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a JNI interface to Jolt Physics
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/*
Copyright (c) 2024 Stephen Gold

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
 */
package com.github.stephengold.joltjni.readonly;

import com.github.stephengold.joltjni.Vec3;

/**
 * Read-only access to a {@code Vec3}. (native type: const Vec3)
 *
 * @author Stephen Gold [email protected]
 */
public interface Vec3Arg {
    // *************************************************************************
    // new methods exposed

    /**
     * Return the cross product with the specified vector. The current vector is
     * unaffected.
     *
     * @param rightFactor the vector to cross with the current one (not null,
     * unaffected)
     * @return a new product vector
     */
    Vec3 cross(Vec3Arg rightFactor);

    /**
     * Return the dot product with the specified vector. The current vector is
     * unaffected.
     *
     * @param factor the vector to dot with the current one (not null,
     * unaffected)
     * @return the dot product
     */
    float dot(Vec3Arg factor);

    /**
     * Return the specified component. The vector is unaffected.
     *
     * @param index 0, 1, or 2
     * @return the X component if index=0, the Y component if index=1, or the Z
     * component if index=2
     * @throws IllegalArgumentException if index is not 0, 1, or 2
     */
    float get(int index);

    /**
     * Return an arbitrary unit vector perpendicular to the current vector. The
     * current vector is unaffected.
     *
     * @return a new vector
     */
    Vec3 getNormalizedPerpendicular();

    /**
     * Return the first (X) component in single precision. The vector is
     * unaffected.
     *
     * @return the component value
     */
    float getX();

    /**
     * Return the 2nd (Y) component in single precision. The vector is
     * unaffected.
     *
     * @return the component value
     */
    float getY();

    /**
     * Return the 3rd (Z) component in single precision. The vector is
     * unaffected.
     *
     * @return the component value
     */
    float getZ();

    /**
     * Test whether the vector is zero to within a tolerance of 10^-12. The
     * vector is unaffected.
     *
     * @return {@code true} if near zero, otherwise {@code false}
     */
    boolean isNearZero();

    /**
     * Test whether the vector is zero to within the specified tolerance. The
     * vector is unaffected.
     *
     * @param tolerance the desired tolerance (default=1e-12)
     * @return {@code true} if near zero, otherwise {@code false}
     */
    boolean isNearZero(float tolerance);

    /**
     * Test whether the vector is normalized to within a tolerance of 10^-6. The
     * vector is unaffected.
     *
     * @return {@code true} if normalized, otherwise {@code false}
     */
    boolean isNormalized();

    /**
     * Test whether the vector is normalized to within the specified tolerance.
     * The vector is unaffected.
     *
     * @param tolerance the desired tolerance (default=1e-6)
     * @return {@code true} if normalized, otherwise {@code false}
     */
    boolean isNormalized(float tolerance);

    /**
     * Return the length. The vector is unaffected.
     *
     * @return the length
     */
    float length();

    /**
     * Return the squared length. The vector is unaffected.
     *
     * @return the squared length
     */
    float lengthSq();

    /**
     * Generate a normalized vector with the same direction. The current vector
     * is unaffected.
     *
     * @return a new vector
     */
    Vec3 normalized();

    /**
     * Return a copy of the argument if the length of the current vector is
     * zero. Otherwise, generate a normalized vector with the same direction as
     * the current vector. The current vector is unaffected.
     *
     * @param zeroValue the value to return if the length is zero (not null,
     * unaffected)
     * @return a new vector
     */
    Vec3 normalizedOr(Vec3Arg zeroValue);

    /**
     * Generate the component-wise reciprocal. The current vector is unaffected.
     *
     * @return a new vector
     */
    Vec3 reciprocal();

    /**
     * Copy the components to an array. The vector is unaffected.
     *
     * @return a new array with length=3
     */
    float[] toArray();
}