org.joml.Vector2i Maven / Gradle / Ivy
/*
* The MIT License
*
* Copyright (c) 2015-2020 Richard Greenlees
*
* 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 org.joml;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.nio.ByteBuffer;
import java.nio.IntBuffer;
import java.text.DecimalFormat;
import java.text.NumberFormat;
/**
* Represents a 2D vector with single-precision.
*
* @author RGreenlees
* @author Kai Burjack
* @author Hans Uhlig
*/
public class Vector2i implements Externalizable, Vector2ic {
private static final long serialVersionUID = 1L;
/**
* The x component of the vector.
*/
public int x;
/**
* The y component of the vector.
*/
public int y;
/**
* Create a new {@link Vector2i} and initialize its components to zero.
*/
public Vector2i() {
}
/**
* Create a new {@link Vector2i} and initialize both of its components with
* the given value.
*
* @param s
* the value of both components
*/
public Vector2i(int s) {
this.x = s;
this.y = s;
}
/**
* Create a new {@link Vector2i} and initialize its components to the given values.
*
* @param x
* the x component
* @param y
* the y component
*/
public Vector2i(int x, int y) {
this.x = x;
this.y = y;
}
/**
* Create a new {@link Vector2i} and initialize its components to the one of
* the given vector.
*
* @param v
* the {@link Vector2ic} to copy the values from
*/
public Vector2i(Vector2ic v) {
x = v.x();
y = v.y();
}
/**
* Create a new {@link Vector2i} and initialize its components to the rounded value of
* the given vector.
*
* @param v
* the {@link Vector2fc} to round and copy the values from
* @param mode
* the {@link RoundingMode} to use
*/
public Vector2i(Vector2fc v, int mode) {
x = Math.roundUsing(v.x(), mode);
y = Math.roundUsing(v.y(), mode);
}
/**
* Create a new {@link Vector2i} and initialize its components to the rounded value of
* the given vector.
*
* @param v
* the {@link Vector2dc} to round and copy the values from
* @param mode
* the {@link RoundingMode} to use
*/
public Vector2i(Vector2dc v, int mode) {
x = Math.roundUsing(v.x(), mode);
y = Math.roundUsing(v.y(), mode);
}
/**
* Create a new {@link Vector2i} and initialize its two components from the first
* two elements of the given array.
*
* @param xy
* the array containing at least three elements
*/
public Vector2i(int[] xy) {
this.x = xy[0];
this.y = xy[1];
}
/**
* Create a new {@link Vector2i} and read this vector from the supplied
* {@link ByteBuffer} at the current buffer
* {@link ByteBuffer#position() position}.
*
* This method will not increment the position of the given ByteBuffer.
*
* In order to specify the offset into the ByteBuffer at which the vector is
* read, use {@link #Vector2i(int, ByteBuffer)}, taking the absolute
* position as parameter.
*
* @see #Vector2i(int, ByteBuffer)
*
* @param buffer
* values will be read in x, y order
*/
public Vector2i(ByteBuffer buffer) {
MemUtil.INSTANCE.get(this, buffer.position(), buffer);
}
/**
* Create a new {@link Vector2i} and read this vector from the supplied
* {@link ByteBuffer} starting at the specified absolute buffer
* position/index.
*
* This method will not increment the position of the given ByteBuffer.
*
* @param index
* the absolute position into the ByteBuffer
* @param buffer
* values will be read in x, y order
*/
public Vector2i(int index, ByteBuffer buffer) {
MemUtil.INSTANCE.get(this, index, buffer);
}
/**
* Create a new {@link Vector2i} and read this vector from the supplied
* {@link IntBuffer} at the current buffer
* {@link IntBuffer#position() position}.
*
* This method will not increment the position of the given IntBuffer.
*
* In order to specify the offset into the IntBuffer at which the vector is
* read, use {@link #Vector2i(int, IntBuffer)}, taking the absolute position
* as parameter.
*
* @see #Vector2i(int, IntBuffer)
*
* @param buffer
* values will be read in x, y order
*/
public Vector2i(IntBuffer buffer) {
MemUtil.INSTANCE.get(this, buffer.position(), buffer);
}
/**
* Create a new {@link Vector2i} and read this vector from the supplied
* {@link IntBuffer} starting at the specified absolute buffer
* position/index.
*
* This method will not increment the position of the given IntBuffer.
*
* @param index
* the absolute position into the IntBuffer
* @param buffer
* values will be read in x, y order
*/
public Vector2i(int index, IntBuffer buffer) {
MemUtil.INSTANCE.get(this, index, buffer);
}
public int x() {
return this.x;
}
public int y() {
return this.y;
}
/**
* Set the x and y components to the supplied value.
*
* @param s
* scalar value of both components
* @return this
*/
public Vector2i set(int s) {
this.x = s;
this.y = s;
return this;
}
/**
* Set the x and y components to the supplied values.
*
* @param x
* the x component
* @param y
* the y component
* @return this
*/
public Vector2i set(int x, int y) {
this.x = x;
this.y = y;
return this;
}
/**
* Set this {@link Vector2i} to the values of v.
*
* @param v
* the vector to copy from
* @return this
*/
public Vector2i set(Vector2ic v) {
this.x = v.x();
this.y = v.y();
return this;
}
/**
* Set this {@link Vector2i} to the values of v using {@link RoundingMode#TRUNCATE} rounding.
*
* Note that due to the given vector v storing the components
* in double-precision, there is the possibility to lose precision.
*
* @param v
* the vector to copy from
* @return this
*/
public Vector2i set(Vector2dc v) {
this.x = (int) v.x();
this.y = (int) v.y();
return this;
}
/**
* Set this {@link Vector2i} to the values of v using the given {@link RoundingMode}.
*
* Note that due to the given vector v storing the components
* in double-precision, there is the possibility to lose precision.
*
* @param v
* the vector to copy from
* @param mode
* the {@link RoundingMode} to use
* @return this
*/
public Vector2i set(Vector2dc v, int mode) {
this.x = Math.roundUsing(v.x(), mode);
this.y = Math.roundUsing(v.y(), mode);
return this;
}
/**
* Set this {@link Vector2i} to the values of v using the given {@link RoundingMode}.
*
* Note that due to the given vector v storing the components
* in double-precision, there is the possibility to lose precision.
*
* @param v
* the vector to copy from
* @param mode
* the {@link RoundingMode} to use
* @return this
*/
public Vector2i set(Vector2fc v, int mode) {
this.x = Math.roundUsing(v.x(), mode);
this.y = Math.roundUsing(v.y(), mode);
return this;
}
/**
* Set the two components of this vector to the first two elements of the given array.
*
* @param xy
* the array containing at least two elements
* @return this
*/
public Vector2i set(int[] xy) {
this.x = xy[0];
this.y = xy[1];
return this;
}
/**
* Read this vector from the supplied {@link ByteBuffer} at the current
* buffer {@link ByteBuffer#position() position}.
*
* This method will not increment the position of the given ByteBuffer.
*
* In order to specify the offset into the ByteBuffer at which the vector is
* read, use {@link #set(int, ByteBuffer)}, taking the absolute position as
* parameter.
*
* @see #set(int, ByteBuffer)
*
* @param buffer
* values will be read in x, y order
* @return this
*/
public Vector2i set(ByteBuffer buffer) {
MemUtil.INSTANCE.get(this, buffer.position(), buffer);
return this;
}
/**
* Read this vector from the supplied {@link ByteBuffer} starting at the
* specified absolute buffer position/index.
*
* This method will not increment the position of the given ByteBuffer.
*
* @param index
* the absolute position into the ByteBuffer
* @param buffer
* values will be read in x, y order
* @return this
*/
public Vector2i set(int index, ByteBuffer buffer) {
MemUtil.INSTANCE.get(this, index, buffer);
return this;
}
/**
* Read this vector from the supplied {@link IntBuffer} at the current
* buffer {@link IntBuffer#position() position}.
*
* This method will not increment the position of the given IntBuffer.
*
* In order to specify the offset into the IntBuffer at which the vector is
* read, use {@link #set(int, IntBuffer)}, taking the absolute position as
* parameter.
*
* @see #set(int, IntBuffer)
*
* @param buffer
* values will be read in x, y order
* @return this
*/
public Vector2i set(IntBuffer buffer) {
MemUtil.INSTANCE.get(this, buffer.position(), buffer);
return this;
}
/**
* Read this vector from the supplied {@link IntBuffer} starting at the
* specified absolute buffer position/index.
*
* This method will not increment the position of the given IntBuffer.
*
* @param index
* the absolute position into the IntBuffer
* @param buffer
* values will be read in x, y order
* @return this
*/
public Vector2i set(int index, IntBuffer buffer) {
MemUtil.INSTANCE.get(this, index, buffer);
return this;
}
/**
* Set the values of this vector by reading 2 integer values from off-heap memory,
* starting at the given address.
*
* This method will throw an {@link UnsupportedOperationException} when JOML is used with `-Djoml.nounsafe`.
*
* This method is unsafe as it can result in a crash of the JVM process when the specified address range does not belong to this process.
*
* @param address
* the off-heap memory address to read the vector values from
* @return this
*/
public Vector2i setFromAddress(long address) {
if (Options.NO_UNSAFE)
throw new UnsupportedOperationException("Not supported when using joml.nounsafe");
MemUtil.MemUtilUnsafe.get(this, address);
return this;
}
public int get(int component) throws IllegalArgumentException {
switch (component) {
case 0:
return x;
case 1:
return y;
default:
throw new IllegalArgumentException();
}
}
/**
* Set the value of the specified component of this vector.
*
* @param component
* the component whose value to set, within [0..1]
* @param value
* the value to set
* @return this
* @throws IllegalArgumentException if component is not within [0..1]
*/
public Vector2i setComponent(int component, int value) throws IllegalArgumentException {
switch (component) {
case 0:
x = value;
break;
case 1:
y = value;
break;
default:
throw new IllegalArgumentException();
}
return this;
}
public ByteBuffer get(ByteBuffer buffer) {
MemUtil.INSTANCE.put(this, buffer.position(), buffer);
return buffer;
}
public ByteBuffer get(int index, ByteBuffer buffer) {
MemUtil.INSTANCE.put(this, index, buffer);
return buffer;
}
public IntBuffer get(IntBuffer buffer) {
MemUtil.INSTANCE.put(this, buffer.position(), buffer);
return buffer;
}
public IntBuffer get(int index, IntBuffer buffer) {
MemUtil.INSTANCE.put(this, index, buffer);
return buffer;
}
public Vector2ic getToAddress(long address) {
if (Options.NO_UNSAFE)
throw new UnsupportedOperationException("Not supported when using joml.nounsafe");
MemUtil.MemUtilUnsafe.put(this, address);
return this;
}
/**
* Subtract the supplied vector from this one and store the result in
* this.
*
* @param v
* the vector to subtract
* @return this
*/
public Vector2i sub(Vector2ic v) {
this.x = x - v.x();
this.y = y - v.y();
return this;
}
public Vector2i sub(Vector2ic v, Vector2i dest) {
dest.x = x - v.x();
dest.y = y - v.y();
return dest;
}
/**
* Decrement the components of this vector by the given values.
*
* @param x
* the x component to subtract
* @param y
* the y component to subtract
* @return this
*/
public Vector2i sub(int x, int y) {
this.x = this.x - x;
this.y = this.y - y;
return this;
}
public Vector2i sub(int x, int y, Vector2i dest) {
dest.x = this.x - x;
dest.y = this.y - y;
return dest;
}
public long lengthSquared() {
return x * x + y * y;
}
/**
* Get the length squared of a 2-dimensional single-precision vector.
*
* @param x The vector's x component
* @param y The vector's y component
*
* @return the length squared of the given vector
*/
public static long lengthSquared(int x, int y) {
return x * x + y * y;
}
public double length() {
return Math.sqrt(x * x + y * y);
}
/**
* Get the length of a 2-dimensional single-precision vector.
*
* @param x The vector's x component
* @param y The vector's y component
*
* @return the length squared of the given vector
*/
public static double length(int x, int y) {
return Math.sqrt(x * x + y * y);
}
public double distance(Vector2ic v) {
int dx = this.x - v.x();
int dy = this.y - v.y();
return Math.sqrt(dx * dx + dy * dy);
}
public double distance(int x, int y) {
int dx = this.x - x;
int dy = this.y - y;
return Math.sqrt(dx * dx + dy * dy);
}
public long distanceSquared(Vector2ic v) {
int dx = this.x - v.x();
int dy = this.y - v.y();
return dx * dx + dy * dy;
}
public long distanceSquared(int x, int y) {
int dx = this.x - x;
int dy = this.y - y;
return dx * dx + dy * dy;
}
public long gridDistance(Vector2ic v) {
return Math.abs(v.x() - x()) + Math.abs(v.y() - y());
}
public long gridDistance(int x, int y) {
return Math.abs(x - x()) + Math.abs(y - y());
}
/**
* Return the distance between (x1, y1) and (x2, y2).
*
* @param x1
* the x component of the first vector
* @param y1
* the y component of the first vector
* @param x2
* the x component of the second vector
* @param y2
* the y component of the second vector
* @return the euclidean distance
*/
public static double distance(int x1, int y1, int x2, int y2) {
int dx = x1 - x2;
int dy = y1 - y2;
return Math.sqrt(dx * dx + dy * dy);
}
/**
* Return the squared distance between (x1, y1) and (x2, y2).
*
* @param x1
* the x component of the first vector
* @param y1
* the y component of the first vector
* @param x2
* the x component of the second vector
* @param y2
* the y component of the second vector
* @return the euclidean distance squared
*/
public static long distanceSquared(int x1, int y1, int x2, int y2) {
int dx = x1 - x2;
int dy = y1 - y2;
return dx * dx + dy * dy;
}
/**
* Add v to this vector.
*
* @param v
* the vector to add
* @return this
*/
public Vector2i add(Vector2ic v) {
this.x = x + v.x();
this.y = y + v.y();
return this;
}
public Vector2i add(Vector2ic v, Vector2i dest) {
dest.x = x + v.x();
dest.y = y + v.y();
return dest;
}
/**
* Increment the components of this vector by the given values.
*
* @param x
* the x component to add
* @param y
* the y component to add
* @return this
*/
public Vector2i add(int x, int y) {
this.x = this.x + x;
this.y = this.y + y;
return this;
}
public Vector2i add(int x, int y, Vector2i dest) {
dest.x = this.x + x;
dest.y = this.y + y;
return dest;
}
/**
* Multiply all components of this {@link Vector2i} by the given scalar
* value.
*
* @param scalar
* the scalar to multiply this vector by
* @return this
*/
public Vector2i mul(int scalar) {
this.x = x * scalar;
this.y = y * scalar;
return this;
}
public Vector2i mul(int scalar, Vector2i dest) {
dest.x = x * scalar;
dest.y = y * scalar;
return dest;
}
/**
* Add the supplied vector by this one.
*
* @param v
* the vector to multiply
* @return this
*/
public Vector2i mul(Vector2ic v) {
this.x = x * v.x();
this.y = y * v.y();
return this;
}
public Vector2i mul(Vector2ic v, Vector2i dest) {
dest.x = x * v.x();
dest.y = y * v.y();
return dest;
}
/**
* Multiply the components of this vector by the given values.
*
* @param x
* the x component to multiply
* @param y
* the y component to multiply
* @return this
*/
public Vector2i mul(int x, int y) {
this.x = this.x * x;
this.y = this.y * y;
return this;
}
public Vector2i mul(int x, int y, Vector2i dest) {
dest.x = this.x * x;
dest.y = this.y * y;
return dest;
}
/**
* Set all components to zero.
*
* @return this
*/
public Vector2i zero() {
this.x = 0;
this.y = 0;
return this;
}
public void writeExternal(ObjectOutput out) throws IOException {
out.writeInt(x);
out.writeInt(y);
}
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
x = in.readInt();
y = in.readInt();
}
/**
* Negate this vector.
*
* @return this
*/
public Vector2i negate() {
this.x = -x;
this.y = -y;
return this;
}
public Vector2i negate(Vector2i dest) {
dest.x = -x;
dest.y = -y;
return dest;
}
/**
* Set the components of this vector to be the component-wise minimum of this and the other vector.
*
* @param v
* the other vector
* @return this
*/
public Vector2i min(Vector2ic v) {
this.x = x < v.x() ? x : v.x();
this.y = y < v.y() ? y : v.y();
return this;
}
public Vector2i min(Vector2ic v, Vector2i dest) {
dest.x = x < v.x() ? x : v.x();
dest.y = y < v.y() ? y : v.y();
return dest;
}
/**
* Set the components of this vector to be the component-wise maximum of this and the other vector.
*
* @param v
* the other vector
* @return this
*/
public Vector2i max(Vector2ic v) {
this.x = x > v.x() ? x : v.x();
this.y = y > v.y() ? y : v.y();
return this;
}
public Vector2i max(Vector2ic v, Vector2i dest) {
dest.x = x > v.x() ? x : v.x();
dest.y = y > v.y() ? y : v.y();
return dest;
}
public int maxComponent() {
int absX = Math.abs(x);
int absY = Math.abs(y);
if (absX >= absY)
return 0;
return 1;
}
public int minComponent() {
int absX = Math.abs(x);
int absY = Math.abs(y);
if (absX < absY)
return 0;
return 1;
}
/**
* Set this vector's components to their respective absolute values.
*
* @return this
*/
public Vector2i absolute() {
this.x = Math.abs(this.x);
this.y = Math.abs(this.y);
return this;
}
public Vector2i absolute(Vector2i dest) {
dest.x = Math.abs(this.x);
dest.y = Math.abs(this.y);
return dest;
}
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + x;
result = prime * result + y;
return result;
}
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
Vector2i other = (Vector2i) obj;
if (x != other.x) {
return false;
}
if (y != other.y) {
return false;
}
return true;
}
public boolean equals(int x, int y) {
if (this.x != x)
return false;
if (this.y != y)
return false;
return true;
}
/**
* Return a string representation of this vector.
*
* This method creates a new {@link DecimalFormat} on every invocation with the format string "0.000E0;-".
*
* @return the string representation
*/
public String toString() {
return Runtime.formatNumbers(toString(Options.NUMBER_FORMAT));
}
/**
* Return a string representation of this vector by formatting the vector components with the given {@link NumberFormat}.
*
* @param formatter
* the {@link NumberFormat} used to format the vector components with
* @return the string representation
*/
public String toString(NumberFormat formatter) {
return "(" + formatter.format(x) + " " + formatter.format(y) + ")";
}
}