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Add static (S) and dynamic (Z) zoom to spline segmentation #66

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Add static (S) and dynamic (Z) zoom to spline segmentation #66

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51 changes: 48 additions & 3 deletions spline_segmentation/static/spline_segmentation/segmentation.js
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,12 @@ var g_labelToMove = -1;
var g_moveDistanceThreshold = 8;
var g_drawLine = false;
var g_currentLabel = -1;
let g_zoom = false;
let g_mousePositionX;
let g_mousePositionY;
let g_zoomStatic = false;
let g_mousePositionXStaticZoom;
let g_mousePositionYStaticZoom;

function getMaxObjectID() {
var max = -1;
Expand All @@ -28,11 +34,18 @@ function setupSegmentation() {
data = {label: g_labelButtons[g_currentLabel], control_points: []};
g_controlPoints[g_currentFrameNr][g_currentObject] = data;
}

var scale = g_canvasWidth / $('#canvas').width();
console.log(g_zoom, g_canvasWidth, $('#canvas').width(), g_canvasHeight, $('#canvas').height())
var scale = g_canvasWidth / $('#canvas').width();
var mouseX = (e.pageX - this.offsetLeft)*scale;
var mouseY = (e.pageY - this.offsetTop)*scale;

if(g_zoomStatic == true){
mouseX = g_mousePositionXStaticZoom - (g_mousePositionXStaticZoom - mouseX)/2;
mouseY = g_mousePositionYStaticZoom - (g_mousePositionYStaticZoom - mouseY)/2;
}

var point = getClosestPoint(mouseX, mouseY);

if(point !== false) {
// Activate object of this point
g_currentObject = point.object;
Expand All @@ -57,12 +70,35 @@ function setupSegmentation() {
redrawSequence();
});

$(document).keydown(function(e) {
console.log(String.fromCharCode(e.which));
if(String.fromCharCode(e.which) == 'Z') {
g_zoom = true;
}
if(String.fromCharCode(e.which) == 'S') {
if(g_zoomStatic == false) {
g_mousePositionXStaticZoom = g_mousePositionX;
g_mousePositionYStaticZoom = g_mousePositionY;
}
g_zoomStatic = true;
}
});
$(document).keyup(function(e) {
console.log('up', String.fromCharCode(e.which));
if(String.fromCharCode(e.which) == 'Z') {
g_zoom = false;
}
if(String.fromCharCode(e.which) == 'S') {
g_zoomStatic = false;
}
});
$('#canvas').mousemove(function(e) {
var scale = g_canvasWidth / $('#canvas').width();
var mouseX = (e.pageX - this.offsetLeft)*scale;
var mouseY = (e.pageY - this.offsetTop)*scale;
var cursor = 'default';

g_mousePositionX = mouseX;
g_mousePositionY = mouseY;

if(g_move) {
cursor = 'move';
Expand Down Expand Up @@ -346,6 +382,15 @@ function redrawSequence() {
var index = g_currentFrameNr - g_startFrame;
g_context.drawImage(g_sequence[index], 0, 0, g_canvasWidth, g_canvasHeight);
redraw();
if(g_zoom) {
// Zoom at mouse position when moving control points
zoomAtMousePosition(g_mousePositionX, g_mousePositionY);
}
if(g_zoomStatic) {
// Zoom at initial mouse position when moving control points
zoomAtMousePosition(g_mousePositionXStaticZoom, g_mousePositionYStaticZoom);
}

}

function getLabelIdxWithId(id) {
Expand Down