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scissorsTool.js
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// A tool to cut a shape
function ScissorsTool(){
// initialise variables
// set object icon and name
this.icon = "assets/scissors.png";
this.name = "Scissors";
// initialise mouse position before selection to off-canvas
var startMouseX = -1;
var startMouseY = -1;
// initialise drawing state as inactive
var drawing = false;
// closure
var self = this;
// set range for hue, saturation, lightness and alpha
this.hRange = 1;
this.sRange = 10;
this.lRange = 10;
this.aRange = 1;
// set mode to "cut"
this.mode = "cut";
// initialise this.points as an empty array
this.points = [];
// initialise this.pieces as an empty array
this.pieces = [];
// initialise this.scissors as an empty array
this.scissors = [];
this.whiteFix = function(colour){
// fix white colour
if(colour == [0,0,0,0]){
colour = [255,255,255,255];
}
return colour;
};
this.getColour = function(x,y){
// get colour from pixels[]
var d = pixelDensity();
var off = 4 * ((y * d) * width * d + (x * d));
var components = [
pixels[off],
pixels[off + 1],
pixels[off + 2],
pixels[off + 3]
];
// if colour is white, fix white colour
// convert colour to hsla and return hsla array
return this.rgbHSL(this.whiteFix(components));
};
this.compareColour = function(c1,c2){
// compare colours in terms of range
if(abs(c1[0] - c2[0]) <= this.hRange &&
abs(c1[1] - c2[1]) <= this.sRange &&
abs(c1[2] - c2[2]) <= this.lRange &&
abs(c1[3] - c2[3]) <= this.aRange) {
return true;
}
return false;
};
this.checkColour = function(x,y,colour){
// get pixel colour to compare with selected colour
return this.compareColour(this.getColour(x,y),colour);
};
this.selectEdge = function(array,startColour,colour,x,y,ind){
// index the outline of a shape
// initialise variables
// set start point of indexing to mouse position
var startX = x;
var startY = y;
// set indexing variables to mouse position
var newX = x;
var newY = y;
// initialise termination variables
var endX;
var endY;
// initialise pixel selection variables
var nextX;
var nextY;
var prevX;
var prevY;
// initialise start index
var start = 1;
// initialise inner
var inner;
// if no start index is provided, i.e. call from this.selectColour()
if(!ind){
ind = 0;
}
// if start index is provided, i.e. call from indexInner()
else{
start = -1;
}
// set i to 0
var i = 0;
// index outline until start point equals end point
while(startX != endX || startY != endY){
// set pixel selection variables
prevX = newX - 1;
prevY = newY - 1;
nextX = newX + 1;
nextY = newY + 1;
// if i is at start point + 1
if(i == start + 1){
// get the current pixel's colour
let c2 = this.getColour(newX,newY);
// add new point into the array
array.splice(ind,0,[newX,newY,c2]);
// increment splicing index
ind++;
}
// if the colour of the pixel to the right and the top pixel is different, the colour of the pixel to the left is the same and x is greater than 0
if(!this.checkColour(nextX,newY,startColour) &&
this.checkColour(prevX,newY,startColour) &&
!this.checkColour(newX,prevY,startColour) &&
newX > 0){
// get current colour
let c1 = this.getColour(newX,newY);
// while colour of the pixel to the left is the same,
// colour of the top pixel is different and x is greater than 0
while(this.checkColour(prevX,newY,startColour) &&
!this.checkColour(newX,prevY,startColour) &&
newX > 0){
// keep on moving left
newX--;
prevX--;
if(i > start && (newX != startX || newY != startY)){
// get the current colour
let c2 = this.getColour(newX,newY);
// if the colour is not exactly the same as the initial colour
if(!this.compareExactColour(c1,c2)) {
// add a new point to the array
array.splice(ind,0,[newX,newY,c2]);
// increment splicing index
ind++;
}
}
}
// if indexing is after the start point
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if the colour of the pixel to the left is the same and that of the top pixel is different and x is greater than 0
else if(this.checkColour(prevX,newY,startColour) &&
!this.checkColour(newX,prevY,startColour) &&
newX > 0){
let c1 = this.getColour(newX,newY);
// while the colour of the pixel to the left is the same and the colour of the top pixel is different and x is greater than the width of the canvas
while(this.checkColour(prevX,newY,startColour) &&
!this.checkColour(newX,prevY,startColour) &&
newX > 0){
// keep on moving left
newX--;
prevX--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
if(!this.compareExactColour(c1,c2)) {
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if colour of the pixel the left and the top pixel is the same, the colour of the left top pixel diagonally is different and x is greater than 0
else if(this.checkColour(prevX,newY,startColour) &&
this.checkColour(newX,prevY,startColour) &&
!this.checkColour(prevX,prevY,startColour) &&
newX > 0){
// move left
newX--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if colour of the pixel to the left and the top left pixel diagonally are the same, the colour of the top pixel is different and x is greater than 0
else if(this.checkColour(prevX,newY,startColour) &&
!this.checkColour(newX,prevY,startColour) &&
this.checkColour(prevX,prevY,startColour) &&
newX > 0) {
// move left
newX--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if all the colour of all surrounding pixels is the same and x is less than the width of the canvas
else if(this.checkColour(nextX,newY,startColour) &&
this.checkColour(prevX,newY,startColour) &&
this.checkColour(newX,nextY,startColour) &&
this.checkColour(newX,prevY,startColour) &&
this.checkColour(nextX,nextY,startColour) &&
this.checkColour(prevX,nextY,startColour) &&
this.checkColour(nextX,prevY,startColour) &&
this.checkColour(prevX,prevY,startColour) &&
newX < width - 1){
let c1 = this.getColour(newX,newY);
// while the colour of the pixel to the right is the same and x is less than the width of the canvas
while(this.checkColour(nextX,newY,startColour) &&
newX < width - 1){
// keep on moving right
newX++;
nextX++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
if(!this.compareExactColour(c1,c2)) {
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if the colour of the top pixel is the same and the current pixel is the rightmost pixel of the canvas and y is greater than 0
else if(this.checkColour(newX,prevY,startColour) &&
newX == width - 1 && newY > 0){
// while the colour of top pixel is the same and y is greater than 0
while(this.checkColour(newX,prevY,startColour) &&
newY > 0){
// keep on moving top
newY--;
prevY--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
// if the colour of top pixel is the same and the current pixel is the rightmost pixel at the top of the canvas
else if(this.checkColour(prevX,newY,startColour) &&
newX == width - 1 && abs(newY) == 0){
let c1 = this.getColour(newX,newY);
// while the colour of the previous pixel is the same and x is greater than 0
while(this.checkColour(prevX,newY,startColour) &&
newX > 0){
// keep on moving left
newX--;
prevX--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
if(!this.compareExactColour(c1,c2)) {
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if the colour of the bottom pixel is the same and the current pixel is the leftmost pixel at the top of the canvas
else if(this.checkColour(newX,nextY,startColour) &&
abs(newX) == 0 && abs(newY) == 0){
// while the colour of the bottom pixel is the same and y is less than the height of the canvas
while(this.checkColour(newX,nextY,startColour) &&
newY < height){
// keep on moving down
newY++;
nextY++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
// if the colour of the pixel to the right is the same and the current pixel is the leftmost pixel at the bottom of the canvas
else if(this.checkColour(nextX,newY,startColour) &&
abs(newX) == 0 && newY == height){
let c1 = this.getColour(newX,newY);
// while the colour of the pixel to the right is the same and x is less than the width of the canvas
while(this.checkColour(nextX,newY,startColour) &&
newX < width - 1){
// keep on moving right
newX++;
nextX++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
if(!this.compareExactColour(c1,c2)) {
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
// if the colour of the pixel to the right is the same, the colour of the pixel to the left and bottom pixels is different and x is less than the width of the canvas
} else if(this.checkColour(nextX,newY,startColour) &&
!this.checkColour(prevX,newY,startColour) &&
!this.checkColour(newX,nextY,startColour) &&
newX < width - 1){
let c1 = this.getColour(newX,newY);
// while the colour of the pixel to the right is the same, the colour of the bottom pixel is the different and x is less than the width of the canvas
while(this.checkColour(nextX,newY,startColour) &&
!this.checkColour(newX,nextY,startColour) &&
newX < width - 1){
// keep on moving right
newX++;
nextX++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
if(!this.compareExactColour(c1,c2)) {
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if the colour of the pixel to the right and the bottom right pixel diagonally is the same and the colour of bottom pixel is different and x is less than the width of the canvas
else if(this.checkColour(nextX,newY,startColour) &&
!this.checkColour(newX,nextY,startColour) &&
this.checkColour(nextX,nextY,startColour) &&
newX < width - 1){
// move right
newX++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if the colour of the pixel to the right is the same, the colour of the bottom pixel is different and x is less than the width of the canvas
else if(this.checkColour(nextX,newY,startColour) &&
!this.checkColour(newX,nextY,startColour) &&
newX < width - 1) {
let c1 = this.getColour(newX,newY);
// while the xolour of the pixel to the right is the same, the colour the the bottom pixel is different and x is less the width of the canvas
while(this.checkColour(nextX,newY,startColour) &&
!this.checkColour(newX,nextY,startColour) &&
newX < width - 1){
// keep on moving right
newX++;
nextX++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
if(!this.compareExactColour(c1,c2)) {
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if the colour of the pixel to the right and the bottom pixel is the same, the colour of the bottom right pixel diagonally is different and x is less than width
else if(this.checkColour(nextX,newY,startColour) &&
this.checkColour(newX,nextY,startColour) &&
!this.checkColour(nextX,nextY,startColour) &&
newX < width - 1){
// move right
newX++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if the colour of the pixel to the right is different, the colour of the top pixel is the same and y is greater than 0
else if(!this.checkColour(nextX,newY,startColour) &&
this.checkColour(newX,prevY,startColour) &&
newY > 0){
// while the colour of the top pixel is the same, the colour of the pixel the right is different and x is greater than 0
while(this.checkColour(newX,prevY,startColour) &&
!this.checkColour(nextX,newY,startColour) &&
newY > 0) {
// keep on moving top
newY--;
prevY--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
// if the colour of the pixel to the right and the top pixel is the same, the colour of the right top pixel diagonally is different and y is greater than 0
else if(this.checkColour(nextX,newY,startColour) &&
this.checkColour(newX,prevY,startColour) &&
!this.checkColour(nextX,prevY,startColour) &&
newY > 0){
// move top
newY--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if the colour of the pixel to the right and the bottom pixel is different, the colour of the top pixel is the same and y is greater than 0
else if(!this.checkColour(nextX,newY,startColour) &&
!this.checkColour(newX,nextY,startColour) &&
this.checkColour(newX,prevY,startColour) &&
newY > 0){
// while the colour of the top pixel is the same, the colour of the pixel to the right is different and y is greater than 0
while(this.checkColour(newX,prevY,startColour) &&
!this.checkColour(nextX,newY,startColour) &&
newY > 0){
// keep on moving top
newY--;
prevY--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
// if the colour of the pixel to the right is different, the colour of the top pixel is the same and y is greater than 0
else if(!this.checkColour(nextX,newY,startColour) &&
this.checkColour(newX,prevY,startColour) &&
newY > 0){
// while the colour of the top pixel is the same, the colour of the pixel to the right is different and y is greater than 0
while(this.checkColour(newX,prevY,startColour) &&
!this.checkColour(nextX,newY,startColour) &&
newY > 0){
// keep on moving top
newY--;
prevY--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
// if the colour of the pixel to the right is different, the colour of the top pixel and the top right pixel diagonally is the same and y is greater than 0
else if(!this.checkColour(nextX,newY,startColour) &&
this.checkColour(newX,prevY,startColour) &&
this.checkColour(nextX,prevY,startColour) &&
newY > 0){
// move top
newY--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if the colour of the pixel to the left and the top pixel is different, the colour of the bottom pixel is the same and y is less than the height
else if(!this.checkColour(prevX,newY,startColour) &&
this.checkColour(newX,nextY,startColour) &&
!this.checkColour(newX,prevY,startColour) &&
newY < height){
// while the colour of the bottom pixel is the same, the colour of the pixel to the left is different and y is less than height
while(this.checkColour(newX,nextY,startColour) &&
!this.checkColour(prevX,newY,startColour) &&
newY < height) {
// keep on moving down
newY++;
nextY++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
// if the colour of the pixel to the left is different, the colour of the pixel to the top and the left bottom pixel diagonally is the same and y is less than height
else if(!this.checkColour(prevX,newY,startColour) &&
this.checkColour(newX,nextY,startColour) &&
this.checkColour(prevX,nextY,startColour) &&
newY < height){
// move bottom
newY++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if the colour of the pixel the left is different, the colour of the bottom pixel is the same and y is less than height
else if(!this.checkColour(prevX,newY,startColour) &&
this.checkColour(newX,nextY,startColour) &&
newY < height){
// while the colour of the bottom pixel is the same, the colour of the pixel to the left is different and y is less than height
while(this.checkColour(newX,nextY,startColour) &&
!this.checkColour(prevX,newY,startColour) &&
newY < height){
// keep on moving down
newY++;
nextY++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
// if the colour of the pixel to the left and the bottom pixel is the same, the colour of the bottom left pixel is different and y is less than height
else if(this.checkColour(prevX,newY,startColour) &&
this.checkColour(newX,nextY,startColour) &&
!this.checkColour(prevX,nextY,startColour) &&
newY < height){
// move down
newY++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
// if the colour of the pixel to the right is different, the colour of the right top pixel diagonally and the top pixel is the same, x is less than width and y is greater than 0
else if(!this.checkColour(nextX,newY,startColour) &&
this.checkColour(nextX,prevY,startColour) &&
this.prevYcolor(newX,prevY,startColour) &&
newX < width - 1 && newY > 0){
// while the colour of the pixel to the right is different, the colour of the right top pixel diagonally and the top pixel is different and x is less than width and y is greater than 0
while(!this.checkColour(nextX,newY,startColour) &&
this.checkColour(nextX,prevY,startColour) &&
this.prevYcolor(newX,prevY,startColour) &&
newX < width - 1 && newY > 0){
// keep on moving top right diagonally
newX++;
nextX++;
newY--;
nextY--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
// if the colour of the pixel to the left is different, the colour of the left bottom pixel diagonally and the bottom pixel is the same, x is greater than 0 and y is less tha height
else if(!this.checkColour(prevX,newY,startColour) &&
this.checkColour(prevX,nextY,startColour) &&
this.checkColour(newX,nextY,startColour) &&
newX > 0 && newY < height){
//while the colour of the pixel to the left is different, the colour of the left bottom pixel diagonally and the bottom pixel is the same, x is greater than 0 and y is less tha height
while(!this.checkColour(prevX,newY,startColour) &&
this.checkColour(prevX,nextY,startColour) &&
this.checkColour(newX,nextY,startColour) &&
newX > 0 && newY < height){
// keep on moving left bottom diagonally
newX--;
nextX--;
newY++;
nextY++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
// if the colour of the bottom pixel is different, the colour of the right bottom pixel diagonally and the right pixel is the same, x is less than width and y is less tha height
else if(!this.checkColour(newX,nextY,startColour) &&
this.checkColour(nextX,nextY,startColour) &&
this.checkColour(nextX,newY,startColour) &&
newX < width - 1 && newY < height){
// while the colour of the bottom pixel is different, the colour of the right bottom pixel diagonally and the right pixel is the same, x is less than width and y is less tha height
while(!this.checkColour(newX,nextY,startColour) &&
this.checkColour(nextX,nextY,startColour) &&
this.checkColour(nextX,newY,startColour) &&
newX < width - 1 && newY < height){
// keep on moving right bottom diagonally
newX++;
nextX++;
newY++;
nextY++;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
// if the colour of the top pixel is different, the colour of the left top pixel diagonally and the left pixel is the same, x is greater than 0 and y is greater than 0
else if(!this.checkColour(newX,prevY,startColour) &&
this.checkColour(prevX,prevY,startColour) &&
this.checkColour(prevX,newY,startColour) &&
newX > 0 && newY > 0){
// while the colour of the top pixel is different, the colour of the left top pixel diagonally and the left pixel is the same, x is greater than 0 and y is greater than 0
while(!this.checkColour(newX,prevY,startColour) &&
this.checkColour(prevX,prevY,startColour) &&
this.checkColour(prevX,newY,startColour) &&
newX > 0 && newY > 0){
// keep on moving top left diagonally
newX--;
nextX--;
newY--;
nextY--;
if(i > start && (newX != startX || newY != startY)){
let c2 = this.getColour(newX,newY);
array.splice(ind,0,[newX,newY,c2]);
ind++;
}
}
}
else {
break;
}
// if the current point is the start point
if(i == start){
// set startX and startY to the current point
startX = newX;
startY = newY;
// check if call originates from this.innerIndex()
if(this.checkColour(newX,prevY,startColour) && startX < width){
inner = true;
}
}
// if the current point is any point after the start point
else if(i > start){
// set end point to current point
endX = newX;
endY = newY;
}
// increment i
i++;
}
// if call originates from this.innerIndex(), i.e. the outline is of an inner shape
if(inner) {
// find a point to continue indexing the outer shape from
// find max x and y
var maxX = startX;
for(let i = 0; i < array.length; i++) {
if(array[i][0] > maxX) {
maxX = array[i][0];
maxY = array[i][1];
}
}
// find x of the pixel to the right of max x
maxX += 1;
// if the colour is the same as startColour, call this.selectColour() with x and y of maxX and maxY to continue the index
if(this.checkColour(maxX,maxY,startColour)) {
this.selectColour(array,startColour,colour,maxX,maxY);
}
}
return array;
};
this.swap = function(array,i1,i2){
// swap points
var copy = array[i1];
array[i1] = array[i2];
array[i2] = copy;
return array;
};
this.sortY = function(array,ind1,ind2){
// sort y by insertion sort
if(!ind1){
ind1 = 0;
}
if(!ind2){
ind2 = array.length - 1;
}
for(let i = ind1+1; i <= ind2; i++){
if(array[i-1][1] > array[i][1]) {
for(let j = i; j > ind1; j--){
if(array[j-1][1] > array[j][1]){
this.swap(array,j,j-1);
}
else if(array[j-1][1] == array[j][1]){
break;
}
}
}
}
return array;
};
this.sortX = function(array,ind1,ind2){
// sort x by insertion sort
if(!ind1){
ind1 = 0;
}
if(!ind2){
ind2 = array.length - 1;
}
var currY;
var iY;
for(var i = ind1+1; i <= ind2; i++){
if(array[i-1][1] != currY){
currY = array[i-1][1];
iY = i-1;
}
if(array[i-1][1] == array[i][1] &&
array[i-1][0] > array[i][0]){
for(let j = i; j > iY; j--){
if(array[j-1][0] > array[j][0]){
this.swap(array,j,j-1);
}
}
}
}
return array;
};
this.indexInner = function(array,startColour,colour){
// index inner points
for(let i = 0; i < array.length - 1; i++) {
let p1 = array[i];
let p2 = array[i+1]; if(!this.checkColour(p1[0]+1,p1[1],startColour)){
continue;
}
if(p2[0] - p1[0] > 1 && p1[1] == p2[1]){
for(let j = p1[0]+1; j < p2[0]; j++){
if(this.checkColour(j,p1[1]+1,startColour) &&
this.checkColour(j+1,p1[1],startColour) &&
!this.checkColour(j+1,p1[1]+1,startColour)){
let initLen = array.length;
let i1 = i+1;
this.selectEdge(array,startColour,colour,j,p1[1],i1);
let newLen = array.length;
let newPoints = newLen - initLen;
let i2 = i1 + newPoints;
let endY = array[i1][1];
for(let l = i1; l < i2; l++){
if(array[l][1] > endY){
endY = array[l][1];
}
}
let k = i1;
while(array[k][1] <= endY) {
k++;
}
this.sortX(this.sortY(array,i1,k),i1,k);
break;
}
else{
let c1 = array[i][2];
let c2 = this.getColour(j,p1[1]);
if(!this.compareExactColour(c1,c2)) {
array.splice(++i,0,[j,p1[1],c2]);
}
}
}
}
}
return array;
};
this.selectColour = function(array,startColour,colour,x,y,ind){
// select shape
var edge = this.selectEdge(array,startColour,colour,x,y,ind);
var sorted = this.sortX(this.sortY(edge));
var inner = this.indexInner(sorted,startColour,colour);
return array;
};
this.compareExactColour = function(arr1,arr2) {
// compare exact colour values
return (arr1[0] == arr2[0] &&
arr1[1] == arr2[1] &&
arr1[2] == arr2[2] &&
arr1[3] == arr2[3]) ? true : false;
};
this.calcColour = function(pointColour,colour,startColour) {
// calculate equivalent colour
var h = colour[0];
var s = round(max(min(pointColour[1]/startColour[1] * colour[1],100),0));
var l = round(max(min(pointColour[2]/startColour[2] * colour[2],100),0));
var a = parseFloat(max(min(pointColour[3]/startColour[3] * colour[3],1),0)).toFixed(1);
var rgba = this.hslRGB([h,s,l,a]);
return rgba;
};
this.replaceColour = function(array,colour,startColour,x1,y1,x2,y2) {
// replace colour
var adjX, adjY;
for(let i = 1; i < array.length; i++) {
var c1 = array[i-1];
var c2 = array[i];
var nextXColour = this.getColour(c1[0]+1,c1[1]);
var c1Colour = c1[2];
var newColour = this.calcColour(c1Colour,colour,startColour);
push();
stroke(newColour);
if(this.compareColour(nextXColour,startColour) &&
c1[1] == c2[1]) {
if(this.mode == "move"){
adjX = x2 - x1;
adjY = y2 - y1;
}
else {
adjX = 0;
adjY = 0;
}
push();
stroke(255);
line(c1[0], c1[1], c2[0] - 1, c2[1]);
pop();
line(c1[0] + adjX,
c1[1] + adjY,
c2[0] - 1 + adjX,
c2[1] + adjY);
}
else {
push();
stroke(255);
point(c1[0],c1[1]);
pop();
point(c1[0] + adjX,c1[1] + adjY);
}
pop();
if(i == array.length - 1){
push();
let c2Colour = c2[2];
newColour = this.calcColour(c2Colour,colour,startColour);
push();
stroke(255);
point(c2[0],c2[1]);
pop();
stroke(newColour);
point(c2[0] + adjX,c2[1] + adjY);
pop();
}
}
};
this.colourPHSL = function(colour){
// convert colour name to HSLA
if(colour == "black"){
return [0,0,0,1];
}
else if(colour == "silver"){
return [0,0,75,1];
}
else if(colour == "gray"){
return [0,0,50,1];
}
else if(colour == "white"){
return [0,0,100,1];
}
else if(colour == "maroon"){
return [0,100,25,1];
}
else if(colour == "red"){
return [0,100,50,1];
}
else if(colour == "purple"){
return [300,100,25,1];
}
else if(colour == "orange"){
return [39,100,50,1];
}
else if(colour == "pink"){
return [350,100,88,1];
}
else if(colour == "fuchsia"){
return [300,100,50,1];
}
else if(colour == "green"){
return [120,100,25,1];
}
else if(colour == "lime"){
return [120,100,50,1];
}
else if(colour == "olive"){
return [60,100,25,1];
}
else if(colour == "yellow"){
return [60,100,50,1];
}
else if(colour == "navy"){
return [240,100,25,1];
}
else if(colour == "blue"){
return [240,100,50,1];
}
else if(colour == "teal"){
return [180,100,25,1];
}
else if(colour == "aqua"){
return [180,100,50,1];
}
};
this.rgbHSL = function(rgba){
// convert colour from RGBA to HSLA
var r = rgba[0]/255;
var g = rgba[1]/255;
var b = rgba[2]/255;
var a = rgba[3]/255;
var cMax = max(r,g,b);
var cMin = min(r,g,b);
var l = ((cMax + cMin)/2) * 100;
var delta = cMax - cMin;
var s;
if(cMin == cMax){
s = 0;
}
else if(l < 50){
s = (cMax - cMin)/(cMax + cMin) * 100;
}
else{
s = (cMax - cMin)/(2.0 - cMax - cMin) * 100;
}
var h;
if(cMax == 0){
h = 0;
}
else if(cMax == r){
h = (g - b)/(cMax - cMin);
}
else if(cMax == g){
h = 2.0 + (b - r)/(cMax - cMin);
}
else{
h = 4.0 + (r - g)/(cMax - cMin);
}
h *= 60;
if(h < 0) {
h += 360;
}
var hsla = [round(h),round(s),round(l),parseFloat(a.toFixed(1))];
return hsla;
};
this.hslRGB = function(hsla) {
// convert colour from HSLA to RGBA
var h = hsla[0]/360;
var s = hsla[1]/100;
var l = hsla[2]/100;
var a = hsla[3];
var r, g, b;
if (s == 0) {
r = g = b = l; // achromatic
}
else{
var t1 = l < 0.5 ? l * (1 + s) : l + s - l * s;
var t2 = 2 * l - t1;
r = h + 0.333;
g = h;
b = h - 0.333;
function findVal(c){
if (c < 0) c += 1;
if (c > 1) c -= 1;
if (c < 0.167) return t2 + (t1 - t2) * 6 * c;
if (c < 0.5) return t1;
if (c < 0.667) return t2 + (t1 - t2) * (0.667 - c) * 6;
return t2;
}
r = findVal(r) * 255;
g = findVal(g) * 255;
b = findVal(b) * 255;
a *= 255;
}
return [round(r),round(g),round(b),round(a)];
};
this.cutArray = function(array,scissors,x1,y1,x2,y2) {
// cut shape
var minY = min(y1,y2);
var array1,array2;
var p1,p2;
if(minY == y1) {
p1 = [x2,y2];
p2 = [x1,y1];
}
else{
p1 = [x1,y1];
p2 = [x2,y2];
}
var slope = (p2[0] - p1[0])/(p2[1] - p1[1]);
var sp2 = [round(p2[0] - slope*(p2[1] - array[0][1])),
array[0][1]];
var sp1 = [round(p2[0] - slope*(p2[1] - array[array.length-1][1])),
array[array.length-1][1]];
var rows = sp2[1] - sp1[1];
push();
stroke(0,255,255);
for(let i = 0; i <= abs(rows); i++) {
scissors.push([round(sp2[0] - slope * (sp2[1] - sp2[1]-i)),
sp2[1]+i,
this.getColour(round(sp2[0] - slope * (sp2[1] - sp2[1]-i)),
sp2[1]+i)]);
point(round(sp2[0] - slope*(sp2[1] - sp2[1]-i)),sp2[1]+i);
}
pop();
array1 = array.slice();
array2 = [];
var prevYi = 0;
for(let j = 0; j < scissors.length; j++){
for(let i = 1; i < array.length; i++){
if(scissors[j][1] == array[i-1][1] &&