Potential new exceptions with more clear names.

djutils-draw/src/main/java/org/djutils/draw/DegenerateLineException.java

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+package org.djutils.draw;
+
+/**
+ * DegenerateLineException is a special type of DrawRuntimeException, that is thrown if a line or line segment is constructed or
+ * simplified to less than two points.
+ * <p>
+ * Copyright (c) 2020-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
+ * BSD-style license. See <a href="https://djutils.org/docs/current/djutils/licenses.html">DJUTILS License</a>.
+ * </p>
+ * @author <a href="https://www.tudelft.nl/averbraeck">Alexander Verbraeck</a>
+ * @author <a href="https://www.tudelft.nl/pknoppers">Peter Knoppers</a>
+ */
+public class DegenerateLineException extends DrawRuntimeException
+{
+    /** */
+    private static final long serialVersionUID = 20200828L;
+
+    /**
+     * Create an empty runtime drawing exception.
+     */
+    public DegenerateLineException()
+    {
+        super();
+    }
+
+    /**
+     * Create a runtime drawing exception with a custom message.
+     * @param message String; the custom message.
+     */
+    public DegenerateLineException(final String message)
+    {
+        super(message);
+    }
+
+    /**
+     * Create a runtime drawing exception with an underlying cause.
+     * @param cause Throwable; the cause of this exception to be thrown
+     */
+    public DegenerateLineException(final Throwable cause)
+    {
+        super(cause);
+    }
+
+    /**
+     * Create a runtime drawing exception with a custom message and an underlying cause.
+     * @param message String; the custom message
+     * @param cause Throwable; the cause of this exception to be thrown
+     */
+    public DegenerateLineException(final String message, final Throwable cause)
+    {
+        super(message, cause);
+    }
+
+}

djutils-draw/src/main/java/org/djutils/draw/InternalCalculationException.java

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+package org.djutils.draw;
+
+/**
+ * InternalCalculationException is a special type of DrawRuntimeException, that is thrown if a method fails during the
+ * construction of a drawable object or during the calculation of a property of a drawable object.
+ * <p>
+ * Copyright (c) 2020-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
+ * BSD-style license. See <a href="https://djutils.org/docs/current/djutils/licenses.html">DJUTILS License</a>.
+ * </p>
+ * @author <a href="https://www.tudelft.nl/averbraeck">Alexander Verbraeck</a>
+ * @author <a href="https://www.tudelft.nl/pknoppers">Peter Knoppers</a>
+ */
+public class InternalCalculationException extends DrawRuntimeException
+{
+    /** */
+    private static final long serialVersionUID = 20200828L;
+
+    /**
+     * Create an empty runtime drawing exception.
+     */
+    public InternalCalculationException()
+    {
+        super();
+    }
+
+    /**
+     * Create a runtime drawing exception with a custom message.
+     * @param message String; the custom message.
+     */
+    public InternalCalculationException(final String message)
+    {
+        super(message);
+    }
+
+    /**
+     * Create a runtime drawing exception with an underlying cause.
+     * @param cause Throwable; the cause of this exception to be thrown
+     */
+    public InternalCalculationException(final Throwable cause)
+    {
+        super(cause);
+    }
+
+    /**
+     * Create a runtime drawing exception with a custom message and an underlying cause.
+     * @param message String; the custom message
+     * @param cause Throwable; the cause of this exception to be thrown
+     */
+    public InternalCalculationException(final String message, final Throwable cause)
+    {
+        super(message, cause);
+    }
+
+}

djutils-draw/src/main/java/org/djutils/draw/InvalidProjectionException.java

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+package org.djutils.draw;
+
+/**
+ * InvalidProjectionException is a special type of DrawRuntimeException, that is thrown if a projection results in an invalid
+ * object, or if a projection cannot be carried out.
+ * <p>
+ * Copyright (c) 2020-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
+ * BSD-style license. See <a href="https://djutils.org/docs/current/djutils/licenses.html">DJUTILS License</a>.
+ * </p>
+ * @author <a href="https://www.tudelft.nl/averbraeck">Alexander Verbraeck</a>
+ * @author <a href="https://www.tudelft.nl/pknoppers">Peter Knoppers</a>
+ */
+public class InvalidProjectionException extends DrawRuntimeException
+{
+    /** */
+    private static final long serialVersionUID = 20200828L;
+
+    /**
+     * Create an empty runtime drawing exception.
+     */
+    public InvalidProjectionException()
+    {
+        super();
+    }
+
+    /**
+     * Create a runtime drawing exception with a custom message.
+     * @param message String; the custom message.
+     */
+    public InvalidProjectionException(final String message)
+    {
+        super(message);
+    }
+
+    /**
+     * Create a runtime drawing exception with an underlying cause.
+     * @param cause Throwable; the cause of this exception to be thrown
+     */
+    public InvalidProjectionException(final Throwable cause)
+    {
+        super(cause);
+    }
+
+    /**
+     * Create a runtime drawing exception with a custom message and an underlying cause.
+     * @param message String; the custom message
+     * @param cause Throwable; the cause of this exception to be thrown
+     */
+    public InvalidProjectionException(final String message, final Throwable cause)
+    {
+        super(message, cause);
+    }
+
+}