Unknown Tool

function processImage(originalImg, bloomAmount = 10, warmthLevel = 40, showOpticalGlory = 1) {
    const canvas = document.createElement('canvas');
    const width = originalImg.width;
    const height = originalImg.height;
    canvas.width = width;
    canvas.height = height;
    const ctx = canvas.getContext('2d');

    // 1. Draw the original base image
    ctx.drawImage(originalImg, 0, 0, width, height);

    // "Другая Глория" (Alternative Gloria) Effect
    // This effect creates a glowing, heavenly bloom (a visual "glory") combined with warm tones
    // and an optional optical glory interference pattern (rainbow concentric rings).

    // 2. Add Bloom (Soft heavenly glow)
    ctx.globalCompositeOperation = 'screen';
    ctx.filter = `blur(${bloomAmount}px)`;
    ctx.globalAlpha = 0.6;
    ctx.drawImage(originalImg, 0, 0, width, height);

    // 3. Add Warmth / Angelic tint
    ctx.globalCompositeOperation = 'overlay';
    ctx.filter = 'none';
    ctx.globalAlpha = parseInt(warmthLevel, 10) / 100;
    ctx.fillStyle = '#ffcc66'; // Golden warm glow
    ctx.fillRect(0, 0, width, height);
    
    // 4. Vignette (Darken the edges slightly to focus on the center glow)
    ctx.globalCompositeOperation = 'multiply';
    ctx.globalAlpha = 0.8;
    const vignetteGradient = ctx.createRadialGradient(
        width / 2, height / 2, Math.min(width, height) * 0.2,
        width / 2, height / 2, Math.min(width, height) * 0.8
    );
    vignetteGradient.addColorStop(0, 'rgba(255, 255, 255, 1)'); 
    vignetteGradient.addColorStop(1, 'rgba(160, 140, 120, 1)'); // Warm brownish edge
    ctx.fillStyle = vignetteGradient;
    ctx.fillRect(0, 0, width, height);

    // 5. Optical Glory Phenomenon (Soft interference rainbow rings)
    if (parseInt(showOpticalGlory, 10) === 1) {
        ctx.globalCompositeOperation = 'screen';
        ctx.globalAlpha = 0.25;
        const gloryRadius = Math.min(width, height) * 0.4;
        const gloryGradient = ctx.createRadialGradient(
            width / 2, height / 2, 0,
            width / 2, height / 2, gloryRadius
        );
        
        // Simulating the optical pattern of a glory (colored rings)
        gloryGradient.addColorStop(0, 'rgba(255, 255, 255, 0.8)');
        gloryGradient.addColorStop(0.15, 'rgba(255, 255, 0, 0.6)');
        gloryGradient.addColorStop(0.3, 'rgba(255, 0, 0, 0.5)');
        gloryGradient.addColorStop(0.45, 'rgba(0, 255, 0, 0.4)');
        gloryGradient.addColorStop(0.6, 'rgba(0, 0, 255, 0.3)');
        gloryGradient.addColorStop(0.8, 'rgba(255, 0, 255, 0.15)');
        gloryGradient.addColorStop(1, 'rgba(0, 0, 0, 0)');
        
        ctx.fillStyle = gloryGradient;
        ctx.beginPath();
        ctx.arc(width / 2, height / 2, gloryRadius, 0, Math.PI * 2);
        ctx.fill();
    }

    // Reset context properties to default
    ctx.globalCompositeOperation = 'source-over';
    ctx.globalAlpha = 1.0;

    return canvas;
}