export declare const fragmentShader = "\nvarying vec2 vUv;\nuniform float uSpeed;\nuniform float uTime;\nuniform vec2 uFade;\nuniform vec3 uColor;\nuniform int uNumLines;\nuniform float uOffset;\nuniform float ulength;\nuniform float uReverse;\n\nvoid main() {\n    vec3 color = uColor;\n    float s = 0.0;\n    float v = 0.0;\n    float alpha = 0.0;\n    float maxAlpha = 0.0; \n\n    s = (-uTime * uSpeed) / ulength;\n    s = mod(s, 1.0);\n\n    float direction = (uReverse == 1.0) ? 1.0 : -1.0;\n    float numLinesFloat = float(uNumLines);\n    float baseGap = 1.0 / numLinesFloat; \n    \n    float dynamicLength = min(uFade.y, baseGap * 0.7); \n    \n    float widthFactor = smoothstep(0.1, 0.5, abs(vUv.y - 0.5));\n    \n    for (int i = 0; i < uNumLines; i++) {\n        float start = float(i) / numLinesFloat;\n        start += uOffset;\n        v = vUv.x * direction + start;\n\n        float d = mod((v + s), 1.0);\n        \n        if (d <= dynamicLength) {\n            float tempAlpha = smoothstep(uFade.x, dynamicLength, d);\n            maxAlpha = max(maxAlpha, tempAlpha);\n        }\n    }\n    \n    alpha = maxAlpha * widthFactor;\n\n    if (alpha < 0.0001) {\n        discard;\n    }\n\n    gl_FragColor = vec4(color, alpha);\n}\n   ";