Script Generation Warning Animation - 3D Voxel Learning Example

This guide walks you through how to generate a looping 3D voxel animation of a warning display using SpatialStudio. The script creates an animated warning interface with pulsing alert symbols, scrolling text, and glowing indicators inside a cubic 3D space, then saves the animation to a .splv file.

What this script does

Creates a 3D scene of size 128×128×128
Generates a warning interface with:
- Pulsing triangular warning symbols
- Scrolling "SCRIPT GENERATION" text
- Blinking alert indicators
- Glowing borders and highlights
Animates the warning display for 6 seconds at 30 FPS
Outputs the file script_generation_warning.splv that you can play in your viewer

How it works (simplified)

Voxel volume Each frame is a 3D grid filled with RGBA values (SIZE × SIZE × SIZE × 4).
Warning symbols Triangular warning icons are drawn with hollow centers and pulsing orange/red colors.
Text scrolling Letter shapes are rendered as voxel patterns that move horizontally across the display.
Alert indicators Small circular dots that blink on and off with different timing patterns.
Glow effects Bright yellow/white voxels create glowing borders and highlights around interface elements.
Animation loop A normalized time variable t cycles from 0 → 2π, ensuring smooth looping with synchronized pulsing and scrolling.
Encoding Frames are passed into splv.Encoder, which writes them into the .splv video file.

Try it yourself

Install requirements first:

pip install spatialstudio numpy tqdm

Then copy this script into script_generation_warning.py and run:

python script_generation_warning.py

Full Script

import numpy as np
from spatialstudio import splv
from tqdm import tqdm

# Scene setup
SIZE, FPS, SECONDS = 128, 30, 6
FRAMES = FPS * SECONDS
CENTER_X = CENTER_Y = CENTER_Z = SIZE // 2
OUT_PATH = "../outputs/script_generation_warning.splv"

# Warning display settings
WARNING_SYMBOL_SIZE = 12
TEXT_HEIGHT = 8
INDICATOR_COUNT = 6

def add_voxel(volume, x, y, z, color):
    if 0 <= x < SIZE and 0 <= y < SIZE and 0 <= z < SIZE:
        volume[x, y, z, :3] = color
        volume[x, y, z, 3] = 255

def generate_warning_triangle(volume, cx, cy, cz, size, intensity):
    base_color = (255, int(140 * intensity), 0)  # Orange to red
    outline_color = (255, int(200 * intensity), int(100 * intensity))
    
    # Draw triangle outline
    for i in range(size):
        # Left edge
        x1 = cx - i
        y1 = cy + size - i
        add_voxel(volume, x1, y1, cz, outline_color)
        
        # Right edge  
        x2 = cx + i
        y2 = cy + size - i
        add_voxel(volume, x2, y2, cz, outline_color)
        
        # Base
        if i < size:
            add_voxel(volume, cx - size + i, cy + size, cz, outline_color)
            add_voxel(volume, cx + size - i, cy + size, cz, outline_color)
    
    # Fill triangle with pulsing color
    for dy in range(size):
        width = dy + 1
        for dx in range(-width + 1, width):
            add_voxel(volume, cx + dx, cy + size - dy, cz, base_color)
    
    # Add exclamation mark
    excl_color = (255, 255, 255)
    for i in range(size // 2):
        add_voxel(volume, cx, cy + size - 2 - i, cz + 1, excl_color)
    add_voxel(volume, cx, cy + size, cz + 1, excl_color)

def generate_letter_pattern(letter, x_offset, y_offset, z_offset):
    """Return voxel coordinates for letter shapes"""
    patterns = {
        'S': [(0,0), (1,0), (2,0), (0,1), (1,2), (2,2), (2,3), (1,4), (0,4)],
        'C': [(0,1), (0,2), (0,3), (1,0), (1,4), (2,0), (2,4)],
        'R': [(0,0), (0,1), (0,2), (0,3), (0,4), (1,0), (1,2), (2,0), (2,1), (2,3), (2,4)],
        'I': [(0,0), (1,0), (2,0), (1,1), (1,2), (1,3), (0,4), (1,4), (2,4)],
        'P': [(0,0), (0,1), (0,2), (0,3), (0,4), (1,0), (1,2), (2,0), (2,1)],
        'T': [(0,0), (1,0), (2,0), (1,1), (1,2), (1,3), (1,4)],
        'G': [(1,0), (2,0), (0,1), (0,2), (0,3), (1,4), (2,4), (2,3), (1,2)],
        'E': [(0,0), (0,1), (0,2), (0,3), (0,4), (1,0), (1,2), (1,4), (2,0), (2,2), (2,4)],
        'N': [(0,0), (0,1), (0,2), (0,3), (0,4), (1,1), (2,2), (2,0), (2,1), (2,3), (2,4)],
        'A': [(1,0), (0,1), (2,1), (0,2), (1,2), (2,2), (0,3), (2,3), (0,4), (2,4)],
        'O': [(1,0), (0,1), (2,1), (0,2), (2,2), (0,3), (2,3), (1,4)],
    }
    
    coords = []
    if letter in patterns:
        for px, py in patterns[letter]:
            coords.append((x_offset + px, y_offset + py, z_offset))
    return coords

def generate_scrolling_text(volume, t):
    text = "SCRIPT GENERATION"
    text_color = (255, 255, 100)  # Yellow
    glow_color = (255, 255, 200)  # Bright yellow glow
    
    scroll_offset = int((t / (2*np.pi)) * 60) % 200
    start_x = SIZE - scroll_offset
    
    for i, char in enumerate(text):
        if char == ' ':
            continue
            
        char_x = start_x + i * 6
        char_y = CENTER_Y - 20
        char_z = CENTER_Z + 5
        
        if -10 < char_x < SIZE + 10:  # Only render visible characters
            coords = generate_letter_pattern(char, char_x, char_y, char_z)
            
            # Draw letters with glow effect
            for x, y, z in coords:
                add_voxel(volume, x, y, z, text_color)
                # Add glow around letters
                for gx in [-1, 0, 1]:
                    for gy in [-1, 0, 1]:
                        if gx != 0 or gy != 0:
                            glow_intensity = 0.3
                            glow_col = tuple(int(c * glow_intensity) for c in glow_color)
                            add_voxel(volume, x+gx, y+gy, z-1, glow_col)

def generate_alert_indicators(volume, t):
    indicator_color = (255, 50, 50)  # Red
    bright_color = (255, 150, 150)  # Bright red
    
    positions = [
        (20, 20, CENTER_Z), (SIZE-20, 20, CENTER_Z),
        (20, SIZE-20, CENTER_Z), (SIZE-20, SIZE-20, CENTER_Z),
        (CENTER_X-30, CENTER_Y+30, CENTER_Z), (CENTER_X+30, CENTER_Y+30, CENTER_Z)
    ]
    
    for i, (x, y, z) in enumerate(positions):
        # Different blinking patterns for each indicator
        blink_phase = (t + i * np.pi/3) % (2*np.pi)
        if np.sin(blink_phase * 4) > 0:
            color = bright_color if np.sin(blink_phase * 8) > 0.5 else indicator_color
            
            # Draw circular indicator
            for dx in range(-2, 3):
                for dy in range(-2, 3):
                    if dx*dx + dy*dy <= 4:
                        add_voxel(volume, x+dx, y+dy, z, color)

def generate_warning_border(volume, t):
    border_color = (255, 255, 0)  # Yellow
    pulse_intensity = (np.sin(t * 3) + 1) / 2  # Pulsing effect
    
    final_color = tuple(int(c * (0.5 + pulse_intensity * 0.5)) for c in border_color)
    
    # Draw border frame
    thickness = 3
    for i in range(thickness):
        # Top and bottom edges
        for x in range(SIZE):
            for z in range(CENTER_Z-2, CENTER_Z+3):
                add_voxel(volume, x, i, z, final_color)
                add_voxel(volume, x, SIZE-1-i, z, final_color)
        
        # Left and right edges  
        for y in range(SIZE):
            for z in range(CENTER_Z-2, CENTER_Z+3):
                add_voxel(volume, i, y, z, final_color)
                add_voxel(volume, SIZE-1-i, y, z, final_color)

def generate_warning_display(volume, t):
    # Main warning triangles
    pulse = (np.sin(t * 2) + 1) / 2 * 0.7 + 0.3  # Pulsing intensity
    
    # Left warning symbol
    generate_warning_triangle(volume, CENTER_X - 35, CENTER_Y - 10, CENTER_Z, 
                            WARNING_SYMBOL_SIZE, pulse)
    
    # Right warning symbol  
    generate_warning_triangle(volume, CENTER_X + 35, CENTER_Y - 10, CENTER_Z, 
                            WARNING_SYMBOL_SIZE, pulse * 0.8)
    
    # Central warning (larger)
    generate_warning_triangle(volume, CENTER_X, CENTER_Y + 10, CENTER_Z, 
                            WARNING_SYMBOL_SIZE + 4, pulse * 1.2)

def generate_scene(volume, t):
    generate_warning_border(volume, t)
    generate_warning_display(volume, t)
    generate_scrolling_text(volume, t)
    generate_alert_indicators(volume, t)

enc = splv.Encoder(SIZE, SIZE, SIZE, framerate=FPS, outputPath=OUT_PATH, motionVectors="off")

for frame in tqdm(range(FRAMES), desc="Generating warning display"):
    volume = np.zeros((SIZE, SIZE, SIZE, 4), dtype=np.uint8)
    t = (frame / FRAMES) * 2*np.pi
    generate_scene(volume, t)
    enc.encode(splv.Frame(volume, lrAxis="x", udAxis="y", fbAxis="z"))

enc.finish()
print(f"Created {OUT_PATH}")

Next steps

Change WARNING_SYMBOL_SIZE to make warning triangles larger or smaller.
Edit the text variable to display different scrolling messages.
Modify INDICATOR_COUNT and add more blinking alert positions.
Adjust pulsing speed by changing the multiplier in np.sin(t * 2).
Add sound-reactive elements by making pulse intensity respond to audio input.

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