refactor: move distribution related stuff to the separate package

Author: levinzonr

demo/src/main/java/io/monstarlab/mosaic/features/SliderDemo.kt

@@ -37,10 +37,10 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
-import io.monstarlab.mosaic.slider.FragmentedLinearDistribution
+import io.monstarlab.mosaic.slider.distribution.FragmentedLinearDistribution
 import io.monstarlab.mosaic.slider.Slider
 import io.monstarlab.mosaic.slider.SliderColors
-import io.monstarlab.mosaic.slider.SliderValueDistribution
+import io.monstarlab.mosaic.slider.distribution.SliderValueDistribution
 import kotlin.math.roundToInt
 import androidx.compose.material3.Slider as MaterialSlider
 

slider/src/main/java/io/monstarlab/mosaic/slider/Slider.kt

@@ -15,6 +15,7 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalLayoutDirection
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.LayoutDirection
+import io.monstarlab.mosaic.slider.distribution.SliderValueDistribution
 
 /**
  * A composable function that creates a slider UI component.

slider/src/main/java/io/monstarlab/mosaic/slider/SliderState.kt

@@ -11,6 +11,7 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.geometry.Offset
+import io.monstarlab.mosaic.slider.distribution.SliderValueDistribution
 import kotlinx.coroutines.coroutineScope
 
 /**

slider/src/main/java/io/monstarlab/mosaic/slider/ValueCheckPointDistribution.kt

@@ -1,5 +1,9 @@
 package io.monstarlab.mosaic.slider
 
+import io.monstarlab.mosaic.slider.distribution.LinearEquation
+import io.monstarlab.mosaic.slider.distribution.RangedLinearEquation
+import io.monstarlab.mosaic.slider.distribution.SliderValueDistribution
+
 public class ValueCheckPointDistribution(valuesMap: List<Pair<Float, Float>>) :
     SliderValueDistribution {
 

slider/src/main/java/io/monstarlab/mosaic/slider/FragmentedLinearDistribution.kt renamed to slider/src/main/java/io/monstarlab/mosaic/slider/distribution/FragmentedLinearDistribution.kt

@@ -1,4 +1,7 @@
-package io.monstarlab.mosaic.slider
+package io.monstarlab.mosaic.slider.distribution
+
+import io.monstarlab.mosaic.slider.fractionToValue
+import io.monstarlab.mosaic.slider.valueToFraction
 
 //TODO refactor code to not use builder
 public class FragmentedLinearDistribution private constructor(

slider/src/main/java/io/monstarlab/mosaic/slider/LinearEquation.kt renamed to slider/src/main/java/io/monstarlab/mosaic/slider/distribution/LinearEquation.kt

@@ -1,4 +1,4 @@
-package io.monstarlab.mosaic.slider
+package io.monstarlab.mosaic.slider.distribution
 
 public data class LinearEquation(
     private val m: Float,

slider/src/main/java/io/monstarlab/mosaic/slider/distribution/ParabolicValueDistribution.kt

@@ -0,0 +1,32 @@
+package io.monstarlab.mosaic.slider.distribution
+
+import kotlin.math.sqrt
+
+/**
+ * Represents a parabolic distribution strategy for slider values.
+ *
+ * This strategy calculates interpolated and inversely interpolated values based on a parabolic equation:
+ * f(x) = a * x^2 + b * x + c
+ *
+ * @property a coefficient of the x^2 term in the parabolic equation
+ * @property b coefficient of the x term in the parabolic equation
+ * @property c constant term in the parabolic equation
+ * @constructor Creates a ParabolicValueDistribution with the given coefficients.
+ */
+public class ParabolicValueDistribution(
+    private val a: Float,
+    private val b: Float,
+    private val c: Float,
+) : SliderValueDistribution {
+
+    override fun inverse(value: Float): Float {
+        if (value == 0f) return 0f
+
+        val d = (b * b) - 4 * a * (c - value)
+        return (-b + sqrt(d)) / (2 * a)
+    }
+
+    override fun interpolate(value: Float): Float {
+        return a * (value * value) + b * value + c
+    }
+}

slider/src/main/java/io/monstarlab/mosaic/slider/RangedLinearEquation.kt renamed to slider/src/main/java/io/monstarlab/mosaic/slider/distribution/RangedLinearEquation.kt

@@ -1,4 +1,4 @@
-package io.monstarlab.mosaic.slider
+package io.monstarlab.mosaic.slider.distribution
 
 public data class RangedLinearEquation(
     val equation: LinearEquation,

slider/src/main/java/io/monstarlab/mosaic/slider/SliderValueDistribution.kt renamed to slider/src/main/java/io/monstarlab/mosaic/slider/distribution/SliderValueDistribution.kt

@@ -1,4 +1,4 @@
-package io.monstarlab.mosaic.slider
+package io.monstarlab.mosaic.slider.distribution
 
 import androidx.annotation.FloatRange
 import kotlin.math.sqrt
@@ -59,44 +59,3 @@ public interface SliderValueDistribution {
         }
     }
 }
-
-internal fun SliderValueDistribution.interpolate(
-    range: ClosedFloatingPointRange<Float>,
-): ClosedFloatingPointRange<Float> {
-    return interpolate(range.start)..interpolate(range.endInclusive)
-}
-
-internal fun SliderValueDistribution.inverse(
-    range: ClosedFloatingPointRange<Float>,
-): ClosedFloatingPointRange<Float> {
-    return inverse(range.start)..inverse(range.endInclusive)
-}
-
-/**
- * Represents a parabolic distribution strategy for slider values.
- *
- * This strategy calculates interpolated and inversely interpolated values based on a parabolic equation:
- * f(x) = a * x^2 + b * x + c
- *
- * @property a coefficient of the x^2 term in the parabolic equation
- * @property b coefficient of the x term in the parabolic equation
- * @property c constant term in the parabolic equation
- * @constructor Creates a ParabolicValueDistribution with the given coefficients.
- */
-public class ParabolicValueDistribution(
-    private val a: Float,
-    private val b: Float,
-    private val c: Float,
-) : SliderValueDistribution {
-
-    override fun inverse(value: Float): Float {
-        if (value == 0f) return 0f
-
-        val d = (b * b) - 4 * a * (c - value)
-        return (-b + sqrt(d)) / (2 * a)
-    }
-
-    override fun interpolate(value: Float): Float {
-        return a * (value * value) + b * value + c
-    }
-}

slider/src/test/java/io/monstarlab/mosaic/slider/FragmentedLinearDistributionTest.kt

@@ -1,5 +1,6 @@
 package io.monstarlab.mosaic.slider
 
+import io.monstarlab.mosaic.slider.distribution.FragmentedLinearDistribution
 import org.junit.After
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertNotEquals