gwt.g3d.resources.client.impl.AbstractMeshResource.java Source code

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Here is the source code for gwt.g3d.resources.client.impl.AbstractMeshResource.java

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/*
 * Copyright 2009 Hao Nguyen
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package gwt.g3d.resources.client.impl;

import gwt.g3d.client.gl2.GL2;
import gwt.g3d.client.gl2.array.Float32Array;
import gwt.g3d.client.gl2.array.TypeArray;
import gwt.g3d.client.gl2.array.Uint16Array;
import gwt.g3d.client.mesh.StaticMesh;
import gwt.g3d.resources.client.MeshResource;

import com.google.gwt.core.client.JsArrayInteger;
import com.google.gwt.core.client.JsArrayNumber;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONValue;

/**
 * Abstract implementation of {@link MeshResource}
 * 
 * @author hao1300@gmail.com
 */
public abstract class AbstractMeshResource implements MeshResource {
    public static final String POSITION_FIELD = "vertexPositions";
    public static final String NORMAL_FIELD = "vertexNormals";
    public static final String TEX_COORD_FIELD = "vertexTextureCoords";
    public static final String INDICES_FIELD = "indices";

    private final TypeArray positions, normals, texCoords, indices;
    private final MeshDataInfo meshDataInfo;

    public AbstractMeshResource(MeshDataInfo meshDataInfo, JSONValue meshValue) {
        this.meshDataInfo = meshDataInfo;
        JSONObject jsonObj = meshValue.isObject();
        positions = Float32Array
                .create(jsonObj.get(POSITION_FIELD).isArray().getJavaScriptObject().<JsArrayNumber>cast());
        normals = Float32Array
                .create(jsonObj.get(NORMAL_FIELD).isArray().getJavaScriptObject().<JsArrayNumber>cast());
        texCoords = Float32Array
                .create(jsonObj.get(TEX_COORD_FIELD).isArray().getJavaScriptObject().<JsArrayNumber>cast());
        indices = Uint16Array
                .create(jsonObj.get(INDICES_FIELD).isArray().getJavaScriptObject().<JsArrayInteger>cast());
    }

    @Override
    public StaticMesh createMesh(GL2 gl) {
        StaticMesh mesh = new StaticMesh(gl, null, null, null, indices);
        mesh.setPositionData(positions, meshDataInfo.getPositionDataType(), meshDataInfo.getPositionDataSize());
        mesh.setNormalData(normals, meshDataInfo.getNormalDataType(), meshDataInfo.getNormalDataSize(),
                meshDataInfo.isNormalized());
        mesh.setTexCoordData(texCoords, meshDataInfo.getTexCoordDataType(), meshDataInfo.getTexCoordDataSize());
        return mesh;
    }
}