avm2: Implement flash.geom.Point (#3681)
This commit is contained in:
parent
2790c89291
commit
a570d96433
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@ -103,6 +103,7 @@ pub struct SystemPrototypes<'gc> {
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pub xml_list: Object<'gc>,
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pub xml_list: Object<'gc>,
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pub display_object: Object<'gc>,
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pub display_object: Object<'gc>,
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pub shape: Object<'gc>,
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pub shape: Object<'gc>,
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pub point: Object<'gc>,
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}
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}
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impl<'gc> SystemPrototypes<'gc> {
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impl<'gc> SystemPrototypes<'gc> {
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@ -141,6 +142,7 @@ impl<'gc> SystemPrototypes<'gc> {
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xml_list: empty,
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xml_list: empty,
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display_object: empty,
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display_object: empty,
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shape: empty,
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shape: empty,
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point: empty,
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}
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}
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}
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}
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}
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}
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@ -662,6 +664,21 @@ pub fn load_player_globals<'gc>(
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script,
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script,
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)?;
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)?;
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// package `flash.geom`
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activation
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.context
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.avm2
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.system_prototypes
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.as_mut()
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.unwrap()
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.point = class(
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activation,
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flash::geom::point::create_class(mc),
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implicit_deriver,
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domain,
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script,
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)?;
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// package `flash.media`
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// package `flash.media`
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activation
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activation
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.context
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.context
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@ -2,6 +2,7 @@
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pub mod display;
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pub mod display;
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pub mod events;
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pub mod events;
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pub mod geom;
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pub mod media;
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pub mod media;
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pub mod system;
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pub mod system;
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pub mod utils;
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pub mod utils;
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@ -0,0 +1,3 @@
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//! `flash.geom` namespace
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pub mod point;
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@ -0,0 +1,399 @@
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//! `flash.geom.Point` builtin/prototype
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use crate::avm1::AvmString;
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use crate::avm2::class::{Class, ClassAttributes};
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use crate::avm2::method::Method;
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use crate::avm2::traits::Trait;
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use crate::avm2::{Activation, Error, Namespace, Object, QName, TObject, Value};
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use gc_arena::{GcCell, MutationContext};
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fn create_point<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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coords: (f64, f64),
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) -> Result<Value<'gc>, Error> {
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let proto = activation.context.avm2.prototypes().point;
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let args = [Value::Number(coords.0), Value::Number(coords.1)];
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let new_point = proto.construct(activation, &args)?;
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instance_init(activation, Some(new_point), &args)?;
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Ok(new_point.into())
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}
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/// Implements `flash.geom.Point`'s instance constructor.
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pub fn instance_init<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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this: Option<Object<'gc>>,
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args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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let _ = set_to(activation, this, args)?;
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Ok(Value::Undefined)
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}
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fn coords<'gc>(
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this: &mut Object<'gc>,
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activation: &mut Activation<'_, 'gc, '_>,
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) -> Result<(f64, f64), Error> {
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let x = this
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.get_property(*this, &QName::new(Namespace::public(), "x"), activation)?
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.coerce_to_number(activation)?;
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let y = this
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.get_property(*this, &QName::new(Namespace::public(), "y"), activation)?
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.coerce_to_number(activation)?;
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Ok((x, y))
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}
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fn set_coords<'gc>(
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this: &mut Object<'gc>,
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activation: &mut Activation<'_, 'gc, '_>,
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value: (f64, f64),
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) -> Result<(), Error> {
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this.set_property(
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*this,
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&QName::new(Namespace::public(), "x"),
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value.0.into(),
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activation,
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)?;
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this.set_property(
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*this,
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&QName::new(Namespace::public(), "y"),
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value.1.into(),
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activation,
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)?;
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Ok(())
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}
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/// Implements `flash.geom.Point`'s class initializer.
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pub fn class_init<'gc>(
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_activation: &mut Activation<'_, 'gc, '_>,
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_this: Option<Object<'gc>>,
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_args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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Ok(Value::Undefined)
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}
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/// Implements the `length` property
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pub fn length<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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this: Option<Object<'gc>>,
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_args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if let Some(mut this) = this {
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let (x, y) = coords(&mut this, activation)?;
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return Ok((x * x + y * y).sqrt().into());
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}
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Ok(Value::Undefined)
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}
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/// Implements `add`
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pub fn add<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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this: Option<Object<'gc>>,
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args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if let Some(mut this) = this {
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if let Some(other) = args.get(0) {
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let mut other_obj = other.coerce_to_object(activation)?;
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let (our_x, our_y) = coords(&mut this, activation)?;
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let (their_x, their_y) = coords(&mut other_obj, activation)?;
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return create_point(activation, (our_x + their_x, our_y + their_y));
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}
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}
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Ok(Value::Undefined)
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}
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/// Implements `clone`
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pub fn clone<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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this: Option<Object<'gc>>,
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_args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if let Some(mut this) = this {
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let (our_x, our_y) = coords(&mut this, activation)?;
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return create_point(activation, (our_x, our_y));
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}
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Ok(Value::Undefined)
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}
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/// Implements `copyFrom`
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pub fn copy_from<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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this: Option<Object<'gc>>,
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args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if let Some(mut this) = this {
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if let Some(other) = args.get(0) {
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let mut other_obj = other.coerce_to_object(activation)?;
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let (their_x, their_y) = coords(&mut other_obj, activation)?;
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set_coords(&mut this, activation, (their_x, their_y))?;
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}
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}
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Ok(Value::Undefined)
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}
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/// Implements `distance`
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pub fn distance<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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_this: Option<Object<'gc>>,
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args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if let Some(first) = args.get(0) {
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let mut first_object = first.coerce_to_object(activation)?;
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if let Some(second) = args.get(1) {
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let mut second_obj = second.coerce_to_object(activation)?;
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let (our_x, our_y) = coords(&mut first_object, activation)?;
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let (their_x, their_y) = coords(&mut second_obj, activation)?;
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return Ok(((our_x - their_x).powf(2.0) + (our_y - their_y).powf(2.0))
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.sqrt()
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.into());
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}
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}
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Ok(Value::Undefined)
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}
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/// Implements `equals`
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#[allow(clippy::float_cmp)]
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pub fn equals<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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this: Option<Object<'gc>>,
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args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if let Some(mut this) = this {
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if let Some(other) = args.get(0) {
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let mut other_obj = other.coerce_to_object(activation)?;
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let (our_x, our_y) = coords(&mut this, activation)?;
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let (their_x, their_y) = coords(&mut other_obj, activation)?;
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return Ok((our_x == their_x && our_y == their_y).into());
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}
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}
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Ok(Value::Undefined)
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}
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/// Implements `interpolate`
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pub fn interpolate<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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_this: Option<Object<'gc>>,
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args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if args.len() < 3 {
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return create_point(activation, (f64::NAN, f64::NAN));
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}
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let (a_x, a_y) = coords(
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&mut args.get(0).unwrap().coerce_to_object(activation)?,
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activation,
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)?;
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let (b_x, b_y) = coords(
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&mut args.get(1).unwrap().coerce_to_object(activation)?,
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activation,
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)?;
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let f = args.get(2).unwrap().coerce_to_number(activation)?;
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let result = (b_x - (b_x - a_x) * f, b_y - (b_y - a_y) * f);
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create_point(activation, result)
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}
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/// Implements `normalize`
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pub fn normalize<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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this: Option<Object<'gc>>,
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args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if let Some(mut this) = this {
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let thickness = args
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.get(0)
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.unwrap_or(&0.into())
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.coerce_to_number(activation)?;
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let length = length(activation, Some(this), args)?.coerce_to_number(activation)?;
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if length > 0.0 {
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let inv_d = thickness / length;
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let (old_x, old_y) = coords(&mut this, activation)?;
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set_coords(&mut this, activation, (old_x * inv_d, old_y * inv_d))?;
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}
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}
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Ok(Value::Undefined)
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}
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/// Implements `offset`
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pub fn offset<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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this: Option<Object<'gc>>,
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args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if let Some(mut this) = this {
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let (x, y) = coords(&mut this, activation)?;
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let dx = args
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.get(0)
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.unwrap_or(&0.into())
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.coerce_to_number(activation)?;
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let dy = args
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.get(1)
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.unwrap_or(&0.into())
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.coerce_to_number(activation)?;
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set_coords(&mut this, activation, (x + dx, y + dy))?;
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}
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Ok(Value::Undefined)
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}
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/// Implements `polar`
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pub fn polar<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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_this: Option<Object<'gc>>,
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args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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let length = args
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.get(0)
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.unwrap_or(&Value::Undefined)
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.coerce_to_number(activation)?;
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let angle = args
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.get(1)
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.unwrap_or(&Value::Undefined)
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.coerce_to_number(activation)?;
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create_point(activation, (length * angle.cos(), length * angle.sin()))
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}
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/// Implements `setTo`
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pub fn set_to<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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this: Option<Object<'gc>>,
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args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if let Some(mut this) = this {
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let x = args
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.get(0)
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.unwrap_or(&0.into())
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.coerce_to_number(activation)?;
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let y = args
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.get(1)
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.unwrap_or(&0.into())
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.coerce_to_number(activation)?;
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set_coords(&mut this, activation, (x, y))?;
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}
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Ok(Value::Undefined)
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}
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/// Implements `subtract`
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pub fn subtract<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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this: Option<Object<'gc>>,
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args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if let Some(mut this) = this {
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if let Some(other) = args.get(0) {
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let mut other_obj = other.coerce_to_object(activation)?;
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let (our_x, our_y) = coords(&mut this, activation)?;
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let (their_x, their_y) = coords(&mut other_obj, activation)?;
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return create_point(activation, (our_x - their_x, our_y - their_y));
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}
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}
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Ok(Value::Undefined)
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}
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/// Implements `toString`
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pub fn to_string<'gc>(
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activation: &mut Activation<'_, 'gc, '_>,
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this: Option<Object<'gc>>,
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_args: &[Value<'gc>],
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) -> Result<Value<'gc>, Error> {
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if let Some(mut this) = this {
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let (x, y) = coords(&mut this, activation)?;
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return Ok(
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AvmString::new(activation.context.gc_context, format!("(x={}, y={})", x, y)).into(),
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);
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}
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Ok(Value::Undefined)
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}
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/// Construct `Point`'s class.
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||||||
|
pub fn create_class<'gc>(mc: MutationContext<'gc, '_>) -> GcCell<'gc, Class<'gc>> {
|
||||||
|
let class = Class::new(
|
||||||
|
QName::new(Namespace::package("flash.geom"), "Point"),
|
||||||
|
Some(QName::new(Namespace::public(), "Object").into()),
|
||||||
|
Method::from_builtin(instance_init),
|
||||||
|
Method::from_builtin(class_init),
|
||||||
|
mc,
|
||||||
|
);
|
||||||
|
|
||||||
|
let mut write = class.write(mc);
|
||||||
|
write.set_attributes(ClassAttributes::SEALED);
|
||||||
|
|
||||||
|
write.define_instance_trait(Trait::from_getter(
|
||||||
|
QName::new(Namespace::public(), "length"),
|
||||||
|
Method::from_builtin(length),
|
||||||
|
));
|
||||||
|
write.define_instance_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "add"),
|
||||||
|
Method::from_builtin(add),
|
||||||
|
));
|
||||||
|
write.define_instance_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "clone"),
|
||||||
|
Method::from_builtin(clone),
|
||||||
|
));
|
||||||
|
write.define_instance_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "copyFrom"),
|
||||||
|
Method::from_builtin(copy_from),
|
||||||
|
));
|
||||||
|
write.define_class_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "distance"),
|
||||||
|
Method::from_builtin(distance),
|
||||||
|
));
|
||||||
|
write.define_instance_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "equals"),
|
||||||
|
Method::from_builtin(equals),
|
||||||
|
));
|
||||||
|
write.define_class_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "interpolate"),
|
||||||
|
Method::from_builtin(interpolate),
|
||||||
|
));
|
||||||
|
write.define_instance_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "normalize"),
|
||||||
|
Method::from_builtin(normalize),
|
||||||
|
));
|
||||||
|
write.define_instance_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "offset"),
|
||||||
|
Method::from_builtin(offset),
|
||||||
|
));
|
||||||
|
write.define_class_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "polar"),
|
||||||
|
Method::from_builtin(polar),
|
||||||
|
));
|
||||||
|
write.define_instance_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "setTo"),
|
||||||
|
Method::from_builtin(set_to),
|
||||||
|
));
|
||||||
|
write.define_instance_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "subtract"),
|
||||||
|
Method::from_builtin(subtract),
|
||||||
|
));
|
||||||
|
write.define_instance_trait(Trait::from_method(
|
||||||
|
QName::new(Namespace::public(), "toString"),
|
||||||
|
Method::from_builtin(to_string),
|
||||||
|
));
|
||||||
|
|
||||||
|
class
|
||||||
|
}
|
|
@ -532,6 +532,7 @@ swf_tests! {
|
||||||
(as3_regexp_constr, "avm2/regexp_constr", 1),
|
(as3_regexp_constr, "avm2/regexp_constr", 1),
|
||||||
(as3_regexp_test, "avm2/regexp_test", 1),
|
(as3_regexp_test, "avm2/regexp_test", 1),
|
||||||
(as3_regexp_exec, "avm2/regexp_exec", 1),
|
(as3_regexp_exec, "avm2/regexp_exec", 1),
|
||||||
|
(as3_point, "avm2/point", 1),
|
||||||
}
|
}
|
||||||
|
|
||||||
// TODO: These tests have some inaccuracies currently, so we use approx_eq to test that numeric values are close enough.
|
// TODO: These tests have some inaccuracies currently, so we use approx_eq to test that numeric values are close enough.
|
||||||
|
|
|
@ -0,0 +1,210 @@
|
||||||
|
package {
|
||||||
|
public class Test {
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
import flash.geom.Point;
|
||||||
|
|
||||||
|
trace("/// Constructors");
|
||||||
|
trace("// new Point()");
|
||||||
|
trace(new Point());
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// new Point(1)");
|
||||||
|
trace(new Point(1));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// new Point(1, 2)");
|
||||||
|
trace(new Point(1, 2));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// new Point({}, 2)");
|
||||||
|
var temp = {};
|
||||||
|
trace(new Point(temp, 2));
|
||||||
|
trace("");
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("/// Add");
|
||||||
|
|
||||||
|
var point2 = new Point();
|
||||||
|
trace("// point.add(new Point(1, 2))");
|
||||||
|
trace(point2.add(new Point(1, 2)));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// point");
|
||||||
|
trace(point2);
|
||||||
|
trace("");
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("/// Subtract");
|
||||||
|
|
||||||
|
var point3 = new Point();
|
||||||
|
trace("// point.subtract(new Point(1, 2))");
|
||||||
|
trace(point3.subtract(new Point(1, 2)));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// point");
|
||||||
|
trace(point3);
|
||||||
|
trace("");
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("/// Distance");
|
||||||
|
|
||||||
|
trace("// Point.distance(new Point(), new Point())");
|
||||||
|
trace(Point.distance(new Point(), new Point()));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// Point.distance(new Point(-100, 200), new Point(100, 200))");
|
||||||
|
trace(Point.distance(new Point(-100, 200), new Point(100, 200)));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("/// Equals");
|
||||||
|
|
||||||
|
var point4 = new Point();
|
||||||
|
trace("// point.equals(new Point(1, 2))");
|
||||||
|
trace(point4.equals(new Point(1, 2)));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
|
||||||
|
trace("// point.equals(point)");
|
||||||
|
trace(point4.equals(point4));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// point");
|
||||||
|
trace(point4);
|
||||||
|
trace("");
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
|
||||||
|
trace("/// Clone");
|
||||||
|
|
||||||
|
var point5 = new Point(1, 2);
|
||||||
|
var clone = point5.clone();
|
||||||
|
trace("// point");
|
||||||
|
trace(point5);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// clone");
|
||||||
|
trace(clone);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// point === clone");
|
||||||
|
trace(point5 === clone);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// point.equals(clone)");
|
||||||
|
trace(point5.equals(clone));
|
||||||
|
trace("");
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("/// Interpolate");
|
||||||
|
trace("// Point.interpolate(new Point(-100, -200), new Point(100, 200), -1)");
|
||||||
|
trace(Point.interpolate(new Point(-100, -200), new Point(100, 200), -1));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// Point.interpolate(new Point(-100, -200), new Point(100, 200), 0)");
|
||||||
|
trace(Point.interpolate(new Point(-100, -200), new Point(100, 200), 0));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// Point.interpolate(new Point(-100, -200), new Point(100, 200), 0.5)");
|
||||||
|
trace(Point.interpolate(new Point(-100, -200), new Point(100, 200), 0.5));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// Point.interpolate(new Point(-100, -200), new Point(100, 200), 1)");
|
||||||
|
trace(Point.interpolate(new Point(-100, -200), new Point(100, 200), 1));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// Point.interpolate(new Point(-100, -200), new Point(100, 200), 2)");
|
||||||
|
trace(Point.interpolate(new Point(-100, -200), new Point(100, 200), 2));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("/// length");
|
||||||
|
trace("new Point().length");
|
||||||
|
trace(new Point().length);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("new Point(100, 0).length");
|
||||||
|
trace(new Point(100, 0).length);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("new Point(0, -200).length");
|
||||||
|
trace(new Point(0, -200).length);
|
||||||
|
trace("");
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("/// Normalize");
|
||||||
|
trace("// new Point() normalize(10)");
|
||||||
|
var point6 = new Point();
|
||||||
|
point6.normalize(10);
|
||||||
|
trace(point6);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// new Point() normalize(-5)");
|
||||||
|
var point7 = new Point();
|
||||||
|
point7.normalize(-5);
|
||||||
|
trace(point7);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// new Point(100, 200) normalize(10)");
|
||||||
|
var point8 = new Point(100, 200);
|
||||||
|
point8.normalize(10);
|
||||||
|
trace(point8);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// new Point(100, 200) normalize(-5)");
|
||||||
|
var point9 = new Point(100, 200);
|
||||||
|
point9.normalize(-5);
|
||||||
|
trace(point9);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// new Point(-200, 100) normalize(10)");
|
||||||
|
var point10 = new Point(-200, 100);
|
||||||
|
point10.normalize(10);
|
||||||
|
trace(point10);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// new Point(-200, 100) normalize(-5)");
|
||||||
|
var point11 = new Point(-200, 100);
|
||||||
|
point11.normalize(-5);
|
||||||
|
trace(point11);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// new Point(undefined, 100) normalize(1)");
|
||||||
|
var point14 = new Point(undefined, 100);
|
||||||
|
point14.normalize(1);
|
||||||
|
trace(point14);
|
||||||
|
trace("");
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// new Point(100, null) normalize(1)");
|
||||||
|
var point15 = new Point(100, null);
|
||||||
|
point15.normalize(1);
|
||||||
|
trace(point15);
|
||||||
|
trace("");
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("/// Offset");
|
||||||
|
var point16 = new Point();
|
||||||
|
trace("// point = new Point()");
|
||||||
|
trace(point16);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
point16.offset(100, 200);
|
||||||
|
trace("// point.offset(100, 200)");
|
||||||
|
trace(point16);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
point16.offset(-1000, -2000);
|
||||||
|
trace("// point.offset(-1000, -2000)");
|
||||||
|
trace(point16);
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
|
||||||
|
trace("/// polar");
|
||||||
|
trace("// Point.polar(5, Math.atan(3/4))");
|
||||||
|
trace(Point.polar(5, Math.atan(3/4)));
|
||||||
|
trace("");
|
||||||
|
|
||||||
|
trace("// Point.polar(0, Math.atan(3/4))");
|
||||||
|
trace(Point.polar(0, Math.atan(3/4)));
|
||||||
|
trace("");
|
|
@ -0,0 +1,133 @@
|
||||||
|
/// Constructors
|
||||||
|
// new Point()
|
||||||
|
(x=0, y=0)
|
||||||
|
|
||||||
|
// new Point(1)
|
||||||
|
(x=1, y=0)
|
||||||
|
|
||||||
|
// new Point(1, 2)
|
||||||
|
(x=1, y=2)
|
||||||
|
|
||||||
|
// new Point({}, 2)
|
||||||
|
(x=NaN, y=2)
|
||||||
|
|
||||||
|
|
||||||
|
/// Add
|
||||||
|
// point.add(new Point(1, 2))
|
||||||
|
(x=1, y=2)
|
||||||
|
|
||||||
|
// point
|
||||||
|
(x=0, y=0)
|
||||||
|
|
||||||
|
|
||||||
|
/// Subtract
|
||||||
|
// point.subtract(new Point(1, 2))
|
||||||
|
(x=-1, y=-2)
|
||||||
|
|
||||||
|
// point
|
||||||
|
(x=0, y=0)
|
||||||
|
|
||||||
|
|
||||||
|
/// Distance
|
||||||
|
// Point.distance(new Point(), new Point())
|
||||||
|
0
|
||||||
|
|
||||||
|
// Point.distance(new Point(-100, 200), new Point(100, 200))
|
||||||
|
200
|
||||||
|
|
||||||
|
/// Equals
|
||||||
|
// point.equals(new Point(1, 2))
|
||||||
|
false
|
||||||
|
|
||||||
|
// point.equals(point)
|
||||||
|
true
|
||||||
|
|
||||||
|
// point
|
||||||
|
(x=0, y=0)
|
||||||
|
|
||||||
|
|
||||||
|
/// Clone
|
||||||
|
// point
|
||||||
|
(x=1, y=2)
|
||||||
|
|
||||||
|
// clone
|
||||||
|
(x=1, y=2)
|
||||||
|
|
||||||
|
// point === clone
|
||||||
|
false
|
||||||
|
|
||||||
|
// point.equals(clone)
|
||||||
|
true
|
||||||
|
|
||||||
|
|
||||||
|
/// Interpolate
|
||||||
|
// Point.interpolate(new Point(-100, -200), new Point(100, 200), -1)
|
||||||
|
(x=300, y=600)
|
||||||
|
|
||||||
|
// Point.interpolate(new Point(-100, -200), new Point(100, 200), 0)
|
||||||
|
(x=100, y=200)
|
||||||
|
|
||||||
|
// Point.interpolate(new Point(-100, -200), new Point(100, 200), 0.5)
|
||||||
|
(x=0, y=0)
|
||||||
|
|
||||||
|
// Point.interpolate(new Point(-100, -200), new Point(100, 200), 1)
|
||||||
|
(x=-100, y=-200)
|
||||||
|
|
||||||
|
// Point.interpolate(new Point(-100, -200), new Point(100, 200), 2)
|
||||||
|
(x=-300, y=-600)
|
||||||
|
|
||||||
|
/// length
|
||||||
|
new Point().length
|
||||||
|
0
|
||||||
|
|
||||||
|
new Point(100, 0).length
|
||||||
|
100
|
||||||
|
|
||||||
|
new Point(0, -200).length
|
||||||
|
200
|
||||||
|
|
||||||
|
|
||||||
|
/// Normalize
|
||||||
|
// new Point() normalize(10)
|
||||||
|
(x=0, y=0)
|
||||||
|
|
||||||
|
// new Point() normalize(-5)
|
||||||
|
(x=0, y=0)
|
||||||
|
|
||||||
|
// new Point(100, 200) normalize(10)
|
||||||
|
(x=4.47213595499958, y=8.94427190999916)
|
||||||
|
|
||||||
|
// new Point(100, 200) normalize(-5)
|
||||||
|
(x=-2.23606797749979, y=-4.47213595499958)
|
||||||
|
|
||||||
|
// new Point(-200, 100) normalize(10)
|
||||||
|
(x=-8.94427190999916, y=4.47213595499958)
|
||||||
|
|
||||||
|
// new Point(-200, 100) normalize(-5)
|
||||||
|
(x=4.47213595499958, y=-2.23606797749979)
|
||||||
|
|
||||||
|
// new Point(undefined, 100) normalize(1)
|
||||||
|
(x=NaN, y=100)
|
||||||
|
|
||||||
|
|
||||||
|
// new Point(100, null) normalize(1)
|
||||||
|
(x=1, y=0)
|
||||||
|
|
||||||
|
|
||||||
|
/// Offset
|
||||||
|
// point = new Point()
|
||||||
|
(x=0, y=0)
|
||||||
|
|
||||||
|
// point.offset(100, 200)
|
||||||
|
(x=100, y=200)
|
||||||
|
|
||||||
|
// point.offset(-1000, -2000)
|
||||||
|
(x=-900, y=-1800)
|
||||||
|
|
||||||
|
/// polar
|
||||||
|
// Point.polar(5, Math.atan(3/4))
|
||||||
|
(x=4, y=3)
|
||||||
|
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// Point.polar(0, Math.atan(3/4))
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(x=0, y=0)
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Reference in New Issue