Initial commit
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Zhongwei Li
312
skills/slack-gif-creator/templates/zoom.py
Executable file
312
skills/slack-gif-creator/templates/zoom.py
Executable file
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#!/usr/bin/env python3
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"""
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Zoom Animation - Scale objects dramatically for emphasis.
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Creates zoom in, zoom out, and dramatic scaling effects.
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"""
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import sys
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from pathlib import Path
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import math
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sys.path.append(str(Path(__file__).parent.parent))
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from PIL import Image, ImageFilter
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from core.gif_builder import GIFBuilder
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from core.frame_composer import create_blank_frame, draw_emoji_enhanced
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from core.easing import interpolate
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def create_zoom_animation(
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object_type: str = 'emoji',
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object_data: dict | None = None,
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num_frames: int = 30,
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zoom_type: str = 'in', # 'in', 'out', 'in_out', 'punch'
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scale_range: tuple[float, float] = (0.1, 2.0),
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easing: str = 'ease_out',
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add_motion_blur: bool = False,
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center_pos: tuple[int, int] = (240, 240),
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frame_width: int = 480,
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frame_height: int = 480,
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bg_color: tuple[int, int, int] = (255, 255, 255)
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) -> list[Image.Image]:
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"""
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Create zoom animation.
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Args:
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object_type: 'emoji', 'text', 'image'
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object_data: Object configuration
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num_frames: Number of frames
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zoom_type: Type of zoom effect
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scale_range: (start_scale, end_scale) tuple
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easing: Easing function
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add_motion_blur: Add blur for speed effect
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center_pos: Center position
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frame_width: Frame width
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frame_height: Frame height
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bg_color: Background color
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Returns:
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List of frames
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"""
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frames = []
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# Default object data
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if object_data is None:
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if object_type == 'emoji':
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object_data = {'emoji': '🔍', 'size': 100}
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base_size = object_data.get('size', 100) if object_type == 'emoji' else object_data.get('font_size', 60)
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start_scale, end_scale = scale_range
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for i in range(num_frames):
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t = i / (num_frames - 1) if num_frames > 1 else 0
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# Calculate scale based on zoom type
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if zoom_type == 'in':
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scale = interpolate(start_scale, end_scale, t, easing)
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elif zoom_type == 'out':
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scale = interpolate(end_scale, start_scale, t, easing)
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elif zoom_type == 'in_out':
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if t < 0.5:
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scale = interpolate(start_scale, end_scale, t * 2, easing)
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else:
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scale = interpolate(end_scale, start_scale, (t - 0.5) * 2, easing)
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elif zoom_type == 'punch':
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# Quick zoom in with overshoot then settle
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if t < 0.3:
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scale = interpolate(start_scale, end_scale * 1.2, t / 0.3, 'ease_out')
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else:
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scale = interpolate(end_scale * 1.2, end_scale, (t - 0.3) / 0.7, 'elastic_out')
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else:
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scale = interpolate(start_scale, end_scale, t, easing)
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# Create frame
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frame = create_blank_frame(frame_width, frame_height, bg_color)
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if object_type == 'emoji':
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current_size = int(base_size * scale)
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# Clamp size to reasonable bounds
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current_size = max(12, min(current_size, frame_width * 2))
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# Create emoji on transparent background
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canvas_size = max(frame_width, frame_height, current_size) * 2
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emoji_canvas = Image.new('RGBA', (canvas_size, canvas_size), (0, 0, 0, 0))
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draw_emoji_enhanced(
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emoji_canvas,
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emoji=object_data['emoji'],
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position=(canvas_size // 2 - current_size // 2, canvas_size // 2 - current_size // 2),
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size=current_size,
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shadow=False
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)
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# Optional motion blur for fast zooms
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if add_motion_blur and abs(scale - 1.0) > 0.5:
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blur_amount = min(5, int(abs(scale - 1.0) * 3))
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emoji_canvas = emoji_canvas.filter(ImageFilter.GaussianBlur(blur_amount))
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# Crop to frame size centered
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left = (canvas_size - frame_width) // 2
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top = (canvas_size - frame_height) // 2
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emoji_cropped = emoji_canvas.crop((left, top, left + frame_width, top + frame_height))
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# Composite
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frame_rgba = frame.convert('RGBA')
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frame = Image.alpha_composite(frame_rgba, emoji_cropped)
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frame = frame.convert('RGB')
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elif object_type == 'text':
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from core.typography import draw_text_with_outline
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current_size = int(base_size * scale)
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current_size = max(10, min(current_size, 500))
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# Create oversized canvas for large text
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canvas_size = max(frame_width, frame_height, current_size * 10)
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text_canvas = Image.new('RGB', (canvas_size, canvas_size), bg_color)
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draw_text_with_outline(
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text_canvas,
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text=object_data.get('text', 'ZOOM'),
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position=(canvas_size // 2, canvas_size // 2),
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font_size=current_size,
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text_color=object_data.get('text_color', (0, 0, 0)),
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outline_color=object_data.get('outline_color', (255, 255, 255)),
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outline_width=max(2, int(current_size * 0.05)),
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centered=True
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)
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# Crop to frame
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left = (canvas_size - frame_width) // 2
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top = (canvas_size - frame_height) // 2
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frame = text_canvas.crop((left, top, left + frame_width, top + frame_height))
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frames.append(frame)
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return frames
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def create_explosion_zoom(
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emoji: str = '💥',
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num_frames: int = 20,
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frame_width: int = 480,
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frame_height: int = 480,
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bg_color: tuple[int, int, int] = (255, 255, 255)
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) -> list[Image.Image]:
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"""
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Create dramatic explosion zoom effect.
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Args:
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emoji: Emoji to explode
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num_frames: Number of frames
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frame_width: Frame width
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frame_height: Frame height
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bg_color: Background color
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Returns:
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List of frames
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"""
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frames = []
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for i in range(num_frames):
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t = i / (num_frames - 1) if num_frames > 1 else 0
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# Exponential zoom
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scale = 0.1 * math.exp(t * 5)
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# Add rotation for drama
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angle = t * 360 * 2
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frame = create_blank_frame(frame_width, frame_height, bg_color)
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current_size = int(100 * scale)
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current_size = max(12, min(current_size, frame_width * 3))
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# Create emoji
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canvas_size = max(frame_width, frame_height, current_size) * 2
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emoji_canvas = Image.new('RGBA', (canvas_size, canvas_size), (0, 0, 0, 0))
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draw_emoji_enhanced(
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emoji_canvas,
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emoji=emoji,
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position=(canvas_size // 2 - current_size // 2, canvas_size // 2 - current_size // 2),
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size=current_size,
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shadow=False
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)
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# Rotate
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emoji_canvas = emoji_canvas.rotate(angle, center=(canvas_size // 2, canvas_size // 2), resample=Image.BICUBIC)
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# Add motion blur for later frames
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if t > 0.5:
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blur_amount = int((t - 0.5) * 10)
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emoji_canvas = emoji_canvas.filter(ImageFilter.GaussianBlur(blur_amount))
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# Crop and composite
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left = (canvas_size - frame_width) // 2
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top = (canvas_size - frame_height) // 2
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emoji_cropped = emoji_canvas.crop((left, top, left + frame_width, top + frame_height))
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frame_rgba = frame.convert('RGBA')
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frame = Image.alpha_composite(frame_rgba, emoji_cropped)
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frame = frame.convert('RGB')
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frames.append(frame)
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return frames
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def create_mind_blown_zoom(
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emoji: str = '🤯',
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num_frames: int = 30,
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frame_width: int = 480,
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frame_height: int = 480,
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bg_color: tuple[int, int, int] = (255, 255, 255)
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) -> list[Image.Image]:
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"""
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Create "mind blown" dramatic zoom with shake.
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Args:
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emoji: Emoji to use
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num_frames: Number of frames
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frame_width: Frame width
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frame_height: Frame height
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bg_color: Background color
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Returns:
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List of frames
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"""
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frames = []
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for i in range(num_frames):
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t = i / (num_frames - 1) if num_frames > 1 else 0
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# Zoom in then shake
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if t < 0.5:
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scale = interpolate(0.3, 1.2, t * 2, 'ease_out')
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shake_x = 0
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shake_y = 0
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else:
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scale = 1.2
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# Shake intensifies
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shake_intensity = (t - 0.5) * 40
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shake_x = int(math.sin(t * 50) * shake_intensity)
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shake_y = int(math.cos(t * 45) * shake_intensity)
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frame = create_blank_frame(frame_width, frame_height, bg_color)
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current_size = int(100 * scale)
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center_x = frame_width // 2 + shake_x
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center_y = frame_height // 2 + shake_y
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emoji_canvas = Image.new('RGBA', (frame_width, frame_height), (0, 0, 0, 0))
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draw_emoji_enhanced(
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emoji_canvas,
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emoji=emoji,
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position=(center_x - current_size // 2, center_y - current_size // 2),
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size=current_size,
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shadow=False
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)
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frame_rgba = frame.convert('RGBA')
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frame = Image.alpha_composite(frame_rgba, emoji_canvas)
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frame = frame.convert('RGB')
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frames.append(frame)
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return frames
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# Example usage
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if __name__ == '__main__':
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print("Creating zoom animations...")
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builder = GIFBuilder(width=480, height=480, fps=20)
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# Example 1: Zoom in
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frames = create_zoom_animation(
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object_type='emoji',
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object_data={'emoji': '🔍', 'size': 100},
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num_frames=30,
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zoom_type='in',
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scale_range=(0.1, 1.5),
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easing='ease_out'
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)
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builder.add_frames(frames)
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builder.save('zoom_in.gif', num_colors=128)
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# Example 2: Explosion zoom
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builder.clear()
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frames = create_explosion_zoom(emoji='💥', num_frames=20)
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builder.add_frames(frames)
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builder.save('zoom_explosion.gif', num_colors=128)
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# Example 3: Mind blown
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builder.clear()
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frames = create_mind_blown_zoom(emoji='🤯', num_frames=30)
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builder.add_frames(frames)
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builder.save('zoom_mind_blown.gif', num_colors=128)
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print("Created zoom animations!")
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