piskel/test/js/tools/transform/TransformUtilsTest.js

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describe("TransformUtils suite", function() {
var A = '#000000';
var B = '#ff0000';
var O = Constants.TRANSPARENT_COLOR;
var HORIZONTAL = pskl.tools.transform.TransformUtils.HORIZONTAL;
var VERTICAL = pskl.tools.transform.TransformUtils.VERTICAL;
var CLOCKWISE = pskl.tools.transform.TransformUtils.CLOCKWISE;
var COUNTERCLOCKWISE = pskl.tools.transform.TransformUtils.COUNTERCLOCKWISE;
// shortcuts
var frameEqualsGrid = test.testutils.frameEqualsGrid;
var toFrameGrid = test.testutils.toFrameGrid;
/*******************************/
/************ FLIP *************/
/*******************************/
it("flips a frame vertically", function () {
// create frame
var frame = pskl.model.Frame.fromPixelGrid(toFrameGrid([
[A, O],
[O, B]
]));
// should have flipped
pskl.tools.transform.TransformUtils.flip(frame, VERTICAL);
frameEqualsGrid(frame, [
[O, A],
[B, O]
]);
});
it("flips a frame horizontally", function () {
// create frame
var frame = pskl.model.Frame.fromPixelGrid(toFrameGrid([
[A, O],
[O, B]
]));
// should have flipped
pskl.tools.transform.TransformUtils.flip(frame, HORIZONTAL);
frameEqualsGrid(frame, [
[O, B],
[A, O]
]);
});
it("flips rectangular frame", function () {
// create frame
var frame = pskl.model.Frame.fromPixelGrid(toFrameGrid([
[A, O],
[A, O],
[A, O]
]));
// should have flipped
pskl.tools.transform.TransformUtils.flip(frame, VERTICAL);
frameEqualsGrid(frame, [
[O, A],
[O, A],
[O, A]
]);
// should be the same
pskl.tools.transform.TransformUtils.flip(frame, HORIZONTAL);
frameEqualsGrid(frame, [
[O, A],
[O, A],
[O, A]
]);
});
/*******************************/
/*********** ROTATE ************/
/*******************************/
it("rotates a frame counterclockwise", function () {
// create frame
var frame = pskl.model.Frame.fromPixelGrid(toFrameGrid([
[A, O],
[O, B]
]));
// rotate once
pskl.tools.transform.TransformUtils.rotate(frame, COUNTERCLOCKWISE);
frameEqualsGrid(frame, [
[O, B],
[A, O]
]);
// rotate twice
pskl.tools.transform.TransformUtils.rotate(frame, COUNTERCLOCKWISE);
frameEqualsGrid(frame, [
[B, O],
[O, A]
]);
// rotate 3
pskl.tools.transform.TransformUtils.rotate(frame, COUNTERCLOCKWISE);
frameEqualsGrid(frame, [
[O, A],
[B, O]
]);
// rotate 4 - back to initial state
pskl.tools.transform.TransformUtils.rotate(frame, COUNTERCLOCKWISE);
frameEqualsGrid(frame, [
[A, O],
[O, B]
]);
});
it("rotates a frame clockwise", function () {
// create frame
var frame = pskl.model.Frame.fromPixelGrid(toFrameGrid([
[A, O],
[O, B]
]));
// rotate once
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[O, A],
[B, O]
]);
// rotate twice
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[B, O],
[O, A]
]);
// rotate 3
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[O, B],
[A, O]
]);
// rotate 4 - back to initial state
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[A, O],
[O, B]
]);
});
it("rotates a rectangular frame", function () {
// create frame
var frame = pskl.model.Frame.fromPixelGrid(toFrameGrid([
[A, O],
[A, O],
[B, O],
[B, O]
]));
// rotate once
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[O, O],
[B, A],
[O, O],
[O, O]
]);
// rotate twice
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[O, O],
[O, B],
[O, A],
[O, O]
]);
// rotate 3
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[O, O],
[O, O],
[A, B],
[O, O]
]);
// rotate 4
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[O, O],
[A, O],
[B, O],
[O, O]
]);
});
it("rotates a rectangular (horizontal) frame", function () {
// create frame
var frame = pskl.model.Frame.fromPixelGrid(toFrameGrid([
[O, O, O, O],
[A, A, B, B]
]));
// rotate once
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[O, A, O, O],
[O, B, O, O]
]);
// rotate twice
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[O, B, A, O],
[O, O, O, O]
]);
// rotate 3
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[O, O, B, O],
[O, O, A, O]
]);
// rotate 4
pskl.tools.transform.TransformUtils.rotate(frame, CLOCKWISE);
frameEqualsGrid(frame, [
[O, O, O, O],
[O, A, B, O]
]);
});
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/*******************************/
/*********** CENTER ************/
/*******************************/
it("centers a frame", function () {
// create frame
var frame = pskl.model.Frame.fromPixelGrid(toFrameGrid([
[A, B, O, O],
[B, A, O, O],
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[O, O, O, O],
[O, O, O, O]
]));
// should be centered
pskl.tools.transform.TransformUtils.center(frame);
frameEqualsGrid(frame, [
[O, O, O, O],
[O, A, B, O],
[O, B, A, O],
[O, O, O, O]
]);
});
});