Which light types can a shadow generator be used?

[JCPalmer]

In shadowGenerator.getTransformMatrix(), the light specified in the constructor has the method _computeTransformedPosition() called. 

 

The only light class that has this method is BABYLON.DirectionalLight (Sun in Blender terminology).  All light classes inherit from BABYLON.Light.  Might this getTransformMatrix() function only be called based on shadow map type(std or variance)?

 

I specified the following BABYLON.SpotLight to have a shadow generator:

 

function defineLights(scene){

    var light = new BABYLON.SpotLight("Lamp", new BABYLON.Vector3(-9,7,-10), new BABYLON.Vector3(0.5934,-0.4616,0.6594), 0.0175, 2, scene);
    light.id = "Lamp";
    light.intensity = 1;
    light.diffuse = new BABYLON.Color3(1,1,0.9);
    light.specular = new BABYLON.Color3(1,1,0.9);
}

 

The generator is specified after the mesh in the renderlist is also instanced here:

function defineShadowGen(scene){
    var light;
    var shadowGenerator;
    var renderList;
    light = scene.getLightByID("Lamp");

    shadowGenerator = new BABYLON.ShadowGenerator(512, light);
    shadowGenerator.useVarianceShadowMap = false;
    renderList = shadowGenerator.getShadowMap().renderList;
    renderList.push(scene.getMeshByID("myMesh"));
}

 

I get:

TypeError: this._light._computeTransformedPosition is not a function

 

SpotLights have both position and direction.  Am I missing something?  Thanks

 

Jeff

[JCPalmer]

Ok I switched to Directional (sun) and no error.  Still no shadow yet, but I need to double check the recievers.

 

function defineLights(scene){
    var  light = new BABYLON.DirectionalLight("Lamp", new BABYLON.Vector3(0.5934,-0.4616,0.6594), scene);
    light.position = new BABYLON.Vector3(-9,7,-10);
    light.id = "Lamp";
    light.intensity = 1;
    light.diffuse = new BABYLON.Color3(1,1,0.9);
    light.specular = new BABYLON.Color3(1,1,0.9);
}

[GameMonetize]

Yep I confirm: only directional lights cast shadows

[GameMonetize]

https://github.com/BabylonJS/Babylon.js/wiki/17-Shadows