main.js
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var canvas = $('canvas').attr({'width' : 1200, 'height' : 500}).css('border', '1px solid black');
var context = canvas.get(0).getContext('2d');
var model = {
width : 0,
height : 0,
point : {
x : 0,
y : 0
}
};
var select = $('#ukr_seeds');
select.change(getParams);
getParams();
function getParams()
{
$.ajax({
url: location.href + '/get-params',
data: {
'crop_id': select.val()
},
type: 'GET',
dataType: 'json',
success: function(data) {
model.width = data.body.WIDTH;
model.height = data.body.HEIGHT;
model.point.x = data.body.X;
model.point.y = data.body.Y;
canvas.attr({'width' : model.width + 20, 'height' : model.height + 20});
context.clearRect(0, 0, canvas.width, canvas.height);
console.log(model);
}
});
}
function draw()
{
var image = $('img').get(0);
context.clearRect(0, 0, canvas.width, canvas.height);
context.drawImage(image, model.point.x, model.point.y, model.width, model.height, 10, 10, model.width, model.height);
console.log( image.width, image.height );
}