50 lines
1.4 KiB
JavaScript
50 lines
1.4 KiB
JavaScript
//CONSTANTS
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const WIDTH = 1000;
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const ASPECT_RATIO = 1/2;
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const MOVE_PIECES = 1/32;
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//CANVAS SHIT
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let ctx;
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let canvas;
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let img; //THE PANORAMA IMAGE
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//CURRENT IMAGE STATE
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let x1 = WIDTH / 2;
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let x2; //TODO? Unused
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let turn = 0; //NEGATIVE MEANS IT IS TURNED LEFT FROM CENTER, POSITIVE IS RIGHT
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function load_panorama()
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{
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canvas = document.getElementById('panorama');
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ctx = canvas.getContext('2d');
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img = new Image(); //IMAGE
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ctx.canvas.height = WIDTH * ASPECT_RATIO; //TODO! Possible shit happening
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ctx.canvas.width = WIDTH / 2; //USER WILL SEE A 1/2 OF THE PANORAMA AT THE TIME
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img.onload = function()
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{
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x2 = img.width;
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ctx.drawImage(img, x1, 0, x2, img.height, 0, 0, WIDTH, WIDTH * ASPECT_RATIO); //DRAW A HALF OF img
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};
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img.src = './res/img/test.jpg';
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}
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function turn_left()
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{
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//MOVE AN 8th TO LEFT
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x1 -= WIDTH * MOVE_PIECES;
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x2 -= WIDTH * MOVE_PIECES;
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if ((Math.abs(turn) - (1/MOVE_PIECES / 2)) >= 0)
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{
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//ctx.drawImage(img, img.width - WIDTH * MOVE_PIECES * (Math.abs(turn) - (1/MOVE_PIECES / 2)), 0, img.width, img.height, 0, 0, WIDTH * MOVE_PIECES * (Math.abs(turn) - (1/MOVE_PIECES / 2)), WIDTH * ASPECT_RATIO); //DRAW RIGHT PART ON THE LEFT SIDE //TODO
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return;
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}
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ctx.drawImage(img, x1, 0, img.width - WIDTH * MOVE_PIECES, img.height, 0, 0, WIDTH, WIDTH * ASPECT_RATIO); //DRAW
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turn--;
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} |