minor improvement

DedeHai · DedeHai · commit fa4c23b76ec7 · 2024-11-27T22:23:48.000+01:00
diff --git a/wled00/FX.cpp b/wled00/FX.cpp
@@ -7737,9 +7737,9 @@ uint16_t mode_2Doctopus() {
     const int C_Y = (rows / 2) + ((SEGMENT.custom2 - 128)*rows)/255;
     for (int x = 0; x < cols; x++) {
       for (int y = 0; y < rows; y++) {
-        rMap[XY(x, y)].angle  = int(40.7436f * atan2_t((y - C_Y), (x - C_X)));  // avoid 128*atan2()/PI
         int dx = (x - C_X);
         int dy = (y - C_Y);
+        rMap[XY(x, y)].angle  = int(40.7436f * atan2_t(dy, dx));  // avoid 128*atan2()/PI
         rMap[XY(x, y)].radius = sqrtf(dx * dx + dy * dy) * mapp; //thanks Sutaburosu
       }
     }

Original file line number	Diff line number	Diff line change
`@@ -7737,9 +7737,9 @@ uint16_t mode_2Doctopus() {`
`7737`	`7737`	`const int C_Y = (rows / 2) + ((SEGMENT.custom2 - 128)*rows)/255;`
`7738`	`7738`	`for (int x = 0; x < cols; x++) {`
`7739`	`7739`	`for (int y = 0; y < rows; y++) {`
`7740`		`- rMap[XY(x, y)].angle = int(40.7436f * atan2_t((y - C_Y), (x - C_X))); // avoid 128*atan2()/PI`
`7741`	`7740`	`int dx = (x - C_X);`
`7742`	`7741`	`int dy = (y - C_Y);`
	`7742`	`+ rMap[XY(x, y)].angle = int(40.7436f * atan2_t(dy, dx)); // avoid 128*atan2()/PI`
`7743`	`7743`	`rMap[XY(x, y)].radius = sqrtf(dx * dx + dy * dy) * mapp; //thanks Sutaburosu`
`7744`	`7744`	`}`
`7745`	`7745`	`}`