328 lines
12 KiB
C++
328 lines
12 KiB
C++
/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2024, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the following
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conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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/// \file AMFImporter_Material.cpp
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/// \brief Parsing data from material nodes.
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/// \date 2016
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/// \author smal.root@gmail.com
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#ifndef ASSIMP_BUILD_NO_AMF_IMPORTER
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#include "AMFImporter.hpp"
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namespace Assimp {
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// <color
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// profile="" - The ICC color space used to interpret the three color channels <r>, <g> and <b>.
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// >
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// </color>
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// A color definition.
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// Multi elements - No.
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// Parent element - <material>, <object>, <volume>, <vertex>, <triangle>.
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//
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// "profile" can be one of "sRGB", "AdobeRGB", "Wide-Gamut-RGB", "CIERGB", "CIELAB", or "CIEXYZ".
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// Children elements:
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// <r>, <g>, <b>, <a>
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// Multi elements - No.
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// Red, Greed, Blue and Alpha (transparency) component of a color in sRGB space, values ranging from 0 to 1. The
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// values can be specified as constants, or as a formula depending on the coordinates.
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void AMFImporter::ParseNode_Color(XmlNode &node) {
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if (node.empty()) {
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return;
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}
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const std::string &profile = node.attribute("profile").as_string();
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bool read_flag[4] = { false, false, false, false };
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AMFNodeElementBase *ne = new AMFColor(mNodeElement_Cur);
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AMFColor &als = *((AMFColor *)ne); // alias for convenience
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ParseHelper_Node_Enter(ne);
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for (pugi::xml_node &child : node.children()) {
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// create new color object.
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als.Profile = profile;
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const std::string &name = child.name();
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if ( name == "r") {
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read_flag[0] = true;
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XmlParser::getValueAsFloat(child, als.Color.r);
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} else if (name == "g") {
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read_flag[1] = true;
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XmlParser::getValueAsFloat(child, als.Color.g);
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} else if (name == "b") {
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read_flag[2] = true;
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XmlParser::getValueAsFloat(child, als.Color.b);
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} else if (name == "a") {
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read_flag[3] = true;
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XmlParser::getValueAsFloat(child, als.Color.a);
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}
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// check if <a> is absent. Then manually add "a == 1".
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if (!read_flag[3]) {
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als.Color.a = 1;
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}
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}
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als.Composed = false;
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mNodeElement_List.push_back(ne); // and to node element list because its a new object in graph.
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ParseHelper_Node_Exit();
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// check that all components was defined
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if (!(read_flag[0] && read_flag[1] && read_flag[2])) {
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throw DeadlyImportError("Not all color components are defined.");
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}
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}
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// <material
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// id="" - A unique material id. material ID "0" is reserved to denote no material (void) or sacrificial material.
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// >
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// </material>
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// An available material.
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// Multi elements - Yes.
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// Parent element - <amf>.
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void AMFImporter::ParseNode_Material(XmlNode &node) {
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// create new object and assign read data
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std::string id = node.attribute("id").as_string();
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AMFNodeElementBase *ne = new AMFMaterial(mNodeElement_Cur);
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((AMFMaterial*)ne)->ID = id;
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// Check for child nodes
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if (!node.empty()) {
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ParseHelper_Node_Enter(ne);
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for (pugi::xml_node &child : node.children()) {
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const std::string name = child.name();
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if (name == "color") {
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ParseNode_Color(child);
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} else if (name == "metadata") {
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ParseNode_Metadata(child);
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}
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}
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ParseHelper_Node_Exit();
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} else {
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mNodeElement_Cur->Child.push_back(ne);// Add element to child list of current element
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}
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mNodeElement_List.push_back(ne);// and to node element list because its a new object in graph.
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}
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// <texture
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// id="" - Assigns a unique texture id for the new texture.
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// width="" - Width (horizontal size, x) of the texture, in pixels.
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// height="" - Height (lateral size, y) of the texture, in pixels.
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// depth="" - Depth (vertical size, z) of the texture, in pixels.
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// type="" - Encoding of the data in the texture. Currently allowed values are "grayscale" only. In grayscale mode, each pixel is represented by one byte
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// in the range of 0-255. When the texture is referenced using the tex function, these values are converted into a single floating point number in the
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// range of 0-1 (see Annex 2). A full color graphics will typically require three textures, one for each of the color channels. A graphic involving
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// transparency may require a fourth channel.
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// tiled="" - If true then texture repeated when UV-coordinates is greater than 1.
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// >
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// </triangle>
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// Specifies an texture data to be used as a map. Lists a sequence of Base64 values specifying values for pixels from left to right then top to bottom,
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// then layer by layer.
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// Multi elements - Yes.
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// Parent element - <amf>.
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void AMFImporter::ParseNode_Texture(XmlNode &node) {
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const std::string id = node.attribute("id").as_string();
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const uint32_t width = node.attribute("width").as_uint();
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const uint32_t height = node.attribute("height").as_uint();
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uint32_t depth = node.attribute("depth").as_uint();
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const std::string type = node.attribute("type").as_string();
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bool tiled = node.attribute("tiled").as_bool();
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if (node.empty()) {
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return;
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}
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// create new texture object.
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AMFNodeElementBase *ne = new AMFTexture(mNodeElement_Cur);
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AMFTexture& als = *((AMFTexture*)ne);// alias for convenience
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std::string enc64_data;
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XmlParser::getValueAsString(node, enc64_data);
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// Check for child nodes
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// check that all components was defined
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if (id.empty()) {
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throw DeadlyImportError("ID for texture must be defined.");
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}
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if (width < 1) {
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throw DeadlyImportError("Invalid width for texture.");
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}
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if (height < 1) {
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throw DeadlyImportError("Invalid height for texture.");
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}
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if (type != "grayscale") {
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throw DeadlyImportError("Invalid type for texture.");
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}
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if (enc64_data.empty()) {
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throw DeadlyImportError("Texture data not defined.");
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}
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// copy data
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als.ID = id;
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als.Width = width;
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als.Height = height;
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als.Depth = depth;
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als.Tiled = tiled;
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ParseHelper_Decode_Base64(enc64_data, als.Data);
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if (depth == 0) {
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depth = (uint32_t)(als.Data.size() / (width * height));
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}
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// check data size
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if ((width * height * depth) != als.Data.size()) {
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throw DeadlyImportError("Texture has incorrect data size.");
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}
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mNodeElement_Cur->Child.push_back(ne);// Add element to child list of current element
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mNodeElement_List.push_back(ne);// and to node element list because its a new object in graph.
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}
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// <texmap
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// rtexid="" - Texture ID for red color component.
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// gtexid="" - Texture ID for green color component.
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// btexid="" - Texture ID for blue color component.
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// atexid="" - Texture ID for alpha color component. Optional.
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// >
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// </texmap>, old name: <map>
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// Specifies texture coordinates for triangle.
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// Multi elements - No.
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// Parent element - <triangle>.
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// Children elements:
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// <utex1>, <utex2>, <utex3>, <vtex1>, <vtex2>, <vtex3>. Old name: <u1>, <u2>, <u3>, <v1>, <v2>, <v3>.
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// Multi elements - No.
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// Texture coordinates for every vertex of triangle.
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void AMFImporter::ParseNode_TexMap(XmlNode &node, const bool pUseOldName) {
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// Read attributes for node <color>.
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AMFNodeElementBase *ne = new AMFTexMap(mNodeElement_Cur);
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AMFTexMap &als = *((AMFTexMap *)ne); //
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std::string rtexid, gtexid, btexid, atexid;
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if (!node.empty()) {
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for (pugi::xml_attribute &attr : node.attributes()) {
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const std::string ¤tAttr = attr.name();
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if (currentAttr == "rtexid") {
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rtexid = attr.as_string();
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} else if (currentAttr == "gtexid") {
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gtexid = attr.as_string();
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} else if (currentAttr == "btexid") {
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btexid = attr.as_string();
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} else if (currentAttr == "atexid") {
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atexid = attr.as_string();
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}
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}
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}
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// create new texture coordinates object, alias for convenience
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// check data
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if (rtexid.empty() && gtexid.empty() && btexid.empty()) {
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throw DeadlyImportError("ParseNode_TexMap. At least one texture ID must be defined.");
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}
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// Check for children nodes
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if (node.children().begin() == node.children().end()) {
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throw DeadlyImportError("Invalid children definition.");
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}
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// read children nodes
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bool read_flag[6] = { false, false, false, false, false, false };
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if (!pUseOldName) {
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ParseHelper_Node_Enter(ne);
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for ( XmlNode ¤tNode : node.children()) {
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const std::string &name = currentNode.name();
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if (name == "utex1") {
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read_flag[0] = true;
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XmlParser::getValueAsFloat(node, als.TextureCoordinate[0].x);
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} else if (name == "utex2") {
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read_flag[1] = true;
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XmlParser::getValueAsFloat(node, als.TextureCoordinate[1].x);
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} else if (name == "utex3") {
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read_flag[2] = true;
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XmlParser::getValueAsFloat(node, als.TextureCoordinate[2].x);
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} else if (name == "vtex1") {
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read_flag[3] = true;
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XmlParser::getValueAsFloat(node, als.TextureCoordinate[0].y);
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} else if (name == "vtex2") {
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read_flag[4] = true;
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XmlParser::getValueAsFloat(node, als.TextureCoordinate[1].y);
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} else if (name == "vtex3") {
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read_flag[5] = true;
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XmlParser::getValueAsFloat(node, als.TextureCoordinate[2].y);
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}
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}
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ParseHelper_Node_Exit();
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} else {
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for (pugi::xml_attribute &attr : node.attributes()) {
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const std::string name = attr.name();
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if (name == "u") {
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read_flag[0] = true;
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als.TextureCoordinate[0].x = attr.as_float();
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} else if (name == "u2") {
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read_flag[1] = true;
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als.TextureCoordinate[1].x = attr.as_float();
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} else if (name == "u3") {
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read_flag[2] = true;
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als.TextureCoordinate[2].x = attr.as_float();
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} else if (name == "v1") {
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read_flag[3] = true;
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als.TextureCoordinate[0].y = attr.as_float();
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} else if (name == "v2") {
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read_flag[4] = true;
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als.TextureCoordinate[1].y = attr.as_float();
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} else if (name == "v3") {
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read_flag[5] = true;
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als.TextureCoordinate[0].y = attr.as_float();
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}
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}
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}
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// check that all components was defined
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if (!(read_flag[0] && read_flag[1] && read_flag[2] && read_flag[3] && read_flag[4] && read_flag[5])) {
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throw DeadlyImportError("Not all texture coordinates are defined.");
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}
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// copy attributes data
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als.TextureID_R = rtexid;
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als.TextureID_G = gtexid;
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als.TextureID_B = btexid;
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als.TextureID_A = atexid;
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mNodeElement_List.push_back(ne);
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}
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}// namespace Assimp
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#endif // !ASSIMP_BUILD_NO_AMF_IMPORTER
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