From 3176a1e15e724e0d30bb7c978f3878447642b1e9 Mon Sep 17 00:00:00 2001
From: Damian Kowalski <s464894@labs.wmi.amu.edu.pl>
Date: Sun, 7 Apr 2024 14:29:53 +0200
Subject: [PATCH] linear blur

---
 src/core/transformations/blur_linear.cpp | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/core/transformations/blur_linear.cpp b/src/core/transformations/blur_linear.cpp
index c24f9e8..f5d482c 100644
--- a/src/core/transformations/blur_linear.cpp
+++ b/src/core/transformations/blur_linear.cpp
@@ -10,15 +10,32 @@ BlurLinear::BlurLinear(PNM* img, ImageViewer* iv) :
 {
 }
 
-PNM* BlurLinear::transform()
-{
+PNM* BlurLinear::transform() {
     int maskSize = getParameter("size").toInt();
     QList<QVariant> tmpMask = getParameter("mask").toList();
     bool normalize = getParameter("normalize").toBool();
 
     math::matrix<float> mask(maskSize, maskSize);
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    int currentMask = 0;
+    for (int x = 0; x < maskSize; x++) {
+        for (int y = 0; y < maskSize; y++) {
+            mask(x, y) = tmpMask.at(currentMask).toDouble();
+            currentMask++;
+        }
+    }
+
+    if (normalize) {
+        float summed = sum(mask);
+        if (summed == 0) {
+            summed = 1.0;
+        }
+        for (int x = 0; x < maskSize; x++) {
+            for (int y = 0; y < maskSize; y++) {
+                mask(x, y) /= summed;
+            }
+        }
+    }
 
     return convolute(mask, RepeatEdge);
 }