在 2018年11月26日星期一 UTC+8下午11:32:16，Omar Shehata写道：
Are you thinking of animating the vertices of the geometry you created to have a wave-like effect? If so, I think all you need is to define a custom vertex shader, which you can do in Cesium by creating and setting a custom Appearance:
https://cesiumjs.org/Cesium/Build/Documentation/Appearance.html
On Sunday, November 25, 2018 at 9:16:34 AM UTC-5, a1941...@gmail.com wrote:Anxious, I would like to ask you, I want to use the geometry with water, but need to modify the shape of the geometry to make an animation, cesium has the way to use the entity to complete the water effect, or how to add animation to the PolygonGeometry. I hope to give me a method. Thank you.
Here is my code
var Polygon1 = viewer.scene.primitives.add(new Cesium.Primitive({
geometryInstances : new Cesium.GeometryInstance({
geometry : new Cesium.PolygonGeometry({
height:225,
perPositionHeight:true,
polygonHierarchy : new Cesium.PolygonHierarchy(
Cesium.Cartesian3.fromDegreesArray([ 106.4064348832185,29.81790653456957,106.4065351693805,29.81795172326908,106.4066721067451,29.81801532757933,106.4067767871413,29.81811023207252
])
),
vertexFormat : Cesium.EllipsoidSurfaceAppearance.VERTEX_FORMAT
})
}),
appearance : new Cesium.EllipsoidSurfaceAppearance({
aboveGround: true,
}),
show : true
}));
function applydjk_WaterMaterial(primitive, scene) {
primitive.appearance.material = new Cesium.Material({
fabric : {
type : 'Water',
uniforms : {
normalMap:'water.jpg',
frequency: 1000.0,
animationSpeed: 0.001,
amplitude: 40
}
}
});
primitive.appearance.translucent=true;
}
How to add reflection to water primitive ? Need to create a reflect camera?