export declare const ver_pre = "\nvarying highp vec2 vUv;\nvarying vec3 vWorldPosition;\nvarying vec3 vViewDirection;\n";
export declare const ver = "\n#include <begin_vertex>\n\nvec4 worldPosition1 = modelMatrix * vec4(position, 1.0);\nvWorldPosition = worldPosition1.xyz;\n    // \u8BA1\u7B97\u89C6\u7EBF\u65B9\u5411\uFF08\u4ECE\u9876\u70B9\u6307\u5411\u76F8\u673A\uFF09\nvViewDirection = normalize(cameraPosition - worldPosition1.xyz);\n";
export declare const frag_pre = "\nvarying highp vec2 vUv;\nvarying vec3 vWorldPosition;\nuniform float progress;\nuniform float objSize;\nuniform bool isFadeIn;\nuniform vec3 center;\n";
export declare const frag = "\n#include <map_fragment>\nvec3 myWorldPosition = vWorldPosition / objSize;\n\nif (progress == 0.0) {\n    diffuseColor.w = 0.0;\n} else if (progress == 1.0) {\n   \n} else{\nif (isFadeIn) {\n    float circle1 = step(distance(center / objSize, myWorldPosition), progress - 0.002);\n    float circle2 = step(distance(center / objSize, myWorldPosition), progress);\n\n    diffuseColor.xyz += vec3(circle2 - circle1) * 3.;\n    diffuseColor.w *= circle2;\n} else {\n    float circle = step(distance(center / objSize, myWorldPosition), progress);\n    diffuseColor.w *= step(circle, 0.);\n}\n}\n\n";
declare const RealFadeObjS: {
    ver_pre: string;
    ver: string;
    frag_pre: string;
    frag: string;
};
export default RealFadeObjS;