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Rect.js
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Rect.js
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const temp0 = [0,0];
/*--------------------------------------------------------------------------------------------------------------------*/
// CREATE
/*--------------------------------------------------------------------------------------------------------------------*/
/**
* Creates a empty rectangle-
* @returns {number[]}
*/
export function create(){
return [0,0,0,0];
}
/**
* Creates a rectangle.
* @param x
* @param y
* @param w
* @param h
* @returns {*[]}
*/
export function create4(x, y, w, h){
return [x,y,w,h];
}
/**
* Creates a rectangle.
* @param p
* @param s
* @returns {*[]}
*/
export function create2v(p,s){
return [p[0],p[1],s[0],s[1]];
}
/**
* Creates a rectangle with a specific size.
* @param size
*/
export function createFromSize(size){
return createFromSize2(size[0],size[1]);
}
/**
* Creates a rectangle with a specific size.
* @param width
* @param height
* @returns {*[]}
*/
export function createFromSize2(width,height){
return [0,0,width,height];
}
/**
* Creates a rectangle with a specific size.
* @param size
* @returns {*[]}
*/
export function createFromSize1(size){
return [0,0,size,size];
}
/**
* Creates a rectangle with a specific origin.
* @param pos
*/
export function createFromOrigin(pos){
return createFromOrigin2(pos[0],pos[1]);
}
/**
* Creates a rectangle with specifoc origin.
* @param x
* @param y
* @returns {number[]}
*/
export function createFromOrigin2(x,y){
return [x,y,0,0];
}
/*--------------------------------------------------------------------------------------------------------------------*/
// COPY / SET
/*--------------------------------------------------------------------------------------------------------------------*/
/**
* Returns a copy of the rectangle.
* @param rect
* @returns {number[]}
*/
export function copy(rect){
return rect.slice(0);
}
/**
* Sets a rectangle from another rectangle.
* @param recta
* @param rectb
* @returns {*}
*/
export function set(recta,rectb){
recta[0] = rectb[0];
recta[1] = rectb[1];
recta[2] = rectb[2];
recta[3] = rectb[3];
return recta;
}
/**
* Sets a rectangle from position and size.
* @param rect
* @param p
* @param s
*/
export function set2v(rect,p,s){
return set4(rect,p[0],p[1],s[0],s[1]);
}
/**
* Sets a rectangle from position and size.
* @param rect
* @param x
* @param y
* @param w
* @param h
* @returns {*}
*/
export function set4(rect,x,y,w,h){
rect[0] = x;
rect[1] = y;
rect[2] = w;
rect[3] = h;
return rect;
}
/*--------------------------------------------------------------------------------------------------------------------*/
// ORIGIN
/*--------------------------------------------------------------------------------------------------------------------*/
/**
* Sets the origin of the rectangle.
* @param rect
* @param origin
*/
export function setOrigin(rect,origin){
return setOrigin2(rect,origin[0],origin[1]);
}
/**
* Sets the origin of the rectangle.
* @param rect
* @param ox
* @param oy
* @returns {*}
*/
export function setOrigin2(rect,ox,oy){
rect[0] = ox;
rect[1] = oy;
return rect;
}
/**
* Returns the origin of the rectangle.
* @param rect
* @param out
* @returns {*|number[]}
*/
export function getOrigin(rect,out){
out = out || [0,0];
out[0] = rect[0];
out[1] = rect[1];
return out;
}
/**
* Offsets the rectangle by its center.
* @param rect
* @returns {*}
*/
export function setCenterToOrigin(rect){
return setOrigin2(rect,rect[0] - rect[2] * 0.5, rect[1] - rect[3] * 0.5);
}
/**
* Centers the rectangle to another rectangle.
* @param recta
* @param rectb
* @returns {*}
*/
export function setCenterToRect(recta,rectb){
return setCenterToOrigin(setOrigin(recta,getCenter(rectb,temp0)));
}
/**
* Offsets the rectangle origin.
* @param rect
* @param dxy
*/
export function offset(rect,dxy){
return offset2(rect,dxy[0],dxy[0]);
}
/**
* Offsets the rectangle origin.
* @param rect
* @param d
*/
export function offset1(rect,d){
return offset2(rect,d,d);
}
/**
* Offsets the rectangle origin.
* @param rect
* @param dx
* @param dy
* @returns {*}
*/
export function offset2(rect,dx,dy){
rect[0] += dx;
rect[1] += dy;
return rect;
}
/**
* Returns an offsetted copy of the rectangle.
* @param rect
* @param dxy
*/
export function offseted(rect,dxy){
return offset(copy(rect),dxy);
}
/**
* Returns an offsetted copy of the rectangle.
* @param rect
* @param d
*/
export function offseted1(rect,d){
return offset1(copy(rect),d);
}
/**
* Returns an offsetted copy of the rectangle.
* @param rect
* @param dx
* @param dy
* @returns {*}
*/
export function offsetted2(rect,dx,dy){
return offset2(copy(rect),dx,dy);
}
/*--------------------------------------------------------------------------------------------------------------------*/
// SIZE
/*--------------------------------------------------------------------------------------------------------------------*/
/**
* Sets the size of a rectangle.
* @param rect
* @param v
*/
export function setSize(rect,v){
return setSize2(rect,v[0],v[1]);
}
/**
* Sets the size of a rectangle.
* @param rect
* @param w
* @param h
* @returns {*}
*/
export function setSize2(rect,w,h){
rect[2] = w;
rect[3] = h;
return rect;
}
/**
* Sets the size of a rectangle.
* @param rect
* @param out
* @returns {*|number[]}
*/
export function getSize(rect,out){
out = out || [0,0];
out[0] = rect[2];
out[1] = rect[3];
return out;
}
/**
* Sets the rectangle size to positive values.
* @param rect
* @returns {*}
*/
export function abs(rect){
rect[2] = Math.abs(rect[2]);
rect[3] = Math.abs(rect[3]);
return rect;
}
/**
* Returns the apsect-ratio of the rectangle.
* @param rect
* @returns {number}
*/
export function getAspectRatio(rect){
return rect[2] / rect[3];
}
/*--------------------------------------------------------------------------------------------------------------------*/
// CONVERT
/*--------------------------------------------------------------------------------------------------------------------*/
/**
* Normalizes the rectangle.
* @param rect
* @returns {*}
*/
export function normalize(rect){
const max = Math.max(rect[2],rect[3]);
rect[0] = rect[1] = 0;
rect[2] /= max;
rect[3] /= max;
return rect;
}
/**
* Returns a normalized copy of the rectangle.
* @param rect
* @param out
* @returns {*}
*/
export function normalized(rect,out){
return normalize(set(out || create(),rect));
}
/**
* Floors a rectangles origin and size.
* @param rect
* @returns {*}
*/
export function floor(rect){
rect[0] = Math.floor(rect[0]);
rect[1] = Math.floor(rect[1]);
rect[2] = Math.floor(rect[2]);
rect[3] = Math.floor(rect[3]);
return rect;
}
/**
* Returns a floored copy of the rectangle.
* @param rect
* @returns {*}
*/
export function floored(rect){
return floor(copy(rect));
}
/*--------------------------------------------------------------------------------------------------------------------*/
// CONSTRAIN
/*--------------------------------------------------------------------------------------------------------------------*/
/**
* Clamps a rectangle within another rectangle.
* @param recta
* @param rectb
*/
export function clamp(recta,rectb){
return clamp4(recta,rectb[0],rectb[1],rectb[2],rectb[3]);
}
/**
* Clamps a rectangle within another rectangle.
* @param rect
* @param x
* @param y
* @param width
* @param height
* @returns {*}
*/
export function clamp4(rect,x,y,width,height){
const xr = rect[0];
const yr = rect[1];
const wr = rect[2];
const hr = rect[3];
if(wr >= width){
rect[0] = xr;
} else {
rect[0] = Math.max(x,Math.min(xr,x + width - wr));
}
if(hr >= height){
rect[1] = yr;
} else {
rect[1] = Math.max(y,Math.min(yr,y + height - hr));
}
return rect;
}
/**
* Returns a clamped copy of the rectangle.
* @param recta
* @param rectb
*/
export function clamped(recta,rectb){
return clamp(copy(recta),rectb);
}
/**
* Returns a clamped copy of the rectangle.
* @param rect
* @param x
* @param y
* @param width
* @param height
* @returns {*}
*/
export function clamped4(rect,x,y,width,height){
return clamp4(copy(rect),x,y,width,height);
}
export function clampPoint(rect,point){
point[0] = Math.max(rect[0],Math.min(point[0],rect[0] + rect[2]));
point[1] = Math.max(rect[1],Math.min(point[1],rect[1] + rect[3]));
return point;
}
export function clampedPoint(rect,point){
return clampPoint(rect,point.slice(0));
}
/**
* Fits a rectangle vertically into another rectangle preserving its original aspect ratio.
* @param recta
* @param rectb
* @returns {*}
*/
export function fitVertical(recta, rectb){
recta[2] = rectb[2] * (recta[2] / recta[3]);
recta[3] = rectb[3];
return setCenterToRect(recta,rectb);
}
/**
* Fits a rectangle horizontally into another rectangle preserving its original aspect ratio.
* @param recta
* @param rectb
* @returns {*}
*/
export function fitHorizontal(recta,rectb){
recta[2] = rectb[2];
recta[3] = rectb[3] * (recta[3] / recta[2]);
return setCenterToRect(recta,rectb);
}
export function fit(recta,rectb){
if(recta[2] >= rectb[2]){
}
return recta[2] >= rectb[2] ? fitHorizontal(recta,rectb) : fitVertical(recta,rectb);
}
export function fittedVertical(recta,rectb){
return fitVertical(copy(recta),rectb);
}
export function fittedHorizontal(recta,rectb){
return fitHorizontal(copy(recta),rectb);
}
export function fitted(recta,rectb){
return fit(copy(recta),rectb);
}
/*--------------------------------------------------------------------------------------------------------------------*/
// SCALE
/*--------------------------------------------------------------------------------------------------------------------*/
/**
* Scales a rectangle relative to its origin.
* @param rect
* @param s
* @returns {*}
*/
export function scale(rect,s){
rect[0] *= s;
rect[1] *= s;
rect[2] *= s;
rect[3] *= s;
return rect;
}
/**
* Scales a rectangle relative to its origin.
* @param rect
* @param sx
* @param sy
* @returns {*}
*/
export function scale2(rect,sx,sy){
rect[0] *= sx;
rect[1] *= sy;
rect[2] *= sx;
rect[3] *= sy;
return rect;
}
/**
* Scales a rectangles size.
* @param rect
* @param s
*/
export function scaleSize(rect,s){
return scaleSize2(rect,s,s);
}
/**
* Scales a rectangles size.
* @param rect
* @param s
*/
export function scaleSize1(rect,s){
return scaleSize2(rect,s,s);
}
/**
* Scales a rectangles size.
* @param rect
* @param sx
* @param sy
* @returns {*}
*/
export function scaleSize2(rect,sx,sy){
rect[2] *= sx;
rect[3] *= sy;
return rect;
}
/*--------------------------------------------------------------------------------------------------------------------*/
// CONTAINS
/*--------------------------------------------------------------------------------------------------------------------*/
/**
* Returns true it the rectangle contains the specified point.
* @param rect
* @param point
*/
export function containsPoint(rect,point){
return containsPoint2(rect,point[0],point[1]);
}
/**
* Returns true if the rectangle contains the specified point.
* @param rect
* @param x
* @param y
* @returns {boolean}
*/
export function containsPoint2(rect,x,y){
const rx = rect[0];
const ry = rect[1];
return x >= rx && y >= ry && x <= (rx + rect[2]) && y <= (ry + rect[3]);
}
/**
* Returns true if the rectangle contains the specified rectangle.
* @param recta
* @param rectb
*/
export function containsRect(recta,rectb){
return containsRect4(recta,rectb[0],rectb[1],rectb[2],rectb[3]);
}
/**
* Returns true if the rectangle contains the specified rectangle.
* @param rect
* @param x
* @param y
* @param w
* @param h
* @returns {boolean}
*/
export function containsRect4(rect,x,y,w,h){
return (x + w) <= (rect[0] + rect[2]) && (y + h) <= (rect[1] + rect[3]);
}
/**
* Returns true if the rectangles size is equal or greater than the size specified.
* @param rect
* @param size
*/
export function containsSize(rect,size){
return containsSize2(rect,size[0],size[1]);
}
/**
* Returns true fit the rectangles size is equal or greater than the size specified.
* @param rect
* @param w
* @param h
* @returns {boolean}
*/
export function containsSize2(rect,w,h){
return w <= rect[2] && h <= rect[3];
}
/*--------------------------------------------------------------------------------------------------------------------*/
// INSET
/*--------------------------------------------------------------------------------------------------------------------*/
/**
* Insets or extrudes a rectangle.
* @param rect
* @param d
*/
export function inset1(rect,d){
return inset2(rect,d,d);
}
/**
* Insets or extrudes a rectangle.
* @param rect
* @param dx
* @param dy
* @returns {*}
*/
export function inset2(rect,dx,dy){
const w = rect[2] - dx;
const h = rect[3] - dy;
const c = getCenter(rect,temp0);
rect[0] = c[0] - w * 0.5;
rect[1] = c[1] - h * 0.5;
rect[2] = w;
rect[3] = h;
return rect;
}
/**
* Insets or extrudes a rectangle.
* @param rect
* @param dxy
* @returns {*}
*/
export function inset(rect,dxy){
return inset2(rect,dxy[0],dxy[1]);
}
/**
* Returns an insetted or extruded copy of a rectangle.
* @param rect
* @param d
*/
export function insetted1(rect,d){
return inset1(copy(rect),d);
}
/**
* Returns an insetted or extruded copy of a rectangle.
* @param rect
* @param dx
* @param dy
* @returns {*}
*/
export function insetted2(rect,dx,dy){
return inset2(copy(rect),dx,dy);
}
/**
* Returns an insetted or extruded copy of a rectangle.
* @param rect
* @param dxy
* @returns {*}
*/
export function insettted(rect,dxy){
return inset(copy(rect),dxy);
}
/*--------------------------------------------------------------------------------------------------------------------*/
// POINTS
/*--------------------------------------------------------------------------------------------------------------------*/
/**
* Returns the center position.
* @param rect
* @param out
* @returns {*|number[]}
*/
export function getCenter(rect,out){
out = out || [0,0];
out[0] = rect[0] + rect[2] * 0.5;
out[1] = rect[1] + rect[3] * 0.5;
return out;
}
/**
* Returns the top-left position.
* @param rect
* @param out
* @returns {*|number[]}
*/
export function getTL(rect,out){
out = out || [0,0];
out[0] = rect[0];
out[1] = rect[1];
return out;
}
/**
* Returns the top-right position.
* @param rect
* @param out
* @returns {*|number[]}
*/
export function getTR(rect,out){
out = out || [0,0];
out[0] = rect[0] + rect[2];
out[1] = rect[1];
return out;
}
/**
* Returns the bottom left position.
* @param rect
* @param out
* @returns {*|number[]}
*/
export function getBL(rect,out){
out = out || [0,0];
out[0] = rect[0];
out[1] = rect[1] + rect[3];
return out;
}
/**
* Returns the bottom right position.
* @param rect
* @param out
* @returns {*|number[]}
*/
export function getBR(rect,out){
out = out || [0,0];
out[0] = rect[0] + rect[2];
out[1] = rect[1] + rect[3];
return out;
}
/**
* Returns the rectangle points.
* @param rect
* @param out
* @returns {*|Array}
*/
export function getPoints(rect,out){
out = out || [];
out[0] = getTL(rect,out[0]);
out[1] = getTR(rect,out[1]);
out[2] = getBR(rect,out[2]);
out[3] = getBL(rect,out[3]);
return out;
}
/*--------------------------------------------------------------------------------------------------------------------*/
// INCLUDE
/*--------------------------------------------------------------------------------------------------------------------*/
export function includePoint(rect,point){
return includePoint2(rect,point[0],point[1]);
}
export function includePoint2(rect,px,py){
let tlx = rect[0];
let tly = rect[1];
let brx = tlx + rect[2];
let bry = tly + rect[3];
tlx = Math.min(tlx,px);
tly = Math.min(tly,py);
brx = Math.max(brx,px);
bry = Math.max(bry,py);
rect[0] = tlx;
rect[1] = tly;
rect[2] = brx - tlx;
rect[3] = bry - tly;
return rect;
}
export function includedPoint(rect,point){
return includePoint(copy(rect),point);
}
export function includedPoint2(rect,px,py){
return includePoint2(copy(rect),px,py);
}
export function includePoints(rect,points){
for(let i = 0; i < points.length; i+=2){
includePoint2(rect,points[i],points[i+1]);
}
}
export function includeExtends(rect,min,max){
return includeExtends2(rect,min[0],min[1],max[0],max[1]);
}
export function includeExtends2(rect,minx,miny,maxx,maxy){
includePoint2(rect,minx,miny);
includePoint2(rect,maxx,maxy);
return rect;
}
export function includedExtends(rect,min,max){
return includeExtends(copy(rect),min,max);
}
export function includedExtends2(rect,min,max){
return includeExtends2(copy(rect),min,max);
}
/*--------------------------------------------------------------------------------------------------------------------*/
// EDGES
/*--------------------------------------------------------------------------------------------------------------------*/
export function intersection(recta,rectb){
}
/*--------------------------------------------------------------------------------------------------------------------*/
// EQUALITY CHECKS
/*--------------------------------------------------------------------------------------------------------------------*/
/**
* Returns true if a rectangle is identical with another rectangle.
* @param recta
* @param rectb
* @returns {boolean}
*/
export function equals(recta,rectb){
return recta === rectb || (recta[0] === rectb[0] &&
recta[1] === rectb[1] &&
recta[2] === rectb[2] &&
recta[3] === rectb[3]);
}
/**
* Returns true if a rectangles origin and size is zero.
* @param rect
* @returns {boolean}
*/
export function isZero(rect){
return rect[0] === 0 &&
rect[1] === 0 &&
rect[2] === 0 &&
rect[3] === 0;
}
export function union(recta,rectb){
}