comparison layer/Colour3DPlotLayer.cpp @ 537:0cc658fe1423

* Fix colour 3d plot's habit of repeating column 0 in column -1's position

             for (int x = 0; x < w; ++x) {
 
                 targetLine[x] = 0;
 
                 float sx0 = sxa[x*2];
+                if (sx0 < 0) continue;
                 int sx0i = int(sx0 + epsilon);
                 if (sx0i >= sw) break;
-                if (sx0i < 0) continue;
 
                 float a, b, value;
 
                 float sx1 = sxa[x*2+1];
                 if (sx1 > sx0 + 1.f) {

 
                 uchar *sourceLine = source->scanLine(sy);
             
                 for (int x = 0; x < w; ++x) {
 
-                    int sx1i = int(sxa[x*2 + 1]);
-                    if (sx1i < 0) continue;
-
-                    int sx0i = int(sxa[x*2] + epsilon);
+                    float sx1 = sxa[x*2 + 1];
+                    if (sx1 < 0) continue;
+                    int sx1i = int(sx1);
+
+                    float sx0 = sxa[x*2];
+                    if (sx0 < 0) continue;
+                    int sx0i = int(sx0 + epsilon);
                     if (sx0i >= sw) break;
 
                     uchar peak = 0;
                     for (int sx = sx0i; sx <= sx1i; ++sx) {
                         if (sx < 0 || sx >= sw) continue;