter.hex_to_rgb(end_color_input)
+
+    filtered_image = gradation_filter.apply_gradation_filter(start_color, end_color)
+    filtered_image.show()
+
+except IOError:
+    print("Error: Not a PNG file.")
+except Exception as e:
+    print(f"An unexpected error occurred: {e}")