+46
-1
lines changedFilter options
+46
-1
lines changed Original file line number Diff line number Diff line change
@@ -6,6 +6,7 @@
6 6 7 7
package com.almasb.fxgl.texture
8 8 9 +
import com.almasb.fxgl.animation.AnimatedImage
9 10
import com.almasb.fxgl.core.concurrent.Async
10 11
import com.almasb.fxgl.logging.Logger
11 12
import javafx.scene.Group
@@ -611,3 +612,34 @@ fun writeToFile(image: Image, filePath: Path): Boolean {
611 612
}
612 613
}
613 614 615 +
/**
616 +
* Using given [images] interpolates between them to produce intermediate images (inbetweening).
617 +
* The given [images] list must have at least 2 images, otherwise a new list containing the originals is returned.
618 +
*
619 +
* @return list with intermediate images, including the original images.
620 +
* The new list size is (images.size - 1) * [numFramesBetweenImages] + (images.size).
621 +
*/
622 +
fun interpolateIntermediateImages(images: List<Image>, numFramesBetweenImages: Int): List<Image> {
623 +
if (images.size < 2)
624 +
return ArrayList(images)
625 + 626 +
val result = arrayListOf<Image>()
627 + 628 +
images.zipWithNext().forEach { (img1, img2) ->
629 +
val anim = AnimatedImage(img1, img2)
630 + 631 +
result += img1
632 + 633 +
repeat(numFramesBetweenImages) { i ->
634 + 635 +
// we add +1 since i == 0 will give us [img1], which we add manually, so ignore
636 +
// and i+1 == numFramesBetweenImages will give us [img2],
637 +
// which we also add manually during next cycle, so ignore by +1
638 +
result += anim.getValue((i + 1) / (numFramesBetweenImages.toDouble() + 1))
639 +
}
640 +
}
641 + 642 +
result += images.last()
643 + 644 +
return result
645 +
}
Original file line number Diff line number Diff line change
@@ -10,9 +10,9 @@ import javafx.geometry.HorizontalDirection
10 10
import javafx.geometry.VerticalDirection
11 11
import javafx.scene.paint.Color
12 12
import org.hamcrest.MatcherAssert.assertThat
13 +
import org.hamcrest.Matchers.*
13 14
import org.junit.jupiter.api.Test
14 15 15 - 16 16
/**
17 17
*
18 18
* @author Almas Baimagambetov (almaslvl@gmail.com)
@@ -64,4 +64,17 @@ class ImagesTest {
64 64 65 65
assertThat("Diagonal flip is not correct", matchPixels(expected, Texture(result)))
66 66
}
67 + 68 +
@Test
69 +
fun `Interpolate intermediate images`() {
70 +
val img1 = ColoredTexture(200, 200, Color.WHITE).image
71 +
val img2 = ColoredTexture(200, 200, Color.RED).image
72 +
val img3 = ColoredTexture(200, 200, Color.BLACK).image
73 + 74 +
val result = interpolateIntermediateImages(listOf(img1, img2, img3), 10)
75 +
assertThat(result.size, `is`(10*2 + 3))
76 +
assertThat(result[0], `is`(img1))
77 +
assertThat(result[11], `is`(img2))
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assertThat(result[22], `is`(img3))
79 +
}
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}
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