80 lines
3.0 KiB
JavaScript
80 lines
3.0 KiB
JavaScript
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//动态墙材质
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function DynamicWallMaterialProperty(options) {
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// 默认参数设置
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this._definitionChanged = new Cesium.Event();
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this._color = undefined;
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this._colorSubscription = undefined;
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this.color = options.color;
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this.duration = options.duration;
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this.trailImage = options.trailImage;
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this._time = (new Date()).getTime();
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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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color: Cesium.createPropertyDescriptor('color')
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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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result.color = Cesium.Property.getValueOrClonedDefault(this._color, time, Cesium.Color.WHITE, result.color);
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if (this.trailImage) {
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result.image = this.trailImage;
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} else {
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result.image = Cesium.Material.DynamicWallImage
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}
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if (this.duration) {
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result.time = (((new Date()).getTime() - this._time) % this.duration) / this.duration;
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}
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viewer.scene.requestRender();
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return result;
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};
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DynamicWallMaterialProperty.prototype.equals = function(other) {
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return this === other ||
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(other instanceof DynamicWallMaterialProperty &&
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Cesium.Property.equals(this._color, other._color))
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};
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Cesium.DynamicWallMaterialProperty = DynamicWallMaterialProperty;
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Cesium.Material.DynamicWallType = 'DynamicWall';
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Cesium.Material.DynamicWallImage = "../../images/colors1.png";
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Cesium.Material.DynamicWallSource = "czm_material czm_getMaterial(czm_materialInput materialInput)\n\
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{\n\
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czm_material material = czm_getDefaultMaterial(materialInput);\n\
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vec2 st = materialInput.st;\n\
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vec4 colorImage = texture2D(image, vec2(fract(st.t - time), st.t));\n\
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vec4 fragColor;\n\
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fragColor.rgb = color.rgb / 1.0;\n\
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fragColor = czm_gammaCorrect(fragColor);\n\
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material.alpha = colorImage.a * color.a;\n\
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material.diffuse = color.rgb;\n\
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material.emission = fragColor.rgb;\n\
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return material;\n\
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}";
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Cesium.Material._materialCache.addMaterial(Cesium.Material.DynamicWallType, {
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fabric: {
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type: Cesium.Material.DynamicWallType,
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uniforms: {
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color: new Cesium.Color(1.0, 1.0, 1.0, 1),
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image: Cesium.Material.DynamicWallImage,
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time: 0
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},
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source: Cesium.Material.DynamicWallSource
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},
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translucent: function(material) {
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return true;
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}
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});
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