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index.html
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<!DOCTYPE html>
<html>
<head>
<!-- Load the Paper.js library -->
<script type="text/javascript" src="paper-full.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript" src="declicam-simple.js"></script>
<!-- Define inlined PaperScript associate it with myCanvas -->
<script type="text/paperscript" canvas="myCanvas">
function switchMode() {
///debug
if (profileType==="radius") {
profileType="angle"
} else {
profileType="radius"
}
console.log("DEBUG:",profileType);
for (var i=0; i< flatPathPointMarker.length; i++) {
flatPathPointMarker[i].remove();
}
flatPath = [];
flatPathPointMarker = [];
initVariables();
camPath.clear();
flatPath.clear();
createResult = createCam();
if (createResult.errNum !==0) {
spnStatus.innerHTML = createResult.errText;
} else {
spnStatus.innerHTML = createResult.errText;
}
}
// Cam/follower mechanism simulator by Jumpjack
// 0.7.0
// Fixed memory leaks
// Fixed rotating follower, but still in debug mode
// Improved SVG import, some further fixing needed (some files are flipper horizontally?!?); added conversion to JSON
// 0.6.2
// Fixed cartesian offset bug while dragging
// Added check for invalid file input (if first point has x != 0)
// 0.6.1
// Added limits on y movement of flatpath markers
// 0.6.0
// Added limits on x movement of flatpath markers
// 0.5.0
// Fixed major bugs of angle-driven profiles, but yet to be finished (angle file to be loaded/saved separately from cam file)
// Fixed some bugs in profile dragging management
// 0.4.0
// Added draft manual editing of flat profile, to be fizxed first marker
// 0.3.0
// Added rotating follower; use profileType at beginning of source to change follower type.
// 0.2.1
// Bugfixes for JSON import
// Bugfixes for profile smoothing
// 0.2.0
// Fixed bug of center hole not at center
// Fixed bug of cam profile drawn from top/border rather than from bottom/center
// Fixed bug of reversed cam rotation
// Added circular zoom feature
// Added full calculation at once of pressure angle curve (realtime and commanded)
// 0.1.5
// Added reference hole at center
// Version 0.1.4
// Added pressure angle path (hence circular cam moved to the right to get some space)
// Fixed bug of bad calculation of follower contact point;
// Added orange colorization for invalid concatc point of follower
// Added cam eccentricity (= follower horizontal offset); to do: fix flat path marker for eccentricity !=0
//
// Version 0.1.3
// Added flat path markers
// Added display of rotation angle value
// Added slider for manual rotation
// Added import/export SVG
// Grouped import/export buttons
// Cleaned up code
// Increased resolution of circular path (indepdendent of flat path resolution)
// Version 0.1.2
// Added exporting to SVG format.
// Please use one of these servies to convert to STL for 3d printing:
// https://rawgit.com/ryancalme/svg-to-stl/master/SVGtoSTL.html (source: https://github.com/rcalme/svg-to-stl )
// http://svg2stl.com/
// Version 0.1.1
// Added pressure angle
// Version 0.1.0 - First public version - 11/11/2021
// To do:
// editable flat path;
// export in SVG format;
// export in STL format;
// tunable rotation speed/direction;
// add speed chart, angle chart, acceleration chart,...
// Known problems:
// Can't handle properly two points at same angle in flat path
///////////////////////////////////////////////////////////////
// Init internal variables and constants:
profileType="radius"; // radius/angle
ANGLE_OFFSET = -90; // 90: Internally used to have the cam profile starting at top rather than at right
CAM_RADIUS = 200;
CAM_CENTER_X = 600;
CAM_CENTER_Y = 230;
GRID_X_OFFSET = 25;
GRID_Y_OFFSET = 25;
PRESSURE_ANGLE_Y_OFFSET = 340;
ANGLE_Y_OFFSET = 580; // Top coordinate of external follower angle profile
BASE_CAM_RADIUS = 10; // debug: to be used somewhere else to check for cam validity
DECLI_TOLERANCE = 5;
decliOffset = 24;
rotationAngle=0;
flatPathPointMarker = [];
flatPathPoint = null;
flatPath = [];
selectedSegmentIndex = 0;
circleHit = false;
prevA = 0;
camPath = null;
lastCircle = null;
prevCircle = null;
nextCircle = null;
selectedCircle = null;
decliValues = [
{"x" : 0, "y" : -23.085910996832},
{"x" : 30, "y" : -18.0427776798567},
{"x" : 60, "y" : -8.29370504807597},
{"x" : 90, "y" : 4.01682425052934},
{"x" : 120, "y" : 14.9008874723579},
{"x" : 150, "y" : 22.0396245665871},
{"x" : 180, "y" : 23.1204841125486},
{"x" : 210, "y" : 18.1710307535317},
{"x" : 240, "y" : 8.1046087060629},
{"x" : 270, "y" : -3.81782448237535},
{"x" : 300, "y" : -15.0561830491583},
{"x" : 330, "y" : -21.9698675820173}
];
CAM_WIDTH = config.pathWidth;
CAM_LINE_COLOR = config.lineColor;
CAM_FILL_COLOR = config.fillColor;
CAM_POINTS_COLOR = config.pointsColor;
CAM_FLATPATH_COLOR = config.flatpathColor;
CAM_FLATPATH_POINTS_COLOR = config.flatpathPointsColor;
CAM_FLATPATH_WIDTH = config.flatpathWidth;
CIRCULAR_PRECISION = 1;
FOLLOWER_LENGTH = config.followerLength;
FOLLOWER_COLOR = config.followerColor;
FOLLOWER_WIDTH = config.followerWidth;
OSCILLATING_FOLLOWER_COLOR = config.followerColor; // debug
OSCILLATING_FOLLOWER_WIDTH = 4; // debug
OSCILLATING_FOLLOWER_LENGTH = 120;
followerOffsetX = config.initialFollowerOffsetX; // Modifiable by slider
followerOffsetY = config.initialFollowerOffsetY; // Modifiable by slider, not implemented in 0.6.0
FOLLOWER_TOP = new Point(CAM_CENTER_X + followerOffsetX, CAM_CENTER_Y + followerOffsetY - CAM_RADIUS);
FOLLOWER_BOTTOM = new Point(CAM_CENTER_X + followerOffsetX, CAM_CENTER_Y + followerOffsetY - CAM_RADIUS - FOLLOWER_LENGTH);
MAX_PRESSURE = config.maxPressure;
NORMAL_COLOR = config.normalColor;
NORMAL_WIDTH = config.normalWidth;
ZERO_ZERO = new Point(GRID_X_OFFSET, GRID_Y_OFFSET);
UPPER_POINT = new Point(GRID_X_OFFSET, GRID_Y_OFFSET + CAM_RADIUS);
BOTTOM = new Point(GRID_X_OFFSET + CAM_CENTER_X, GRID_Y_OFFSET + CAM_CENTER_Y + 200);
FLAT_PROFILE_ORIGIN = new Point(GRID_X_OFFSET, GRID_Y_OFFSET + CAM_RADIUS);
// Oscillating follower prototype:
oscillatingCenterX = CAM_CENTER_X - 120;
oscillatingCenterY = CAM_CENTER_Y - 80;
oscillatingPivot = {x : oscillatingCenterX, y: oscillatingCenterY}
pressureAngleCalculated = false;
angVal = 0;
document.getElementById("btnStart").addEventListener("click", startRotation);
document.getElementById("btnStop").addEventListener("click", stopRotation);
document.getElementById("btnReset").addEventListener("click", resetRotation);
document.getElementById("btnShow").addEventListener("click", toggleCamSelection);
document.getElementById("fileinput").addEventListener("change", loadFile);
//document.getElementById("fileinputAngle").addEventListener("change", loadFileAngle);
document.getElementById("SVGfileinput").addEventListener("change", importSVG);
document.getElementById("btnExportSVG").addEventListener("click", exportSVG);
document.getElementById("btnSave").addEventListener("click", saveCam);
document.getElementById("rngRotation").addEventListener("change", rotateBySlider);
document.getElementById("rngRotation").addEventListener("input", rotateBySlider);
document.getElementById("btnGrid").addEventListener("click", toggleCircularGrid);
document.getElementById("rngFollowerOffset").addEventListener("change", moveFollower);
document.getElementById("rngFollowerOffset").addEventListener("input", moveFollower);
document.getElementById("btnFollowerReset").addEventListener("click", function () {console.log("1");rngFollowerOffset.value = 0; moveFollower() });
document.getElementById("btnRecalcPressure").addEventListener("click", fullRotation);
document.getElementById("btnSmooth").addEventListener("click", function () { flatPath.smooth({ type: 'continuous' }); createCam("smooth");});
document.getElementById("btnDebug").addEventListener("click", switchMode);
document.getElementById("btnReload").onclick=function() { update("RELOAD");};
document.getElementById("rngZoom").oninput=function() { update("ZOOM");};
document.getElementById("rngCartesianOffsetY").oninput=function() { update("ZOOM"); };
//createObjects();
initVariables();
createResult = createCam();
if (createResult.errNum !==0) {
spnStatus.innerHTML = createResult.errText;
} else {
spnStatus.innerHTML = createResult.errText;
}
//fullRotation();
//// END OF SCRIPT ////
/////////////////////////////////////////////////////
function assignCamCONSTANTS() {
CAM_ROTATION_SPEED = camData.rotSpeed;
CAM_STEPS_WIDTH = camData.stepsWidth;
ROTATION_DIRECTION = camData.rotationDir;
camPath.clear();
camPath.strokeColor = CAM_LINE_COLOR;
camPath.selectedColor = CAM_POINTS_COLOR;
camPath.strokeWidth = CAM_WIDTH;
camPath.fillColor = CAM_FILL_COLOR;
flatPath.clear();
flatPath.strokeColor = CAM_FLATPATH_COLOR;
flatPath.selectedColor = CAM_FLATPATH_POINTS_COLOR;
flatPath.strokeWidth = CAM_FLATPATH_WIDTH;
follower.remove();
follower = INITIAL_FOLLOWER.clone();
follower.segments[0].point = FOLLOWER_TOP;
follower.segments[1].point = FOLLOWER_BOTTOM;
follower.segments[0].point.x = FOLLOWER_TOP.x + followerOffsetX;
follower.segments[1].point.x = FOLLOWER_BOTTOM.x + followerOffsetX;
follower.strokeColor = FOLLOWER_COLOR;
follower.strokeWidth = FOLLOWER_WIDTH;
follower.bringToFront();
normalVector.bringToFront();
drawGrid({x:0, y:0}, {x:360, y:CAM_RADIUS}, 10, 10);
}
function createObjects() {
project.activeLayer.removeChildren();
flatPath = new Path();
follower = new Path();
oscillatingFollower = new Path();
normalVector = new Path();
camPath = new Path();
camStaticReference = new Path.Circle();
verticalLine = new Path();
verticalLine.strokeColor = '#0000FF';
verticalLine.moveTo(GRID_X_OFFSET, GRID_Y_OFFSET);
verticalLine.add(GRID_X_OFFSET, GRID_Y_OFFSET + ANGLE_Y_OFFSET + 180);
verticalLine.bringToFront();
pressureAnglePath = new Path({
strokeColor: '#000000',
strokeWidth: 1,
visible:true
});
anglePath = new Path({
strokeColor: '#000000',
strokeWidth: 1,
visible:true
});
flatPathBall = new Path.Circle({
center : FLAT_PROFILE_ORIGIN.clone(),
radius : 5,
strokeColor : '#000000',
fillColor : '#00AA00'
});
// Tracker for oscillating follower angle path:
anglePointInitialY = ANGLE_Y_OFFSET + GRID_Y_OFFSET; // Vertical position in canvas
anglePointInitialPosition = new Point();
anglePointInitialPosition.x = GRID_X_OFFSET;
anglePointInitialPosition.y = anglePointInitialY;
anglePoint = new Path.Circle({
center : anglePointInitialPosition,
radius : 5,
strokeColor : '#000000',
fillColor : '#FFFF00'
});
// Tracker for pressure angle path:
pressureAnglePointInitialY = PRESSURE_ANGLE_Y_OFFSET + GRID_Y_OFFSET;
pressureAnglePointInitialPosition = new Point();
pressureAnglePoint = new Path.Circle({
center : pressureAnglePointInitialPosition,
radius : 5,
strokeColor : '#000000',
fillColor : '#FFFF00'
});
pressureAnglePointInitialPosition.x = GRID_X_OFFSET
pressureAnglePointInitialPosition.y = pressureAnglePointInitialY;
//camStartPoint = new Point();
//CSR = camStartPoint.clone();
origin = new Point(CAM_CENTER_X,CAM_CENTER_Y);
INITIAL_FOLLOWER = new Path([origin,origin]);
INITIAL_OSCILLATING_FOLLOWER = new Path([new Point(oscillatingPivot.x + OSCILLATING_FOLLOWER_LENGTH,oscillatingPivot.y), oscillatingPivot]);
// Invisible object, used internally to determine local radius of cam profile
// Intersector is the vertical line which crosses the flat path, and is used to determine "local cam radius"
intersectorStart = new Point(0 + GRID_X_OFFSET, CAM_RADIUS + GRID_Y_OFFSET);
intersectorEnd = new Point(0 + GRID_X_OFFSET, 0 + GRID_Y_OFFSET);
intersector = new Path([intersectorStart,intersectorEnd]);
// Invisibile object, static: a vertical line crossing the cam, used to determine follower contact point and the pressur angle
intersectorRayStart = new Point(CAM_CENTER_X + followerOffsetX, CAM_CENTER_Y + followerOffsetY + 100);
intersectorRayEnd = new Point(CAM_CENTER_X + followerOffsetX, CAM_CENTER_Y + followerOffsetY - CAM_RADIUS - 100);
intersectorRay = new Path([intersectorRayStart,intersectorRayEnd]);
createAnglePath();
createPressureAnglePath();
drawGrid({x:0, y:0}, {x:360, y:CAM_RADIUS}, 10, 10);
}
function initVariables() {
/*
flatPathPointMarker = [];
flatPathPoint = null;
flatPath = [];
selectedSegmentIndex = 0;
circleHit = false;
prevA = 0;*/
createObjects();
verticalLines = [];
radii = []; // Reference lines
radiiReference = [];
flatPathPointMarker = [];
allowRotation = false;
camCreated = false;
flatPath.name = "flatPath"
camPath.name = "camPath"
pressureAnglePath.name = "pressureAnglePath"
camStaticReference.visible=false;
normalVector.strokeColor = NORMAL_COLOR;
normalVector.strokeWidth = NORMAL_WIDTH;
minPressureAngle = 1000;
maxPressureAngle = -1000;
pointToAdd = null;
pressureAngle= 0;
prevX = 0;
prevY = 0;
contactExists = false;
camType = "JSON"; // Default preloaded cam
totAngle=1;
intersectorRay.strokeColor = '#000000';
camCreated = false;
assignCamCONSTANTS();
//createCam();
fileContents.value = JSON.stringify(camData,null,4); // Display cam data in textarea
}
function drawGrid(topLeft, bottomRight, gridStepX, gridStepY) {
gridToFront = false;
gridCircles = [];
gridCirclesCount = 0;
// Draw vertical lines of grid
for (var x=topLeft.x; x < bottomRight.x; x += gridStepX) {
segment = new Path();
segment.strokeColor = '#DDDDDD';
segment.strokeWidth = 1;
segment.moveTo(new Point(x + GRID_X_OFFSET, topLeft.y + GRID_Y_OFFSET));
segment.add(new Point(x + GRID_X_OFFSET , bottomRight.y + GRID_Y_OFFSET));
}
// Draw horizontal lines of grid and circles on cam
for (var y=topLeft.y; y <= bottomRight.y; y += gridStepY) {
segment = new Path();
segment.strokeColor = '#DDDDDD';
segment.strokeWidth = 1;
segment.moveTo(new Point(0 + GRID_X_OFFSET, y + GRID_Y_OFFSET));
segment.add(new Point(bottomRight.x + GRID_X_OFFSET, y + GRID_Y_OFFSET));
gridCircles.push(new Path.Circle({
center: new Point(CAM_CENTER_X, CAM_CENTER_Y),
radius: y,
strokeColor: '#BBBBBB'
}));
gridCirclesCount++;
}
// Draw top and bottom line of grid
// Top:
segment = new Path();
segment.strokeColor = '#000000';
segment.moveTo(ZERO_ZERO);
segment.add(new Point(bottomRight.x + GRID_X_OFFSET,0 + GRID_Y_OFFSET));
// Bottom
segment = new Path();
segment.strokeColor = '#000000';
segment.moveTo(UPPER_POINT);
segment.add(new Point(bottomRight.x + GRID_X_OFFSET,CAM_RADIUS + GRID_Y_OFFSET));
}
function drawTicks(x_off, y_off, initY, maxVal, label) {
// Draw ticks on left axis:
// Tick +90
dummy = new Path();
dummy.strokeColor = '#000000';
dummy.moveTo(new Point(0 + x_off, initY - 90 ));
dummy.add(new Point(360 + x_off, initY - 90 ));
dummy.add(new Point(360 + x_off, initY + 90 ));
dummy.add(new Point( 0 + x_off, initY + 90 ));
dummy.add(new Point( 0 + x_off, initY - 90 ));
var pressureText = new paper.PointText();
pressureText.content='+90';
pressureText.position.y = initY - 90 ;
// Tick Max
dummy = new Path();
dummy.strokeColor = '#FF0000';
dummy.moveTo(new Point(0 + x_off, initY - maxVal ));
dummy.add(new Point(360 + x_off, initY - maxVal ));
var pressureText = new paper.PointText();
pressureText.content='Max';
pressureText.position.y = initY - maxVal - 0 ;
// Tick -90
dummy = new Path();
dummy.strokeColor = '#000000';
dummy.moveTo(new Point(0 + x_off, initY ));
dummy.add(new Point(360 + x_off, initY ));
var pressureText = new paper.PointText();
pressureText.content='-90';
pressureText.position.y = initY + 90 ;
// Tick Min
dummy = new Path();
dummy.strokeColor = '#FF0000';
dummy.moveTo(new Point(0 + x_off, initY + maxVal ));
dummy.add(new Point(360 + x_off, initY + maxVal ));
var pressureText = new paper.PointText();
pressureText.content='Min';
pressureText.position.y = initY + maxVal - 0 ;//+ y_off ;
// Chart title:
dummy = new Path();
dummy.strokeColor = '#000000';
dummy.moveTo(new Point(0 + x_off, initY + 90 ));
dummy.add(new Point(360 + x_off, initY + 90 ));
var pressureText = new paper.PointText();
pressureText.content=label;
pressureText.position.x = x_off + 180;
pressureText.position.y = y_off -90 ;
}
function drawReferenceRays(vect) {
vect.length = CAM_RADIUS;
// Draw reference "rays" (one per segment):
for (var index = 0 ; index < flatPath.segments.length; index++) {
vect.angle = flatPath.segments[index].point.x + ANGLE_OFFSET + GRID_X_OFFSET;
relativePoint = origin + vect;
if (radii[index]) {
radii[index].remove();
}
tempPath = new Path(origin, relativePoint);
radii.push(tempPath);
radiiReference.push(tempPath);
tempPath.remove();
radii[index].strokeColor = "#FF0000";
vertLine = new Path(new Point(flatPath.segments[index].point.x ,0 + GRID_Y_OFFSET), new Point(flatPath.segments[index].point.x ,CAM_RADIUS + GRID_X_OFFSET));
if (verticalLines[index]) {
verticalLines[index].remove();
}
verticalLines.push(vertLine);
vertLine.remove();
verticalLines[index].strokeColor = "#FF0000";
verticalLines[index].bringToFront();
}
}
function drawAnglePath() {
// angle of oscillating follower w.r.t horizontal plane; positive CCW, negativw CW, 0 at right.
var start = FLAT_PROFILE_ORIGIN.clone();
flatPath.moveTo(start);
for (var i=0; i < camData.segments.length; i++) {
y = oscillatingFollower.segments[0].point.y;
x = oscillatingFollower.segments[0].point.x;
a = parseInt(Math.atan2(x,y)*180/Math.PI.toFixed(0));
flatPathPoint = new Point(camData.segments[i].x + GRID_X_OFFSET, CAM_RADIUS - rngZoom.value * a + GRID_Y_OFFSET - rngCartesianOffsetY.value);
//CAM_RADIUS - rngZoom.value * (camData.segments[i].y) + GRID_Y_OFFSET - rngCartesianOffsetY.value); // debug
flatPath.add(flatPathPoint);
flatPathPointMarker.push(new Path.Circle({
center: flatPathPoint,
radius: 5,
strokeColor: '#000000',
fillColor: '#FF0000'
}));
}
flatPath.bringToFront();
}
function drawFlatPathFromJSONdata() {
if (parseFloat(camData.segments[0].x) !== 0) {
return {
errNum : 1,
errText : "First point in file shall have x = 0!"
}
}
//console.log("drawFlatPathFromJSONdata start", camData, camData.segments[0].x, camData.segments[0].y);
flatPathPointMarker = []; // debug
///// Draw flat path of cam on grid
var temp = new Point(camData.segments[0].x , camData.segments[0].y); // Raw value from file
temp.y += parseInt(rngCartesianOffsetY.value); // Take into account cartesian offset:
temp.y *= rngZoom.value // Take into account polar zoom; warning: does not work with negative input values
temp.x += GRID_X_OFFSET; temp.y = GRID_Y_OFFSET + CAM_RADIUS - temp.y // Move to grid
var start = new Point(temp.x, temp.y);
flatPath.moveTo(start);
flatPathPointMarker.push(new Path.Circle({
center: start,
radius: 5,
strokeColor: '#000000',
fillColor: '#FF0000'
}));
for (var i=1; i < camData.segments.length; i++) {
var temp = new Point(camData.segments[i].x , camData.segments[i].y); // Raw value from file
temp.y += parseInt(rngCartesianOffsetY.value); // Take into account cartesian offset:
temp.y *= rngZoom.value // Take into account polar zoom; warning: does not work with negative input values
temp.x += GRID_X_OFFSET; temp.y = GRID_Y_OFFSET + CAM_RADIUS - temp.y // Move to grid
flatPathPoint = new Point(temp.x, temp.y);
flatPath.add(flatPathPoint);
flatPathPointMarker.push(new Path.Circle({
center: flatPathPoint,
radius: 5,
strokeColor: '#000000',
fillColor: '#FF0000'
}));
}
flatPath.bringToFront();
return {
errNum : 0,
errText : "Flat profile drawn successfully."
}
}
function drawMarkers() {
////
///debug
angVal = prevA
localAngle = totAngle;
if (localAngle < 0) localAngle += 360;
if (localAngle > 360) localAngle = 360 - localAngle;
pressureAngleCalculated = false;
calculatePressureAngle();
pressureAnglePoint.position.x = localAngle + GRID_X_OFFSET + 0;
pressureAnglePoint.position.y = pressureAnglePointInitialY + pressureAngle;
anglePoint.position.x = localAngle + GRID_X_OFFSET + 0;
anglePoint.position.y = prevA + ANGLE_Y_OFFSET + GRID_Y_OFFSET;//anglePointInitialY - angVal;
/*
flatPathBall.position.x = localAngle + GRID_X_OFFSET + 0;
flatPathBall.position.y = camData.segments[totAngle].point.y + CAM_RADIUS + GRID_Y_OFFSET;
flatPathBall.bringToFront();
*/
verticalLine.segments[0].point.x = localAngle + GRID_X_OFFSET;
verticalLine.segments[1].point.x = localAngle + GRID_X_OFFSET;
verticalLine.bringToFront();
}
function importSVG() {
// Load SVG file containing definition of circular path //
var input, file, fr;
if (typeof window.FileReader !== 'function') {
alert("The file API isn't supported on this browser yet.");
return;
}
input = document.getElementById('SVGfileinput');
if (!input) {
alert("Um, couldn't find the fileinput element.");
}
else if (!input.files) {
alert("This browser doesn't seem to support the `files` property of file inputs.");
}
else if (!input.files[0]) {
}
else {
file = input.files[0];
fr = new FileReader();
fr.onload = processReceivedTextSVG;
fr.readAsText(file);
}
}
function loadFile() {
// Load json file containing definition of flat path //
var input, file, fr;
if (typeof window.FileReader !== 'function') {
alert("The file API isn't supported on this browser yet.");
return;
}
input = document.getElementById('fileinput');
if (!input) {
alert("Um, couldn't find the fileinput element.");
}
else if (!input.files) {
alert("This browser doesn't seem to support the `files` property of file inputs.");
}
else if (!input.files[0]) {
console.log("No input file selected");
}
else {
file = input.files[0];
try {
fr = new FileReader();
fr.onload = processReceivedText;
fr.readAsText(file);
} catch (e) {
alert("Error loading file");
console.log("Error loading file, " , e);
}
}
}
function loadFileAngle() {
console.log("Loading ANGLE file...");
// Load json file containing definition of flat path //
var input, file, fr;
if (typeof window.FileReader !== 'function') {
alert("The file API isn't supported on this browser yet.");
return;
}
input = document.getElementById('fileinputAngle');
if (!input) {
alert("Um, couldn't find the fileinput element.");
}
else if (!input.files) {
alert("This browser doesn't seem to support the `files` property of file inputs.");
}
else if (!input.files[0]) {
}
else {
file = input.files[0];
try {
fr = new FileReader();
fr.onload = processReceivedTextAngle;
fr.readAsText(file);
} catch (e) {
alert("Error loading file");
console.log("Error loading file, " , e);
}
}
}
function processReceivedText(e) {
console.log("Processing loaded JSON file...");
var lines = e.target.result;
console.log("Loaded file lines:",e.target.result);
try {
camData = JSON.parse(lines);
fileContents.value = lines;
fileContentsSVG.value = "";
} catch (e){
alert("Invalid JSON file:" + e);
console.log("Invalid JSON file:" + e);
return -1;
}
flatPath.remove(); // dekete from screen
camPath.clear(); // clear segments
camStaticReference.remove(); // remove from screen
for (var i=0; i< flatPathPointMarker.length; i++) {
flatPathPointMarker[i].remove(); // remove from scren
}
camCreated = false;
fileinput.value="";
console.log("Recreating cam from JSON...");
assignCamCONSTANTS();
creationResult = createCam()
if (creationResult.errNum !== 0) {
spnStatus.innerHTML = "Error n. " + creationResult.errNum + " in 'processReceivedText()': "+ creationResult.errText;
return
};
resetRotation();
camPath.bringToFront();
camType = "JSON";
update("ZOOM");
}
function processReceivedTextSVG(e) {
console.log("SVG loaded, importing...",e);
flatPath.remove();
camPath.clear();
camStaticReference.remove();
for (var i=0; i< flatPathPointMarker.length; i++) {
flatPathPointMarker[i].remove();
}
var lines = e.target.result;
filename.innerHTML = SVGfileinput.value;
SVGfileinput.value="";
fileContentsSVG.value=lines;
fileContents.value = "";
rawPathStart = lines.indexOf("path");
rawPathStart = lines.indexOf("d=", rawPathStart+1) + 3;
rawPathEnd = lines.indexOf('"', rawPathStart+1) - 1;
rawPathLen = rawPathEnd - rawPathStart + 1;
rawPath = lines.substr(rawPathStart, rawPathLen);
try {
camPath = new Path(rawPath);
} catch (e){
alert("Invalid SVG file:" + e);
console.log("Invalid SVG file:" + e);
return -1;
}
camType = "SVG";
flatArray = SVGtoJSON(rawPath,2);
camData = {
"segments": flatArray,
"rotSpeed": 1,
"stepsWidth": -1,
"rotationDir": 1,
"dataType": "rotating"
};
//camData.segments = interpolateData(camData.segments); /// debug !!
fileContents.value = JSON.stringify(camData,null,4); // Display cam data in textarea
drawFlatPathFromJSONdata();
update("MANUAL");
console.log("Cam SVG loading complete.");
}
function SVGtoJSON(rawPath, resolution) {
var camPath = new Path(rawPath);
camPath = resizePathToBounds(camPath,100);
camPath.add(camPath.segments[0].point);
camPath.position = origin;
camPath.strokeColor = CAM_LINE_COLOR;
camPath.selectedColor = CAM_POINTS_COLOR;
camPath.strokeWidth = CAM_WIDTH;
camPath.fillColor = CAM_FILL_COLOR;
camCreated = true;
camStaticReference = camPath.clone();
camStaticReference.visible=false;
camPath.visible = true;
var flatCoords = [];
// Definisci il centro (origine) di rotazione
//var origin = new Point(CAM_CENTER_X, CAM_CENTER_Y);
// Passo di rotazione in gradi
var step = resolution;
// Ciclo per ogni angolo da 0 a 360 gradi
for (var angle = 360 + 270; angle >= 270; angle -= step) {
// Calcola la fine del segmento che parte dall'origine e si estende in direzione dell'angolo attuale
var endX = origin.x + 100 * Math.cos(angle * Math.PI / 180); // Coordinata finale relativa all'origine
var endY = origin.y + 100 * Math.sin(angle * Math.PI / 180);
var endPoint = new Point(endX, endY);
// Crea il segmento di linea che parte dall'origine
var ray = new Path.Line(origin, endPoint);
// Imposta lo stile della linea per renderla visibile
ray.bringToFront();
ray.visible = true; // Correzione della proprietà visibilità
ray.strokeColor = 'black'; // Imposta il colore della linea
ray.strokeWidth = 1; // Imposta lo spessore della linea
// Trova le intersezioni tra il segmento e il perimetro del poligono
var intersections = camPath.getIntersections(ray);
if (intersections.length > 0) {
// Trova l'intersezione più vicina all'origine
var closestIntersection = intersections[0].point;
var closestDistance = closestIntersection.getDistance(origin);
for (var j = 1; j < intersections.length; j++) {
var distance = intersections[j].point.length;
if (distance < closestDistance) {
closestIntersection = intersections[j].point;
closestDistance = distance;
}
}
flatCoords.push({x: 360+270-angle, y:closestDistance});
}
// Rimuovi il segmento temporaneo
ray.remove();
}
return flatCoords;
}
function resizePathToBounds(path,size) {
// Ottieni il bounding box del path
var bounds = path.getBounds();
// Calcola le dimensioni e la posizione attuale
var width = bounds.width;
var height = bounds.height;
// Definisci i limiti della bounding box desiderata
var desiredTopLeft = new Point(0, 0);
var desiredBottomRight = new Point(size, size);
// Calcola le scale per il ridimensionamento
var scaleX = desiredBottomRight.x / width;
var scaleY = desiredBottomRight.y / height;
// Usa il fattore di scala più piccolo per mantenere le proporzioni
var scale = Math.min(scaleX, scaleY);
// Ridimensiona il path
path.scale(scale);
// Ricalcola il bounding box dopo il ridimensionamento
var newBounds = path.getBounds();
// Calcola il centro del bounding box ridimensionato
var newCenterX = newBounds.x + newBounds.width / 2;
var newCenterY = newBounds.y + newBounds.height / 2;
// Calcola l'offset necessario per spostare il centro nell'origine
var offsetX = -newCenterX;
var offsetY = -newCenterY;
// Muovi il path al nuovo centro
path.translate(new Point(offsetX, offsetY));
return path;
}
function interpolateData(segments) {
newSegments = [];
for (i = 0; i < segments.length - 1; i++) {
start = segments[i];
end = segments[i + 1];
newSegments.push(start);
// Calcola la differenza tra i punti adiacenti
diffY = end.y - start.y;
console.log(i,diffY);
steps = Math.abs(end.x - start.x);
// Se la differenza è significativa, interpoliamo
if (steps > 1 && Math.abs(diffY) > 2) { // soglia di 5 per considerare la discontinuità
for ( j = 1; j < steps; j++) {
interpolatedY = start.y + (diffY / steps) * j;
newSegments.push({ x: start.x + j, y: interpolatedY });
}
}
}
newSegments.push(segments[segments.length - 1]); // Aggiungi l'ultimo segmento
return newSegments;
}
function bubbleSort(arr) {
n = arr.length;
swapped= false;
// Ciclo per passare attraverso l'array
do {
swapped = false;
for (i = 0; i < n - 1; i++) {
// Confronto degli elementi adiacenti
if (arr[i].x > arr[i + 1].x) {
// Scambio degli elementi
temp = arr[i];
arr[i] = arr[i + 1];
arr[i + 1] = temp;
swapped = true; // Segnala che uno scambio è avvenuto
}
}
} while (swapped); // Ripeti finché ci sono scambi
return arr;
}
function processReceivedTextAngle(e) { // to be implemented!
console.log("Processing loaded JSON file... (angle type)");
var lines = e.target.result;
try {
angleData = JSON.parse(lines);
fileContentsAngle.value = lines;
fileContentsSVG.value = "";
} catch (e){
alert("Invalid JSON file:" + e);
console.log("Invalid JSON file:" + e);
return -1;
}
flatPath.remove();
camPath.clear();
camStaticReference.remove();
for (var i=0; i< flatPathPointMarker.length; i++) {
flatPathPointMarker[i].remove();
}
camCreated = false;
fileinput.value="";
console.log("Recreating cam from JSON...");
assignCamCONSTANTS();
/////////////////
createResult = createCam();
if (createResult.errNum !==0) {
spnStatus.innerHTML = createResult.errText;
} else {
spnStatus.innerHTML = createResult.errText;
}
/////////////////
resetRotation();
camPath.bringToFront();
//camStartPoint.bringToFront();
camType = "JSON";
update("ZOOM");
}
function saveCam () {
allowRotation = false;
resetRotation();
var filename = "cam.json";