feat: rotate mode angle offset

close #4

README.md

@@ -34,6 +34,8 @@ This plugin is still very early in its development. There are also multiple thin
 - [ ] per-shape length and starting angle (if possible)
 - [X] cursor shake to find
 - [ ] overdue refactoring (wait for aquamarine merge)
+- [ ] inverted cursor?
+- [ ] hyprcursor magified shape
 
 If anything here sounds interesting to you, don't hesitate to contribute.
 
@@ -110,6 +112,10 @@ plugin:dynamic-cursors {
         # length in px of the simulated stick used to rotate the cursor
         # most realistic if this is your actual cursor size
         length = 20
+
+        # clockwise offset applied to the angle in degrees
+        # this will apply to ALL shapes
+        offset = 0.0
     }
 
     # for mode = tilt

src/globals.hpp

@@ -12,6 +12,7 @@
 #define CONFIG_SHAKE_EFFECTS    "plugin:dynamic-cursors:shake:effects"
 #define CONFIG_SHAKE_IPC        "plugin:dynamic-cursors:shake:ipc"
 #define CONFIG_LENGTH           "plugin:dynamic-cursors:rotate:length"
+#define CONFIG_ROTATE_OFFSET    "plugin:dynamic-cursors:rotate:offset"
 #define CONFIG_MASS             "plugin:dynamic-cursors:tilt:limit"
 #define CONFIG_FUNCTION         "plugin:dynamic-cursors:tilt:function"
 

src/main.cpp

@@ -120,6 +120,7 @@ APICALL EXPORT PLUGIN_DESCRIPTION_INFO PLUGIN_INIT(HANDLE handle) {
     HyprlandAPI::addConfigValue(PHANDLE, CONFIG_MASS, Hyprlang::INT{5000});
 
     HyprlandAPI::addConfigValue(PHANDLE, CONFIG_LENGTH, Hyprlang::INT{20});
+    HyprlandAPI::addConfigValue(PHANDLE, CONFIG_ROTATE_OFFSET, Hyprlang::FLOAT{0});
 
     HyprlandAPI::addConfigValue(PHANDLE, CONFIG_HW_DEBUG, Hyprlang::INT{0});
 

src/mode/ModeRotate.cpp

@@ -7,6 +7,7 @@ EModeUpdate CModeRotate::strategy() {
 
 double CModeRotate::update(Vector2D pos) {
     static auto* const* PLENGTH = (Hyprlang::INT* const*)HyprlandAPI::getConfigValue(PHANDLE, CONFIG_LENGTH)->getDataStaticPtr();
+    static auto* const* POFFSET = (Hyprlang::FLOAT* const*)HyprlandAPI::getConfigValue(PHANDLE, CONFIG_ROTATE_OFFSET)->getDataStaticPtr();
 
     // translate to origin
     end.x -= pos.x;
@@ -25,6 +26,7 @@ double CModeRotate::update(Vector2D pos) {
     double angle = -std::atan(end.x / end.y);
     if (end.y > 0) angle += PI;
     angle += PI;
+    angle += **POFFSET * ((2 * PI) / 360); // convert to radiants
 
     // translate back
     end.x += pos.x;