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much more elegant solution than stretching texture using batch

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minjaesong
2023-08-02 16:37:15 +09:00
parent 3308f09e08
commit 821c7c77d8
8 changed files with 88 additions and 37 deletions
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18
src/net/torvald/terrarum/modulebasegame/clut/Skybox.kt
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@@ -5,6 +5,7 @@ import com.badlogic.gdx.graphics.Texture
import com.badlogic.gdx.graphics.g2d.TextureRegion
import com.badlogic.gdx.utils.Disposable
import com.jme3.math.FastMath
import com.jme3.math.Vector2f
import net.torvald.colourutil.CIEXYZ
import net.torvald.colourutil.toColor
import net.torvald.colourutil.toRGB
@@ -55,12 +56,25 @@ object Skybox : Disposable {
return texRegions.get(alb * elevCnt + elev, turb)
}
fun getStrip(turbidity: Double, albedo: Double): TextureRegion {
fun getUV(elevationDeg: Double, turbidity: Double, albedo: Double): Pair<Texture, FloatArray> {
val turb = turbidity.coerceIn(1.0, 10.0).minus(1.0).times(3.0).roundToInt()
val alb = albedo.coerceIn(0.1, 0.9).minus(0.1).times(5.0).roundToInt()
return texStripRegions.get(alb, turb)
val region = texStripRegions.get(alb, turb)
val elev = elevationDeg.coerceIn(-75.0, 75.0).plus(75.0).div(150.0)
val u = region.u + (elev / albedoCnt).toFloat()
return tex to floatArrayOf(
u,
region.v,
u,
region.v2
)
}
private val texcoordEpsilon = 1f / 131072f
private fun Float.scaleFun() =
(1f - 1f / 2f.pow(this/6f)) * 0.97f