120 lines
2.8 KiB
JavaScript
120 lines
2.8 KiB
JavaScript
/**
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* color（颜色）：颜色
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* speed（速度）：越低越快
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* count（条数）：分隔条数
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* freely（纵横）：vertical纵，cross横
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* direction（方向）：
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* 纵：'-'（由下到上），'+'（由上到下）
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* 横：'-'（顺时针），'+'（逆时针）
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*/
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function DynamicWallMaterialProperty(
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color,
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speed,
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count,
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freely,
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direction,
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img
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) {
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this._definitionChanged = new Cesium.Event();
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this.color = color;
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this.speed = speed;
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this.count = count;
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this.freely = freely;
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this.direction = direction;
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this.img = img;
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DynamicWallMaterialProperty.prototype.init(
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color,
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speed,
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count,
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freely,
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direction,
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img
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);
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}
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Object.defineProperties(DynamicWallMaterialProperty.prototype, {
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isConstant: {
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get: function () {
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return false;
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},
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},
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definitionChanged: {
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get: function () {
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return this._definitionChanged;
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},
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},
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});
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DynamicWallMaterialProperty.prototype.getType = function (time) {
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return "DynamicWall";
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};
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DynamicWallMaterialProperty.prototype.getValue = function (time, result) {
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if (!Cesium.defined(result)) {
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result = {};
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}
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//console.log(" this.color1", this.color);
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result.color = this.color;
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result.speed = this.speed;
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result.count = this.count;
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result.freely = this.freely;
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result.direction = this.direction;
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result.img = this.img;
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return result;
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};
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DynamicWallMaterialProperty.prototype.equals = function (other) {
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return false;
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//return this === other || (other instanceof DynamicWallMaterialProperty && Cesium.Property.equals(this._color, other._color));
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};
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DynamicWallMaterialProperty.prototype.init = function (
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color,
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speed,
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count,
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freely,
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direction,
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img
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) {
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var sourceStr =
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"czm_material czm_getMaterial(czm_materialInput materialInput)\n";
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sourceStr += "{\n";
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sourceStr += "float time = czm_frameNumber / " + speed + ";\n";
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sourceStr +=
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"czm_material material = czm_getDefaultMaterial(materialInput);\n";
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sourceStr += "vec2 st = materialInput.st;\n";
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if (freely == "vertical") {
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//（由下到上）
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sourceStr =
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sourceStr +
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"vec4 colorImage = texture2D(image, vec2(fract( " +
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count +
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"*st.t " +
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direction +
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" time), fract(st.s)));\n ";
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} else {
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//（逆时针）
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sourceStr =
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sourceStr +
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"vec4 colorImage = texture2D(image, vec2(fract( " +
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count +
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"*st.s " +
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direction +
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" time), fract(st.t)));\n ";
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}
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sourceStr += "material.diffuse = color.rgb;\n ";
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sourceStr += "material.alpha = (colorImage.a * color.a);\n ";
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sourceStr += "return material;\n";
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sourceStr += "}\n";
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var uniforms = {
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color: color,
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image: img,
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};
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Cesium.Material._materialCache.addMaterial("DynamicWall", {
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fabric: {
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type: "DynamicWall",
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uniforms: uniforms,
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source: sourceStr,
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},
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translucent: true,
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});
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};
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