fix: reset mode if it has changed

fixes #25

src/cursor.cpp

@@ -405,9 +405,14 @@ void CDynamicCursors::calculate(EModeUpdate type) {
 
     // calculate angle and zoom
     if (mode) {
+        // reset mode if it has changed
+        if (mode != lastMode) mode->reset();
+
         if (mode->strategy() == type) resultMode = mode->update(g_pPointerManager->pointerPos);
     } else resultMode = SModeResult();
 
+    lastMode = mode;
+
     if (**PSHAKE) {
         if (type == TICK) resultShake = shake.update(g_pPointerManager->pointerPos);
 

src/cursor.hpp

@@ -55,8 +55,10 @@ class CDynamicCursors {
     CModeRotate rotate;
     CModeTilt tilt;
     CModeStretch stretch;
+
     /* returns the current mode, nullptr if none is selected */
     IMode* currentMode();
+    IMode* lastMode; // used to reset the mode if it was switched (to prune stale data)
 
     // shake
     CShake shake;

src/mode/Mode.hpp

@@ -9,8 +9,10 @@ class IMode {
   public:
     /* returns the desired updating strategy for the given mode */
     virtual EModeUpdate strategy() = 0;
-    /* updates the calculations and returns the new angle */
+    /* updates the calculations and returns the new result */
     virtual SModeResult update(Vector2D pos) = 0;
+    /* reset the internal stuff of the mode */
+    virtual void reset() = 0;
     /* called on warp, an update will be sent afterwards (probably) */
     virtual void warp(Vector2D old, Vector2D pos) = 0;
 };

src/mode/ModeRotate.cpp

@@ -13,6 +13,12 @@ SModeResult CModeRotate::update(Vector2D pos) {
     auto length = g_pShapeRuleHandler->getIntOr(CONFIG_ROTATE_LENGTH, **PLENGTH);
     auto offset = g_pShapeRuleHandler->getFloatOr(CONFIG_ROTATE_OFFSET, **POFFSET);
 
+    // this mode has just started, start at upright orientation
+    if (end.y == 0 && end.x == 0) {
+        end.x = pos.x;
+        end.y = pos.y + length;
+    }
+
     // translate to origin
     end.x -= pos.x;
     end.y -= pos.y;
@@ -49,3 +55,7 @@ SModeResult CModeRotate::update(Vector2D pos) {
 void CModeRotate::warp(Vector2D old, Vector2D pos) {
     end += (pos - old);
 }
+
+void CModeRotate::reset() {
+    end = {0, 0};
+}

src/mode/ModeRotate.hpp

@@ -9,6 +9,7 @@ class CModeRotate : public IMode {
   public:
     virtual EModeUpdate strategy();
     virtual SModeResult update(Vector2D pos);
+    virtual void reset();
     virtual void warp(Vector2D old, Vector2D pos);
 
   private:

src/mode/ModeStretch.cpp

@@ -15,10 +15,10 @@ SModeResult CModeStretch::update(Vector2D pos) {
 
     // create samples array
     int max = g_pHyprRenderer->m_pMostHzMonitor->refreshRate / 10; // 100ms worth of history
-    samples.resize(max);
+    samples.resize(max, pos);
 
     // capture current sample
-    samples[samples_index] = Vector2D{pos};
+    samples[samples_index] = pos;
     int current = samples_index;
     samples_index = (samples_index + 1) % max; // increase for next sample
     int first = samples_index;
@@ -47,3 +47,8 @@ void CModeStretch::warp(Vector2D old, Vector2D pos) {
     for (auto& sample : samples)
         sample += delta;
 }
+
+void CModeStretch::reset() {
+    samples.clear();
+    samples_index = 0;
+}

src/mode/ModeStretch.hpp

@@ -6,6 +6,7 @@ class CModeStretch : public IMode {
   public:
     virtual EModeUpdate strategy();
     virtual SModeResult update(Vector2D pos);
+    virtual void reset();
     virtual void warp(Vector2D old, Vector2D pos);
 
   private:

src/mode/ModeTilt.cpp

@@ -15,10 +15,10 @@ SModeResult CModeTilt::update(Vector2D pos) {
 
     // create samples array
     int max = g_pHyprRenderer->m_pMostHzMonitor->refreshRate / 10; // 100ms worth of history
-    samples.resize(max);
+    samples.resize(max, pos);
 
     // capture current sample
-    samples[samples_index] = Vector2D{pos};
+    samples[samples_index] = pos;
     int current = samples_index;
     samples_index = (samples_index + 1) % max; // increase for next sample
     int first = samples_index;
@@ -37,3 +37,8 @@ void CModeTilt::warp(Vector2D old, Vector2D pos) {
     for (auto& sample : samples)
         sample += delta;
 }
+
+void CModeTilt::reset() {
+    samples.clear();
+    samples_index = 0;
+}

src/mode/ModeTilt.hpp

@@ -6,6 +6,7 @@ class CModeTilt : public IMode {
   public:
     virtual EModeUpdate strategy();
     virtual SModeResult update(Vector2D pos);
+    virtual void reset();
     virtual void warp(Vector2D old, Vector2D pos);
 
   private: