Added/updated test code for mouse rotation, zooming, and panning.

src/Core.cpp

@@ -230,17 +230,33 @@ void Core::doProcess() {
       if (event.motion.which == SDL_TOUCH_MOUSEID) continue;
       LOG(LOG_INFO) << "mouse motion: " << event.motion.xrel << "x" << event.motion.yrel << " ";
       RenderCamera *camera = scene->getCamera(1);
+      if (event.motion.state & SDL_BUTTON_MMASK) {
+        camera->setYaw(camera->getYaw() - event.motion.xrel);
+      } else if (event.motion.state & SDL_BUTTON_RMASK) {
         Vec3 camera_pos = camera->getPosition();
-      float x = ((float)event.motion.x-(v_width/2)) / camera->getSize();
-      float y = ((float)event.motion.y-(v_height/2)) / camera->getSize();
-      camera->setPosition(-x, camera_pos.y, y);
+        float x = (float)event.motion.xrel / (v_width/50);
+        float y = (float)event.motion.yrel / (v_height/50);
+        // This is weird. (again)
+        float yaw = camera->getYaw() * M_PI / 180.0f;
+        float ax = (-x * cosf(yaw)) + (y * sinf(yaw));
+        float ay = (y * cosf(yaw)) - (-x * sinf(yaw));
+        camera->setPosition(camera_pos.x+ax, camera_pos.y, camera_pos.z+ay);
+      }
       camera->doRefresh();
-    } else if (event.type == SDL_MOUSEBUTTONDOWN) {
+    } else if (event.type == SDL_MOUSEWHEEL) {
       RenderCamera *camera = scene->getCamera(1);
-      if (event.button.button == SDL_BUTTON_LEFT) {
-        camera->setMode(0);
+      Vec3 camera_pos = camera->getPosition();
+      camera_pos.y -= event.wheel.y;
+      camera->setPosition(camera_pos.x, camera_pos.y, camera_pos.z);
+      camera->doRefresh();
+    } else if (event.type == SDL_KEYUP) {
+      if (event.key.keysym.sym == SDLK_SPACE) {
+        RenderCamera *camera = scene->getCamera(1);
+        if (camera->getRenderMode() == 0) {
+          camera->setRenderMode(1);
         } else {
-        camera->setMode(1);
+          camera->setRenderMode(0);
+        }
       }
     }
   }

src/RenderCamera.cpp

@@ -70,7 +70,7 @@ void RenderCamera::doRefresh() {
 }
 /* ======== Setter functions ======== */
 // sets to orthogonal or perspective rendering
-void RenderCamera::setMode(int mode) {
+void RenderCamera::setRenderMode(int mode) {
   if (mode == 1) {
     render_mode = mode;
   } else {
@@ -116,3 +116,6 @@ float RenderCamera::getSize() {
 Mat4 RenderCamera::getModelview() {
   return mv_matrix;
 }
+int RenderCamera::getRenderMode() {
+  return render_mode;
+}

src/RenderCamera.hpp

@@ -26,7 +26,8 @@ class RenderCamera {
     RenderView* getRenderView();
     void updateProjection(int width, int height);
     void doRefresh();
-    void setMode(int mode);
+    int getRenderMode();
+    void setRenderMode(int mode);
     Vec3 getPosition();
     void setPosition(float x, float y, float z);
     float getPitch();