1 files changed, 50 insertions, 0 deletions
diff --git a/src/utils.js b/src/utils.js
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index 0000000..8f6458e
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+++ b/src/utils.js
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+const internals = {
+    kDefaultStages: [25, 50, 75],
+};
+
+/**
+ * Convert percentage to pixel size
+ * @param {number} percentage - Percentage value (can be negative)
+ * @param {number} dimension - Dimension in pixels
+ * @returns {number} Pixel value
+ */
+export function percentToPixel(percentage, dimension) {
+    return (percentage * dimension) / 100;
+}
+
+/**
+ * Get stage values from parsed map or use defaults
+ * @param {Array} stageOverrides - Stage overrides from parsed map
+ * @returns {Array<number>} Array of 3 stage values
+ */
+export function getStageValues(stageOverrides) {
+    const stages = [...internals.kDefaultStages];
+
+    if (stageOverrides && stageOverrides.length > 0) {
+        stageOverrides.forEach((override) => {
+            const index = { i: 0, ii: 1, iii: 2 }[override.stage];
+            if (index !== undefined) {
+                stages[index] = override.value;
+            }
+        });
+    }
+
+    return stages;
+}
+
+/**
+ * Creates a render-friendly component map.
+ * @param {Array<Object>} The list of components
+ * @param {number} mapWidth - Map width in pixels
+ * @param {number} mapHeight - Map height in pixels
+ * @returns {Map} Pixel value
+ */
+export function createComponentMap(components, width, height) {
+    return components.reduce((map, current) => {
+        map[current.label.toLowerCase()] = [
+            percentToPixel(current.coordinates[0], width),
+            percentToPixel(current.coordinates[1], height),
+        ];
+        return map;
+    }, {});
+}