795 lines
27 KiB
C++
795 lines
27 KiB
C++
#pragma once
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#include "CesiumGltf/Class.h"
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#include "CesiumGltf/ClassProperty.h"
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#include "CesiumGltf/ExtensionModelExtStructuralMetadata.h"
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#include "CesiumGltf/Model.h"
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#include "CesiumGltf/PropertyTexture.h"
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#include "CesiumGltf/PropertyTexturePropertyView.h"
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#include "CesiumGltf/TextureView.h"
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namespace CesiumGltf {
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/**
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* @brief Indicates the status of a property texture view.
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*
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* The {@link PropertyTextureView} constructor always completes successfully.
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* However it may not always reflect the actual content of the
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* {@link PropertyTexture}. This enumeration provides the reason.
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*/
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enum class PropertyTextureViewStatus {
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/**
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* @brief This property texture view is valid and ready to use.
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*/
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Valid,
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/**
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* @brief The glTF is missing the EXT_structural_metadata extension.
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*/
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ErrorMissingMetadataExtension,
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/**
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* @brief The glTF EXT_structural_metadata extension doesn't contain a schema.
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*/
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ErrorMissingSchema,
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/**
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* @brief The property texture's specified class could not be found in the
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* extension.
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*/
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ErrorClassNotFound
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};
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/**
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* @brief A view on a {@link PropertyTexture}.
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*
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* This should be used to get a {@link PropertyTexturePropertyView} of a property
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* in the property texture. It will validate the EXT_structural_metadata format
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* and
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* ensure {@link PropertyTexturePropertyView} does not access data out of bounds.
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*/
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class PropertyTextureView {
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public:
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/**
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* @brief Construct a PropertyTextureView.
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*
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* @param model The glTF that contains the property texture's data.
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* @param propertyTexture The {@link PropertyTexture}
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* from which the view will retrieve data.
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*/
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PropertyTextureView(
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const Model& model,
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const PropertyTexture& propertyTexture) noexcept;
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/**
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* @brief Gets the status of this property texture view.
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*
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* Indicates whether the view accurately reflects the property texture's data,
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* or whether an error occurred.
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*/
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PropertyTextureViewStatus status() const noexcept { return this->_status; }
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/**
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* @brief Gets the name of the property texture being viewed. Returns
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* std::nullopt if no name was specified.
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*/
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const std::optional<std::string>& name() const noexcept {
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return _pPropertyTexture->name;
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}
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/**
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* @brief Gets the {@link Class} that this property texture conforms to.
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*
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* @return A pointer to the {@link Class}. Returns nullptr if the PropertyTexture
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* did not specify a valid class.
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*/
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const Class* getClass() const noexcept { return _pClass; }
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/**
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* @brief Finds the {@link ClassProperty} that
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* describes the type information of the property with the specified id.
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* @param propertyId The id of the property to retrieve the class for.
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* @return A pointer to the {@link ClassProperty}.
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* Return nullptr if the PropertyTextureView is invalid or if no class
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* property was found.
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*/
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const ClassProperty* getClassProperty(const std::string& propertyId) const;
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/**
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* @brief Gets a {@link PropertyTexturePropertyView} that views the data of a
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* property stored in the {@link PropertyTexture}.
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*
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* This method will validate the EXT_structural_metadata format to ensure
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* {@link PropertyTexturePropertyView} retrieves the correct data. T must
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* be a scalar with a supported component type (int8_t, uint8_t, int16_t,
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* uint16_t, int32_t, uint32_t, float), a glm vecN composed of one of the
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* scalar types, or a PropertyArrayView containing one of the scalar types.
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*
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* If T does not match the type specified by the class property, this returns
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* an invalid PropertyTexturePropertyView. Likewise, if the value of
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* Normalized does not match the value of {@link ClassProperty::normalized} for that
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* class property, this returns an invalid property view. Only types with
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* integer components may be normalized.
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*
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* @tparam T The C++ type corresponding to the type of the data retrieved.
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* @tparam Normalized Whether the property is normalized. Only applicable to
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* types with integer components.
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* @param propertyId The ID of the property to retrieve data from
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* @param propertyOptions The options to apply to the property.
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* @return A {@link PropertyTexturePropertyView} of the property. If no valid
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* property is found, the property view will be invalid.
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*/
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template <typename T, bool Normalized = false>
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PropertyTexturePropertyView<T, Normalized> getPropertyView(
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const std::string& propertyId,
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const TextureViewOptions& propertyOptions = TextureViewOptions()) const {
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if (this->_status != PropertyTextureViewStatus::Valid) {
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return PropertyTexturePropertyView<T, Normalized>(
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PropertyTexturePropertyViewStatus::ErrorInvalidPropertyTexture);
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}
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const ClassProperty* pClassProperty = getClassProperty(propertyId);
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if (!pClassProperty) {
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return PropertyTexturePropertyView<T, Normalized>(
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PropertyTexturePropertyViewStatus::ErrorNonexistentProperty);
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}
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return getPropertyViewImpl<T, Normalized>(
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propertyId,
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*pClassProperty,
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propertyOptions);
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}
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/**
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* @brief Gets a {@link PropertyTexturePropertyView} through a callback that accepts a
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* property id and a {@link PropertyTexturePropertyView} that views the data
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* of the property with the specified id.
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*
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* This method will validate the EXT_structural_metadata format to ensure
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* {@link PropertyTexturePropertyView} retrieves the correct data. T must
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* be a scalar with a supported component type (int8_t, uint8_t, int16_t,
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* uint16_t, int32_t, uint32_t, float), a glm vecN composed of one of the
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* scalar types, or a PropertyArrayView containing one of the scalar types.
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*
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* If the property is somehow invalid, an empty {@link PropertyTexturePropertyView}
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* with an error status will be passed to the callback. Otherwise, a valid
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* property view will be passed to the callback.
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*
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* @param propertyId The id of the property to retrieve data from
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* @param callback A callback function that accepts a property id and a
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* {@link PropertyTexturePropertyView}
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* @param propertyOptions The options to apply to the property.
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* @tparam Callback The type of the callback function.
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*/
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template <typename Callback>
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void getPropertyView(
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const std::string& propertyId,
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Callback&& callback,
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const TextureViewOptions& propertyOptions = TextureViewOptions()) const {
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if (this->_status != PropertyTextureViewStatus::Valid) {
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callback(
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propertyId,
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PropertyTexturePropertyView<uint8_t>(
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PropertyTexturePropertyViewStatus::ErrorInvalidPropertyTexture));
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return;
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}
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const ClassProperty* pClassProperty = getClassProperty(propertyId);
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if (!pClassProperty) {
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callback(
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propertyId,
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PropertyTexturePropertyView<uint8_t>(
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PropertyTexturePropertyViewStatus::ErrorNonexistentProperty));
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return;
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}
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PropertyType type = convertStringToPropertyType(pClassProperty->type);
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PropertyComponentType componentType = PropertyComponentType::None;
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if (pClassProperty->componentType) {
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componentType =
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convertStringToPropertyComponentType(*pClassProperty->componentType);
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}
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bool normalized = pClassProperty->normalized;
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if (normalized && !isPropertyComponentTypeInteger(componentType)) {
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// Only integer components may be normalized.
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callback(
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propertyId,
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PropertyTexturePropertyView<uint8_t>(
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PropertyTexturePropertyViewStatus::ErrorInvalidNormalization));
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return;
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}
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if (pClassProperty->array) {
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if (normalized) {
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getArrayPropertyViewImpl<Callback, true>(
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propertyId,
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*pClassProperty,
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type,
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componentType,
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std::forward<Callback>(callback),
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propertyOptions);
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} else {
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getArrayPropertyViewImpl<Callback, false>(
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propertyId,
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*pClassProperty,
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type,
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componentType,
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std::forward<Callback>(callback),
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propertyOptions);
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}
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return;
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}
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if (type == PropertyType::Scalar) {
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if (normalized) {
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getScalarPropertyViewImpl<Callback, true>(
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propertyId,
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*pClassProperty,
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componentType,
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std::forward<Callback>(callback),
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propertyOptions);
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} else {
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getScalarPropertyViewImpl<Callback, false>(
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propertyId,
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*pClassProperty,
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componentType,
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std::forward<Callback>(callback),
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propertyOptions);
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}
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return;
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}
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if (isPropertyTypeVecN(type)) {
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if (normalized) {
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getVecNPropertyViewImpl<Callback, true>(
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propertyId,
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*pClassProperty,
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type,
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componentType,
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std::forward<Callback>(callback),
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propertyOptions);
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} else {
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getVecNPropertyViewImpl<Callback, false>(
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propertyId,
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*pClassProperty,
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type,
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componentType,
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std::forward<Callback>(callback),
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propertyOptions);
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}
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return;
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}
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callback(
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propertyId,
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PropertyTexturePropertyView<uint8_t>(
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PropertyTexturePropertyViewStatus::ErrorUnsupportedProperty));
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return;
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}
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/**
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* @brief Iterates over each property in the {@link PropertyTexture} with a callback
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* that accepts a property id and a {@link PropertyTexturePropertyView} to view
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* the data stored in the {@link PropertyTextureProperty}.
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*
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* This method will validate the EXT_structural_metadata format to ensure
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* {@link PropertyTexturePropertyView} retrieves the correct data. T must be
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* a scalar with a supported component type (int8_t, uint8_t, int16_t,
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* uint16_t, int32_t, uint32_t, float), a glm vecN composed of one of the
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* scalar types, or a PropertyArrayView containing one of the scalar types.
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*
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* If the property is invalid, an empty {@link PropertyTexturePropertyView} with an
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* error status will be passed to the callback. Otherwise, a valid property
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* view will be passed to the callback.
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*
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* @param callback A callback function that accepts property id and
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* {@link PropertyTexturePropertyView}
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* @param propertyOptions The options to apply to each property in the
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* property texture.
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* @tparam Callback The type of the callback function.
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*/
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template <typename Callback>
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void forEachProperty(
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Callback&& callback,
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const TextureViewOptions& propertyOptions = TextureViewOptions()) const {
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for (const auto& property : this->_pClass->properties) {
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getPropertyView(
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property.first,
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std::forward<Callback>(callback),
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propertyOptions);
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}
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}
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private:
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template <typename T, bool Normalized>
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PropertyTexturePropertyView<T, Normalized> getPropertyViewImpl(
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const std::string& propertyId,
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const ClassProperty& classProperty,
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const TextureViewOptions& propertyOptions) const {
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auto propertyTexturePropertyIter =
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_pPropertyTexture->properties.find(propertyId);
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if (propertyTexturePropertyIter == _pPropertyTexture->properties.end()) {
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if (!classProperty.required && classProperty.defaultProperty) {
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// If the property was omitted from the property texture, it is still
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// technically valid if it specifies a default value. Create a view that
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// just returns the default value.
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return PropertyTexturePropertyView<T, Normalized>(classProperty);
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}
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return PropertyTexturePropertyView<T, Normalized>(
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PropertyTexturePropertyViewStatus::ErrorNonexistentProperty);
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}
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const PropertyTextureProperty& propertyTextureProperty =
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propertyTexturePropertyIter->second;
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if constexpr (IsMetadataScalar<T>::value) {
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return createScalarPropertyView<T, Normalized>(
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classProperty,
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propertyTextureProperty,
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propertyOptions);
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}
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if constexpr (IsMetadataVecN<T>::value) {
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return createVecNPropertyView<T, Normalized>(
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classProperty,
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propertyTextureProperty,
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propertyOptions);
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}
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if constexpr (IsMetadataArray<T>::value) {
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return createArrayPropertyView<
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typename MetadataArrayType<T>::type,
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Normalized>(classProperty, propertyTextureProperty, propertyOptions);
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}
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}
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template <typename Callback, bool Normalized>
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void getArrayPropertyViewImpl(
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const std::string& propertyId,
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const ClassProperty& classProperty,
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PropertyType type,
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PropertyComponentType componentType,
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Callback&& callback,
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const TextureViewOptions& propertyOptions) const {
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// Only scalar arrays are supported.
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if (type != PropertyType::Scalar) {
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callback(
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propertyId,
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PropertyTexturePropertyView<uint8_t>(
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PropertyTexturePropertyViewStatus::ErrorUnsupportedProperty));
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return;
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}
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int64_t count = classProperty.count.value_or(0);
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if (count <= 0 || count > 4) {
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callback(
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propertyId,
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PropertyTexturePropertyView<uint8_t>(
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PropertyTexturePropertyViewStatus::ErrorUnsupportedProperty));
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return;
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}
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switch (componentType) {
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case PropertyComponentType::Int8:
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callback(
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propertyId,
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getPropertyViewImpl<PropertyArrayView<int8_t>, Normalized>(
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propertyId,
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classProperty,
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propertyOptions));
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break;
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case PropertyComponentType::Uint8:
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callback(
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propertyId,
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getPropertyViewImpl<PropertyArrayView<uint8_t>, Normalized>(
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propertyId,
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classProperty,
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propertyOptions));
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break;
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case PropertyComponentType::Int16:
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callback(
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propertyId,
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getPropertyViewImpl<PropertyArrayView<int16_t>, Normalized>(
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propertyId,
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classProperty,
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propertyOptions));
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break;
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case PropertyComponentType::Uint16:
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callback(
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propertyId,
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getPropertyViewImpl<PropertyArrayView<uint16_t>, Normalized>(
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propertyId,
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classProperty,
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propertyOptions));
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break;
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default:
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callback(
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propertyId,
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PropertyTexturePropertyView<uint8_t>(
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PropertyTexturePropertyViewStatus::ErrorUnsupportedProperty));
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break;
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}
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}
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template <typename Callback, bool Normalized>
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void getScalarPropertyViewImpl(
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const std::string& propertyId,
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const ClassProperty& classProperty,
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PropertyComponentType componentType,
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Callback&& callback,
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const TextureViewOptions& propertyOptions) const {
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switch (componentType) {
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case PropertyComponentType::Int8:
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callback(
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propertyId,
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getPropertyViewImpl<int8_t, Normalized>(
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propertyId,
|
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classProperty,
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propertyOptions));
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return;
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case PropertyComponentType::Uint8:
|
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callback(
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propertyId,
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getPropertyViewImpl<uint8_t, Normalized>(
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propertyId,
|
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classProperty,
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propertyOptions));
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return;
|
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case PropertyComponentType::Int16:
|
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callback(
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propertyId,
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getPropertyViewImpl<int16_t, Normalized>(
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propertyId,
|
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classProperty,
|
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propertyOptions));
|
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return;
|
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case PropertyComponentType::Uint16:
|
|
callback(
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propertyId,
|
|
getPropertyViewImpl<uint16_t, Normalized>(
|
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propertyId,
|
|
classProperty,
|
|
propertyOptions));
|
|
break;
|
|
case PropertyComponentType::Int32:
|
|
callback(
|
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propertyId,
|
|
getPropertyViewImpl<int32_t, Normalized>(
|
|
propertyId,
|
|
classProperty,
|
|
propertyOptions));
|
|
break;
|
|
case PropertyComponentType::Uint32:
|
|
callback(
|
|
propertyId,
|
|
getPropertyViewImpl<uint32_t, Normalized>(
|
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propertyId,
|
|
classProperty,
|
|
propertyOptions));
|
|
break;
|
|
case PropertyComponentType::Float32:
|
|
callback(
|
|
propertyId,
|
|
getPropertyViewImpl<float, false>(
|
|
propertyId,
|
|
classProperty,
|
|
propertyOptions));
|
|
break;
|
|
default:
|
|
callback(
|
|
propertyId,
|
|
PropertyTexturePropertyView<uint8_t>(
|
|
PropertyTexturePropertyViewStatus::ErrorUnsupportedProperty));
|
|
break;
|
|
}
|
|
}
|
|
|
|
template <typename Callback, glm::length_t N, bool Normalized>
|
|
void getVecNPropertyViewImpl(
|
|
const std::string& propertyId,
|
|
const ClassProperty& classProperty,
|
|
PropertyComponentType componentType,
|
|
Callback&& callback,
|
|
const TextureViewOptions& propertyOptions) const {
|
|
switch (componentType) {
|
|
case PropertyComponentType::Int8:
|
|
callback(
|
|
propertyId,
|
|
getPropertyViewImpl<glm::vec<N, int8_t>, Normalized>(
|
|
propertyId,
|
|
classProperty,
|
|
propertyOptions));
|
|
break;
|
|
case PropertyComponentType::Uint8:
|
|
callback(
|
|
propertyId,
|
|
getPropertyViewImpl<glm::vec<N, uint8_t>, Normalized>(
|
|
propertyId,
|
|
classProperty,
|
|
propertyOptions));
|
|
break;
|
|
case PropertyComponentType::Int16:
|
|
if constexpr (N == 2) {
|
|
callback(
|
|
propertyId,
|
|
getPropertyViewImpl<glm::vec<N, int16_t>, Normalized>(
|
|
propertyId,
|
|
classProperty,
|
|
propertyOptions));
|
|
break;
|
|
}
|
|
[[fallthrough]];
|
|
case PropertyComponentType::Uint16:
|
|
if constexpr (N == 2) {
|
|
callback(
|
|
propertyId,
|
|
getPropertyViewImpl<glm::vec<N, uint16_t>, Normalized>(
|
|
propertyId,
|
|
classProperty,
|
|
propertyOptions));
|
|
break;
|
|
}
|
|
[[fallthrough]];
|
|
default:
|
|
callback(
|
|
propertyId,
|
|
PropertyTexturePropertyView<uint8_t>(
|
|
PropertyTexturePropertyViewStatus::ErrorUnsupportedProperty));
|
|
break;
|
|
}
|
|
}
|
|
|
|
template <typename Callback, bool Normalized>
|
|
void getVecNPropertyViewImpl(
|
|
const std::string& propertyId,
|
|
const ClassProperty& classProperty,
|
|
PropertyType type,
|
|
PropertyComponentType componentType,
|
|
Callback&& callback,
|
|
const TextureViewOptions& propertyOptions) const {
|
|
const glm::length_t N = getDimensionsFromPropertyType(type);
|
|
switch (N) {
|
|
case 2:
|
|
getVecNPropertyViewImpl<Callback, 2, Normalized>(
|
|
propertyId,
|
|
classProperty,
|
|
componentType,
|
|
std::forward<Callback>(callback),
|
|
propertyOptions);
|
|
break;
|
|
case 3:
|
|
getVecNPropertyViewImpl<Callback, 3, Normalized>(
|
|
propertyId,
|
|
classProperty,
|
|
componentType,
|
|
std::forward<Callback>(callback),
|
|
propertyOptions);
|
|
break;
|
|
case 4:
|
|
getVecNPropertyViewImpl<Callback, 4, Normalized>(
|
|
propertyId,
|
|
classProperty,
|
|
componentType,
|
|
std::forward<Callback>(callback),
|
|
propertyOptions);
|
|
break;
|
|
default:
|
|
callback(
|
|
propertyId,
|
|
PropertyTexturePropertyView<uint8_t>(
|
|
PropertyTexturePropertyViewStatus::ErrorTypeMismatch));
|
|
break;
|
|
}
|
|
}
|
|
|
|
template <typename T, bool Normalized>
|
|
PropertyTexturePropertyView<T, Normalized> createScalarPropertyView(
|
|
const ClassProperty& classProperty,
|
|
[[maybe_unused]] const PropertyTextureProperty& propertyTextureProperty,
|
|
const TextureViewOptions& propertyOptions) const {
|
|
if (classProperty.array) {
|
|
return PropertyTexturePropertyView<T, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorArrayTypeMismatch);
|
|
}
|
|
|
|
const PropertyType type = convertStringToPropertyType(classProperty.type);
|
|
if (TypeToPropertyType<T>::value != type) {
|
|
return PropertyTexturePropertyView<T, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorTypeMismatch);
|
|
}
|
|
|
|
const PropertyComponentType componentType =
|
|
convertStringToPropertyComponentType(
|
|
classProperty.componentType.value_or(""));
|
|
if (TypeToPropertyType<T>::component != componentType) {
|
|
return PropertyTexturePropertyView<T, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorComponentTypeMismatch);
|
|
}
|
|
|
|
if (classProperty.normalized != Normalized) {
|
|
return PropertyTexturePropertyView<T, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorNormalizationMismatch);
|
|
}
|
|
|
|
// Only up to four bytes of image data are supported.
|
|
if constexpr (sizeof(T) <= 4) {
|
|
return createPropertyViewImpl<T, Normalized>(
|
|
classProperty,
|
|
propertyTextureProperty,
|
|
sizeof(T),
|
|
propertyOptions);
|
|
} else {
|
|
return PropertyTexturePropertyView<T, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorUnsupportedProperty);
|
|
}
|
|
}
|
|
|
|
template <typename T, bool Normalized>
|
|
PropertyTexturePropertyView<T, Normalized> createVecNPropertyView(
|
|
const ClassProperty& classProperty,
|
|
[[maybe_unused]] const PropertyTextureProperty& propertyTextureProperty,
|
|
[[maybe_unused]] const TextureViewOptions& propertyOptions) const {
|
|
if (classProperty.array) {
|
|
return PropertyTexturePropertyView<T, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorArrayTypeMismatch);
|
|
}
|
|
|
|
const PropertyType type = convertStringToPropertyType(classProperty.type);
|
|
if (TypeToPropertyType<T>::value != type) {
|
|
return PropertyTexturePropertyView<T, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorTypeMismatch);
|
|
}
|
|
|
|
const PropertyComponentType componentType =
|
|
convertStringToPropertyComponentType(
|
|
classProperty.componentType.value_or(""));
|
|
if (TypeToPropertyType<T>::component != componentType) {
|
|
return PropertyTexturePropertyView<T, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorComponentTypeMismatch);
|
|
}
|
|
|
|
if (classProperty.normalized != Normalized) {
|
|
return PropertyTexturePropertyView<T, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorNormalizationMismatch);
|
|
}
|
|
|
|
// Only up to four bytes of image data are supported.
|
|
if constexpr (sizeof(T) <= 4) {
|
|
return createPropertyViewImpl<T, Normalized>(
|
|
classProperty,
|
|
propertyTextureProperty,
|
|
sizeof(T),
|
|
propertyOptions);
|
|
} else {
|
|
return PropertyTexturePropertyView<T, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorUnsupportedProperty);
|
|
}
|
|
}
|
|
|
|
template <typename T, bool Normalized>
|
|
PropertyTexturePropertyView<PropertyArrayView<T>, Normalized>
|
|
createArrayPropertyView(
|
|
const ClassProperty& classProperty,
|
|
[[maybe_unused]] const PropertyTextureProperty& propertyTextureProperty,
|
|
[[maybe_unused]] const TextureViewOptions& propertyOptions) const {
|
|
if (!classProperty.array) {
|
|
return PropertyTexturePropertyView<PropertyArrayView<T>, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorArrayTypeMismatch);
|
|
}
|
|
|
|
const PropertyType type = convertStringToPropertyType(classProperty.type);
|
|
if (TypeToPropertyType<T>::value != type) {
|
|
return PropertyTexturePropertyView<PropertyArrayView<T>, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorTypeMismatch);
|
|
}
|
|
|
|
const PropertyComponentType componentType =
|
|
convertStringToPropertyComponentType(
|
|
classProperty.componentType.value_or(""));
|
|
if (TypeToPropertyType<T>::component != componentType) {
|
|
return PropertyTexturePropertyView<PropertyArrayView<T>, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorComponentTypeMismatch);
|
|
}
|
|
|
|
if (classProperty.normalized != Normalized) {
|
|
return PropertyTexturePropertyView<PropertyArrayView<T>, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorNormalizationMismatch);
|
|
}
|
|
|
|
// Only scalar arrays are supported. The scalar component type must not
|
|
// exceed two bytes.
|
|
if constexpr (IsMetadataScalar<T>::value && sizeof(T) <= 4) {
|
|
// Only up to four elements are supported.
|
|
int64_t count = classProperty.count.value_or(0);
|
|
if (count <= 0 || count > 4) {
|
|
return PropertyTexturePropertyView<PropertyArrayView<T>, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorUnsupportedProperty);
|
|
}
|
|
|
|
if (count * sizeof(T) > 4) {
|
|
return PropertyTexturePropertyView<PropertyArrayView<T>, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorUnsupportedProperty);
|
|
}
|
|
|
|
return createPropertyViewImpl<PropertyArrayView<T>, Normalized>(
|
|
classProperty,
|
|
propertyTextureProperty,
|
|
count * sizeof(T),
|
|
propertyOptions);
|
|
} else {
|
|
return PropertyTexturePropertyView<PropertyArrayView<T>, Normalized>(
|
|
PropertyTexturePropertyViewStatus::ErrorUnsupportedProperty);
|
|
}
|
|
}
|
|
|
|
template <typename T, bool Normalized>
|
|
PropertyTexturePropertyView<T, Normalized> createPropertyViewImpl(
|
|
const ClassProperty& classProperty,
|
|
const PropertyTextureProperty& propertyTextureProperty,
|
|
size_t elementSize,
|
|
const TextureViewOptions& propertyOptions) const {
|
|
int32_t samplerIndex;
|
|
int32_t imageIndex;
|
|
|
|
auto status =
|
|
getTextureSafe(propertyTextureProperty.index, samplerIndex, imageIndex);
|
|
|
|
if (status != PropertyTexturePropertyViewStatus::Valid) {
|
|
return PropertyTexturePropertyView<T, Normalized>(status);
|
|
}
|
|
|
|
status = checkSampler(samplerIndex);
|
|
if (status != PropertyTexturePropertyViewStatus::Valid) {
|
|
return PropertyTexturePropertyView<T, Normalized>(status);
|
|
}
|
|
|
|
status = checkImage(imageIndex);
|
|
if (status != PropertyTexturePropertyViewStatus::Valid) {
|
|
return PropertyTexturePropertyView<T, Normalized>(status);
|
|
}
|
|
|
|
const CesiumUtility::IntrusivePointer<ImageAsset>& pImage =
|
|
_pModel->images[imageIndex].pAsset;
|
|
const std::vector<int64_t>& channels = propertyTextureProperty.channels;
|
|
|
|
status = checkChannels(channels, *pImage);
|
|
if (status != PropertyTexturePropertyViewStatus::Valid) {
|
|
return PropertyTexturePropertyView<T, Normalized>(status);
|
|
}
|
|
|
|
if (channels.size() * pImage->bytesPerChannel != elementSize) {
|
|
return PropertyTexturePropertyViewStatus::ErrorChannelsAndTypeMismatch;
|
|
}
|
|
|
|
return PropertyTexturePropertyView<T, Normalized>(
|
|
propertyTextureProperty,
|
|
classProperty,
|
|
_pModel->samplers[samplerIndex],
|
|
*pImage,
|
|
propertyOptions);
|
|
}
|
|
|
|
PropertyViewStatusType getTextureSafe(
|
|
const int32_t textureIndex,
|
|
int32_t& samplerIndex,
|
|
int32_t& imageIndex) const noexcept;
|
|
|
|
PropertyViewStatusType
|
|
checkSampler(const int32_t samplerIndex) const noexcept;
|
|
|
|
PropertyViewStatusType checkImage(const int32_t imageIndex) const noexcept;
|
|
|
|
PropertyViewStatusType checkChannels(
|
|
const std::vector<int64_t>& channels,
|
|
const ImageAsset& image) const noexcept;
|
|
|
|
const Model* _pModel;
|
|
const PropertyTexture* _pPropertyTexture;
|
|
const Class* _pClass;
|
|
|
|
PropertyTextureViewStatus _status;
|
|
};
|
|
} // namespace CesiumGltf
|