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/*
 * Copyright 2017 David Naramski.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by the
 * European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *      http://joinup.ec.europa.eu/software/page/eupl/licence-eupl
 *
 * 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 net.nowina.cadmelia.script.module;

import net.nowina.cadmelia.construction.FactoryBuilder;
import net.nowina.cadmelia.construction.Construction;
import net.nowina.cadmelia.script.Command;
import net.nowina.cadmelia.script.Expression;
import net.nowina.cadmelia.script.ModuleExec;
import net.nowina.cadmelia.script.ScriptContext;

public class CircleModule extends ModuleExec {

    public static final String MODULE_NAME = "circle";

    private FactoryBuilder factory;

    public CircleModule(FactoryBuilder factory) {
        super(MODULE_NAME);
        this.factory = factory;
    }

    @Override
    public Construction execute(Command op, ScriptContext context) {

        int resolution = 16;
        Expression resolutionExpr = op.getArg("$fa");
        if (resolutionExpr != null) {
            resolution = resolutionExpr.evaluateAsInteger(context);
        }

        Expression size = op.getArg("r");
        if (size == null) {
            size = op.getArg(0);
        }
        double radius = size.evaluateAsDouble(context);

        return factory.createShapeFactory().circle(radius, resolution);
    }

}