optionale Aufgabe

Startcode/mnistVisualization.c

@@ -1,8 +1,12 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
-#include "mnistVisualization.h"
+
+#define Matrix RaylibMatrix
 #include "raylib.h"
+#undef Matrix
+
+#include "mnistVisualization.h"
 
 #define MAX_TEXT_LEN 100
 
@@ -13,6 +17,9 @@ typedef struct
     const unsigned char *predictions;
     unsigned int currentIdx;
     Vector2 pixelSize;
+    int isDrawing;
+    GrayScaleImage canvas;
+    NeuralNetwork model;
 } MnistVisualization;
 
 typedef struct
@@ -55,16 +62,23 @@ static MnistVisualization *createVisualizationContainer(const GrayScaleImageSeri
 
         if(container != NULL)
         {
+            container->canvas.width = series->images[0].width;
+            container->canvas.height = series->images[0].height;
+            container->canvas.buffer = (unsigned char *)calloc(container->canvas.width * container->canvas.height, sizeof(unsigned char));
+            container->model = loadModel("mnist_model.info2");
+
             Vector2 pixelSize = {(int)(size.x / series->images[0].width), (int)(size.y / series->images[0].height)};
             container->pixelSize = pixelSize;
             container->series = series;
             container->predictions = predictions;
+            container->isDrawing = 0;
         }
     }
 
     return container;
 }
 
+
 static void drawTextLabel(const TextLabel *label)
 {
     DrawText(label->text, label->position.x, label->position.y, label->fontSize, label->color);
@@ -99,7 +113,11 @@ static void drawAll(const MnistVisualization *container, const TextLabel *naviga
     BeginDrawing();
     ClearBackground(BLACK);
     
-    drawDigit(container->series->images[container->currentIdx], container->position, container->pixelSize);
+    if (container->isDrawing) {
+        drawDigit(container->canvas, container->position, container->pixelSize);
+    } else {
+        drawDigit(container->series->images[container->currentIdx], container->position, container->pixelSize);
+    }
     drawTextLabel(navigationLabel);
     drawTextLabel(predictionLabel);
         
@@ -114,6 +132,10 @@ static int checkUserInput()
         inputResult = -1;
     else if(IsKeyReleased(KEY_RIGHT))
         inputResult = 1;
+    else if(IsKeyReleased(KEY_UP))
+        inputResult = 2;
+    else if(IsKeyReleased(KEY_DOWN))
+        inputResult = 3;
     
     return inputResult;
 }
@@ -137,8 +159,41 @@ static void updatePredictionLabel(TextLabel *predictionLabel, unsigned char true
 
 static void update(MnistVisualization *container, TextLabel *predictionLabel, int updateDirection)
 {
-    updateDisplayContainer(container, updateDirection);
-    updatePredictionLabel(predictionLabel, container->series->labels[container->currentIdx], container->predictions[container->currentIdx]);
+    if (updateDirection == 2)
+    {
+        container->isDrawing = !container->isDrawing;
+    }
+    else if (updateDirection == 3)
+    {
+        memset(container->canvas.buffer, 0, container->canvas.width * container->canvas.height);
+    }
+    else if (!container->isDrawing)
+    {
+        updateDisplayContainer(container, updateDirection);
+    }
+
+    if (container->isDrawing == 1 && IsMouseButtonDown(MOUSE_BUTTON_LEFT))
+    {
+        int col = GetMouseX() / (int)container->pixelSize.x;
+        int row = GetMouseY() / (int)container->pixelSize.y;
+
+        if (col >= 0 && col < container->canvas.width && row >= 0 && row < container->canvas.height)
+        {
+            container->canvas.buffer[row * container->canvas.width + col] = 255;
+        }
+    }
+
+    if (container->isDrawing)
+    {
+        unsigned char *liveResult = predict(container->model, &container->canvas, 1);
+        unsigned char predictedDigit = liveResult[0];
+        free(liveResult);
+        updatePredictionLabel(predictionLabel, 0, predictedDigit);
+    }
+    else
+    {
+        updatePredictionLabel(predictionLabel, container->series->labels[container->currentIdx], container->predictions[container->currentIdx]);
+    }
 }
 
 void showMnist(unsigned int windowWidth, unsigned int windowHeight, const GrayScaleImageSeries *series, const unsigned char predictions[])
@@ -146,7 +201,7 @@ void showMnist(unsigned int windowWidth, unsigned int windowHeight, const GraySc
     const Vector2 windowSize = {windowWidth, windowHeight};
 
     MnistVisualization *container = createVisualizationContainer(series, predictions, windowSize);
-    TextLabel *navigationLabel = createTextLabel("Use left and right key to navigate ...", 20, WHITE);
+    TextLabel *navigationLabel = createTextLabel("Use left and right key to navigate\n Use up and down key to enable free-Drawing and reset", 20, WHITE);
     TextLabel *predictionLabel = createTextLabel("", 20, WHITE);
     predictionLabel->position.x = 10;
     predictionLabel->position.y = windowSize.y - 50;
@@ -167,6 +222,11 @@ void showMnist(unsigned int windowWidth, unsigned int windowHeight, const GraySc
 
     CloseWindow();
 
+    if(container != NULL)
+    {
+        free(container->canvas.buffer);
+        clearModel(&container->model);
+    }
     free(container);
     free(navigationLabel);
     free(predictionLabel);