Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | 1x | import macro from 'vtk.js/Sources/macros';
import * as vtkMath from 'vtk.js/Sources/Common/Core/Math';
import vtkDracoReader from 'vtk.js/Sources/IO/Geometry/DracoReader';
import vtkLight from 'vtk.js/Sources/Rendering/Core/Light';
import { MIN_LIGHT_ATTENUATION } from 'vtk.js/Sources/IO/Geometry/GLTFImporter/Constants';
const { vtkWarningMacro } = macro;
/**
* Handles the KHR_materials_unlit extension.
*
* @param {object} extension - The KHR_materials_unlit extension object.
* @param {vtkProperty} property - The vtkProperty instance to update.
*/
export function handleKHRMaterialsUnlit(extension, property) {
property.setLighting(true);
}
/**
* Handles the KHR_materials_ior extension.
*
* @param {object} extension - The KHR_materials_unlit extension object.
* @param {vtkProperty} property - The vtkProperty instance to update.
*/
export function handleKHRMaterialsIor(extension, property) {
property.setBaseIOR(extension.ior);
}
/**
* Handles the KHR_materials_specular extension.
* @param {object} extension - The KHR_materials_specular extension object.
* @param {vtkProperty} property - The vtkProperty instance to update.
*/
export function handleKHRMaterialsSpecular(extension, property) {
property.setSpecular(extension.specularFactor);
property.setSpecularColor(extension.specularColorFactor);
}
/**
* Handles the KHR_lights_punctual extension.
*
* @param {object} extension - The KHR_lights_punctual extension object.
* @param {vtkRenderer} renderer - The vtkRenderer instance to add the light to.
*/
export function handleKHRLightsPunctual(extension, transformMatrix, model) {
const { light } = extension;
const { color, intensity, range, spot, type } = light;
const l = vtkLight.newInstance({
color: color || [1, 1, 1],
intensity: intensity || 1.0,
});
// Apply the global transform to the light
l.setTransformMatrix(transformMatrix);
// Handle range
if (range > 0) {
// Set quadratic values to get attenuation(range) ~= MIN_LIGHT_ATTENUATION
l.setAttenuationValues(1, 0, 1.0 / (range * range * MIN_LIGHT_ATTENUATION));
}
switch (type) {
case 'directional':
l.setPositional(false);
break;
case 'point':
l.setPositional(true);
l.setConeAngle(90);
break;
case 'spot':
l.setPositional(true);
l.setConeAngle(vtkMath.radiansFromDegrees(spot.outerConeAngle));
break;
default:
vtkWarningMacro(`Unsupported light type: ${type}`);
}
model.lights.set(light.name, l);
}
/**
* Handles the KHR_draco_mesh_compression extension.
*
* @param {object} extension - The KHR_draco_mesh_compression extension object.
*/
export async function handleKHRDracoMeshCompression(extension) {
const reader = vtkDracoReader.newInstance();
reader.parse(extension.bufferView);
return reader.getOutputData();
}
/**
* Handles the KHR_materials_variants extension.
*
* @param {object} extension - The KHR_materials_variants extension object.
* @param {object} model - The model object to update with variant information.
*/
export function handleKHRMaterialsVariants(extension, model) {
model.variants = extension.variants.map((v) => v.name);
}
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