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<html>
<script src='matrix_vector_lib.js' ></script>
<script>
//
// Editor modes
//
// Motion mode -- change the camera center using the original movement system
// --------Camera mode -- adjust the camera, scale zoom and position zoom, make it stationary or rotating about the center
// Edit mode -- create points at camera center, move points, create lines by clicking on successive points, create closed polygons etc.
// Editing Strategy
// During draw mode only the very edges of the screen rotate the view, and at reduced speed
// pressing enter or clicking on the center point creates a new point.
// points are moved with the arrow keys, the direction is absolute, that means it does not depend on the camera angle.
// the arrow keys move the selected point.
// clicking on a second point when one point is already selected creates a line.
// TODO control with zoom scales the selected object
// control with rotate rotates the selected objects
// TODO clicking and dragging on a line allows you to place a point somewhere on that line. Perhaps with the ctrl key it would break up the existing line into line segments.
// TODO when lines are deleted, readd the solo points to the solo_points list
//
// TODO z for undo shift + z for redo.
//
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<html>
<script src='matrix_vector_lib.js' ></script>
<script>
// TODO control with zoom rotate or pan means that action is only applied to the camera not the selected points.
// TODO clicking and dragging on a line allows you to place a point somewhere on that line. Perhaps with the modifier key it would break up the existing line into line segments.
// TODO when lines are deleted, readd the solo points to the solo_points list
//
// TODO z for undo shift + z for redo.
//
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var button = event.button;
var keycode = button + 1000; //treat clicks like a button press but with higher keycode.
keyDown({keyCode: keycode}); } // it seems the keyCode of the original event cant be overwritten.
document.body.onmousewheel = function(event){
var delta = event.wheelDelta;
//if(editor_mode == MODE_DRAWING){
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var button = event.button;
var keycode = button + 1000; //treat clicks like a button press but with higher keycode.
keyDown({keyCode: keycode}); } // it seems the keyCode of the original event cant be overwritten.
document.body.onmousewheel = function(event){
var delta = event.wheelDelta;
if(delta < 0)
zoom_dist /= zoom_factor;
else if(delta > 0)
zoom_dist *= zoom_factor; }
document.body.onmouseup = function(event){
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changeVelocity(2, false, s, lasts); }
function forwardPress(e, s, lasts){
changeVelocity(2, true, s, lasts); }
function zoomInPress(e, s, lasts){
//if(editor_mode == MODE_CAMERA_POSITION)
// changeVelocity(2, true, s, lasts);
//else if(editor_mode == MODE_CAMERA_ROTATION)
zoom_dist *= zoom_factor; }
//if(editor_mode == MODE_CAMERA_POSITION)
// changeVelocity(2, true, s, lasts);
//else if(editor_mode == MODE_CAMERA_ROTATION)
zoom_dist *= zoom_factor; }
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changeVelocity(2, false, s, lasts); }
function forwardPress(e, s, lasts){
changeVelocity(2, true, s, lasts); }
function zoomInPress(e, s, lasts){
zoom_dist *= zoom_factor; }
function zoomOutPress(e, s, lasts){
zoom_dist *= zoom_factor; }
function copySelectedPoints(e, s, lasts){
if(s){
var new_selection = [];
var selection_map = {};
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addKeyListener(83, backwardPress);
addKeyListener(69, upPress);
addKeyListener(81, downPress);
addKeyListener(88, function(e, s, lasts){ // x
//if(editor_mode == MODE_DRAWING && s){ // alert('deleting points');
// addKeyListener(1000, aForwardPress); // mouse buttons
// addKeyListener(1002, cameraBackwardPress);
// addKeyListener(13, function(e, s, lasts){ if(s) nextMode(); }); // switch modes
//if(editor_mode == MODE_DRAWING){
if(s){
if(highlight_object !== null){
if(highlight_object == -1)
highlight_object = addPoint(origin); // create a new point at the origin
var alreadySelected = false; // only set for shift clicks
if(key_state[16] && key_state[16].state){ // shift key is pressed.
for(var i = 0; i < selected_points.length; ++i){
if(selected_points[i] == highlight_object){
selected_points.splice(i, 1); // deselect point
alreadySelected = true;
break; }}}
else{
selected_points.length = 0;}
if(!alreadySelected) selected_points.push(highlight_object); }
else if(!key_state[16] || !key_state[16].state)
selected_points.length = 0; }
else if(lasts && mouse_dragging ){ // drag actions
// connect selected points to highlight point with lines
if(selected_points.length && (!key_state[16] || !key_state[16].state)){ // TODO right now this really only works for drawing a single line,
if(highlight_object !== null && highlight_object < point_projections.length){
if(highlight_object == -1) highlight_object = addPoint(origin);
for(var i = 0; i < selected_points.length; ++i){
var pt = selected_points[i];
if(pt == highlight_object) continue;
addLine(pt, highlight_object); }
selected_points.length = 0; }}
// select points inside selection rectangle
else if(mouse_loc && last_mouse_down){
var minx = Math.min(mouse_loc[0], last_mouse_down[0]);
var maxx = Math.max(mouse_loc[0], last_mouse_down[0]);
var miny = Math.min(mouse_loc[1], last_mouse_down[1]);
var maxy = Math.max(mouse_loc[1], last_mouse_down[1]);
var selected_point_map = {};
if(!key_state[16] || !key_state[16].state){
selected_points.length = 0;
selected_lines.length = 0; }
else{
for(var i = 0; i < selected_points.length; ++i){
selected_point_map[selected_points[i]] = i; }}
for(var i = 0; i < point_projections.length; ++i){
if(selected_point_map[i]) continue; // already selected.
var pt = point_projections[i];
if(!pt) continue;
var _x = pt[0];
var _y = pt[1];
if(minx < _x && _x < maxx
&& miny < _y && _y < maxy){
selected_points.push(i); }}}
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addKeyListener(83, backwardPress);
addKeyListener(69, upPress);
addKeyListener(81, downPress);
addKeyListener(88, function(e, s, lasts){ // x
if(s){
if(highlight_object !== null && highlight_object > 0){ // delete highlighted object
if(highlight_object < point_projections.length){ // point
points[highlight_object] = null; }
else if(highlight_object < point_projections.length + line_midpoint_projections.length){ // line
lines[highlight_object - point_projections.length] = null; }
else throw "highlight object index to large"; }
else if(selected_points.length){ // delete selected points
for(var i = 0; i < selected_points.length; ++i){
points[selected_points[i]] = null; }
selected_points.length = 0; }
cleanupDeletedPoints();
highlight_object = null;
selected_points.length = 0; }});
// select point
addKeyListener(1000, function(e, s, lasts){
if(s){
if(highlight_object !== null){
if(highlight_object == -1)
highlight_object = addPoint(origin); // create a new point at the origin
var alreadySelected = false; // only set for shift clicks
if(key_state[16] && key_state[16].state){ // shift key is pressed.
for(var i = 0; i < selected_points.length; ++i){
if(selected_points[i] == highlight_object){
selected_points.splice(i, 1); // deselect point
alreadySelected = true;
break; }}}
else{
selected_points.length = 0;}
if(!alreadySelected) selected_points.push(highlight_object); }
else if(!key_state[16] || !key_state[16].state)
selected_points.length = 0; }
else if(lasts && mouse_dragging ){ // drag actions
// connect selected points to highlight point with lines
if(selected_points.length && (!key_state[16] || !key_state[16].state)){ // TODO right now this really only works for drawing a single line,
if(highlight_object !== null && highlight_object < point_projections.length){
if(highlight_object == -1) highlight_object = addPoint(origin);
for(var i = 0; i < selected_points.length; ++i){
var pt = selected_points[i];
if(pt == highlight_object) continue;
addLine(pt, highlight_object); }
selected_points.length = 0; }}
// select points inside selection rectangle
else if(mouse_loc && last_mouse_down){
var minx = Math.min(mouse_loc[0], last_mouse_down[0]);
var maxx = Math.max(mouse_loc[0], last_mouse_down[0]);
var miny = Math.min(mouse_loc[1], last_mouse_down[1]);
var maxy = Math.max(mouse_loc[1], last_mouse_down[1]);
var selected_point_map = {};
if(!key_state[16] || !key_state[16].state){
selected_points.length = 0;
selected_lines.length = 0; }
else{
for(var i = 0; i < selected_points.length; ++i){
selected_point_map[selected_points[i]] = i; }}
for(var i = 0; i < point_projections.length; ++i){
if(selected_point_map[i]) continue; // already selected.
var pt = point_projections[i];
if(!pt) continue;
var _x = pt[0];
var _y = pt[1];
if(minx < _x && _x < maxx
&& miny < _y && _y < maxy){
selected_points.push(i); }}}
}});
// to prevent camera from rotating beyond straight vertical
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var max_angle_delta = Math.PI / 2;
var delta_horizontal_angle = 0;
var delta_vertical_angle = 0;
var delta_position = [0,0,0];
// var MODE_DRAWING = 0;
// var MODE_CAMERA_POSITION = 1; // change the camera focus point
// var MODE_CAMERA_ROTATION = 2; // rotate and zoom camera
// var editor_mode = MODE_DRAWING;
/*
function drawMode(){
editor_mode = MODE_DRAWING;
delta_position = [0,0,0];
// delta_horizontal_angle = 0;
// delta_vertical_angle = 0;
if(last_zoom_dist) zoom_dist = last_zoom_dist;
else zoom_dist = 1;
document.body.style.cursor = "crosshair"; }
function cameraPositionMode(){
document.body.style.cursor = "default";
last_zoom_dist = zoom_dist;
delta_horizontal_angle = 0;
delta_vertical_angle = 0;
zoom_dist = NAVIGATION_ZOOM_DIST;
editor_mode = MODE_CAMERA_POSITION; }
function cameraRotationMode(){
document.body.style.cursor = "default";
delta_horizontal_angle = 0;
delta_vertical_angle = 0;
if(last_zoom_dist) zoom_dist = last_zoom_dist;
else zoom_dist = 1;
editor_mode = MODE_CAMERA_ROTATION; }
function nextMode(){
if(editor_mode == MODE_DRAWING) cameraPositionMode();
else if(editor_mode == MODE_CAMERA_POSITION) drawMode(); }
// skipping camera rotation mode
//else if(editor_mode == MODE_CAMERA_POSITION) cameraRotationMode();
//else if(editor_mode == MODE_CAMERA_ROTATION) drawMode(); }
*/
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var max_angle_delta = Math.PI / 2;
var delta_horizontal_angle = 0;
var delta_vertical_angle = 0;
var delta_position = [0,0,0];
var points = []; //global
var solo_points = {};
var lines = [];
var point_projections = [];
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return index; }
function addLine(pt0, pt1){
delete solo_points[pt0];
delete solo_points[pt1];
lines.push([pt0, pt1]);
return lines.length - 1; }
function addBox(xyz, wdh){
var x = xyz[0];
var y = xyz[1];
var z = xyz[2];
var w = wdh[0];
var d = wdh[1];
var h = wdh[2];
var x0 = x - w/2;
var y0 = y - d/2;
var z0 = z - d/2;
var x1 = x + w/2;
var y1 = y + d/2;
var z1 = z + h/2;
var a = addPoint([x0, y0, z0]);
var b = addPoint([x1, y0, z0]);
var c = addPoint([x1, y1, z0]);
var d = addPoint([x0, y1, z0]);
var e = addPoint([x0, y0, z1]);
var f = addPoint([x1, y0, z1]);
var g = addPoint([x1, y1, z1]);
var h = addPoint([x0, y1, z1]);
addLine(a, b);
addLine(b, c);
addLine(c, d);
addLine(d, a);
addLine(e, f);
addLine(f, g);
addLine(g, h);
addLine(h, e);
addLine(a, e);
addLine(b, f);
addLine(c, g);
addLine(d, h); }
function draw(canvas){
var ctx = canvas.getContext('2d');
var w = canvas.width;
var h = canvas.height;
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return index; }
function addLine(pt0, pt1){
delete solo_points[pt0];
delete solo_points[pt1];
lines.push([pt0, pt1]);
return lines.length - 1; }
function draw(canvas){
var ctx = canvas.getContext('2d');
var w = canvas.width;
var h = canvas.height;
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for(var k in solo_points){
var pt = point_projections[k];
if(pt) ctx.fillRect(pt[0] - 2, pt[1] - 2, 4, 4); }
//if(editor_mode == MODE_DRAWING){
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for(var k in solo_points){
var pt = point_projections[k];
if(pt) ctx.fillRect(pt[0] - 2, pt[1] - 2, 4, 4); }
ctx.fillStyle = "rgba(250, 0, 0, 0.9)";
ctx.fillRect(w/2 - 2, h/2 - 2, 4, 4);
for(var i = 0; i < selected_points.length; ++i){
var pt;
if(selected_points[i] == -1)
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}
ctx.fillStyle = "rgb(0,0,0)";
ctx.fillText(msg, 5, 20); }
//function buildFractal(children, func, levels, origin, scale, baseonly){
//}
function serpenskiPyramid(level, origin, scale){
if(!scale) scale = 1;
if(!origin) origin = [0, 0, 0];
if(level === undefined) level = 4;
var spoints = [[0,0,0], [0.5,0,0], [0, -0.5, 0], [0, 0, 0.5]];
for(var i = 0; i < spoints.length; ++i){
var x = spoints[i];
vector_scale(x, scale);
vector_add(x, origin, x); }
if(level > 0){
for(var i = 0; i < spoints.length; ++i){
var point = spoints[i];
vector_add(origin, point, origin);
serpenskiPyramid(level - 1, origin, 0.5 * scale);
vector_minus(origin, point, origin); }
}
else if(level == 0){
var pointRefs = [];
for(var i = 0; i < spoints.length; ++i){
vector_scale(spoints[i], 2); // scale to points to full length;
pointRefs[i] = addPoint(spoints[i]); }
for(var i = 0; i < spoints.length; ++i){
var a = pointRefs[i];
for(var j = i + 1; j < spoints.length; ++j){
var b = pointRefs[j];
addLine(a, b); }}}
}
function buildArray(origin, increment, size, buildfunc, extra1, extra2, extra3){
var point = origin.slice(0);
point_indexes = [];
for(var i = 0; i < size.length; ++i){
point_indexes[i] = 0; }
var last_index = point_indexes.length - 1;
var index = last_index;
// build object at origin.
buildfunc(point, extra1, extra2, extra3);
while(index >= 0){
//depth first
if(point_indexes[index] == size[index] - 1){
point[index] = origin[index];
point_indexes[index] = 0;
--index; }
else{
++point_indexes[index];
point[index] += increment[index];
index = last_index; // always go to the end position
buildfunc(point, extra1, extra2, extra3); }}
}
//addBox([0, 0, 0], [.5, .5, .5]);
/*
buildArray( [0, 0, 0], // origin
[2, 2, 2], // increment
[11, 1, 11], // size
addBox,
[.5, .5, .5]); */
//var a = addPoint([0, 0, 1]);
//var b = addPoint([.5, 0, 1]);
//var c = addPoint([0, .5, 1]);
//addLine(a, b);
//addLine(b, c);
//addLine(c, a);
//serpenskiPyramid(5, null, 1);
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}
ctx.fillStyle = "rgb(0,0,0)";
ctx.fillText(msg, 5, 20); }
window.onload = function(){
// load localStorage saved state.
if(localStorage.points && localStorage.lines){
points = JSON.parse(localStorage.points);
lines = JSON.parse(localStorage.lines); }
canvas = document.createElement('canvas');
document.body.appendChild(canvas);
canvas.width = window.innerWidth - 20;
canvas.height = window.innerHeight - 20;
window.onresize = function(){
canvas.width = window.innerWidth - 20;
canvas.height = window.innerHeight - 20; }
function getRotationAngle(x, size, max, center_size){
if(!center_size) center_size = 0.25; // the proportional size of the area in which no rotation is effected by the mouse movement
if(!max) max = Math.PI/128;
x -= size/2;
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var _y = y - last_mouse_down[1];
var dist2 = _x*_x + _y*_y;
if(dist2 > MIN_DRAG_DIST * MIN_DRAG_DIST){
mouse_dragging = true; }}
/*
if(editor_mode == MODE_CAMERA_ROTATION){ // rotate about center
delta_horizontal_angle = getRotationAngle(x, w, max_angle_delta/frame_rate);
delta_vertical_angle = -getRotationAngle(y, h, max_angle_delta/frame_rate); }
if(editor_mode == MODE_CAMERA_POSITION){
delta_horizontal_angle = -getRotationAngle(x, w, max_angle_delta/frame_rate);
delta_vertical_angle = getRotationAngle(y, h, max_angle_delta/frame_rate); }
else if(editor_mode == MODE_DRAWING){ */
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var _y = y - last_mouse_down[1];
var dist2 = _x*_x + _y*_y;
if(dist2 > MIN_DRAG_DIST * MIN_DRAG_DIST){
mouse_dragging = true; }}
delta_horizontal_angle = getRotationAngle(x, w, max_angle_delta/frame_rate, no_rotate_area);
delta_vertical_angle = -getRotationAngle(y, h, max_angle_delta/frame_rate, no_rotate_area);
var min_point_dist2 = LINE_HIGHLIGHT_DIST * LINE_HIGHLIGHT_DIST;
highlight_object = null;
var _x = canvas.width/2 - x;
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// ctx.fillRect(0, 0, canvas.width, canvas.height);
//
function animateLoop(){
//if(editor_mode == MODE_DRAWING){
//else if(editor_mode == MODE_CAMERA_POSITION){
// if(delta_position) moveCamera(delta_position, true); } // motion depends on camera angle
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// ctx.fillRect(0, 0, canvas.width, canvas.height);
//
function animateLoop(){
if(selected_points.length){ // move selection if exists
for(var i = 0; i < selected_points.length; ++i){
var pt = points[selected_points[i]];
vector_add(pt, delta_position, pt); }}
else{
moveCamera(delta_position, false); }
if(delta_horizontal_angle) rotateHorizontal(delta_horizontal_angle);
if(delta_vertical_angle) rotateVertical(delta_vertical_angle);
// overwrite point projections
// TODO this may not be perfect if points are deleted etc.
point_projections.length = 0;
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