static bool FindItemAtPos(obs_scene_t scene, obs_sceneitem_t item, void *param)
{
SceneFindData *data = reinterpret_cast<SceneFindData*>(param);
matrix4 transform;
vec3 transformedPos;
vec3 pos3;
vec3_set(&pos3, data->pos.x, data->pos.y, 0.0f);
obs_sceneitem_get_box_transform(item, &transform);
matrix4_inv(&transform, &transform);
vec3_transform(&transformedPos, &pos3, &transform);
if (transformedPos.x >= 0.0f && transformedPos.x <= 1.0f &&
transformedPos.y >= 0.0f && transformedPos.y <= 1.0f) {
if (data->selectBelow && obs_sceneitem_selected(item)) {
if (data->item)
return false;
else
data->selectBelow = false;
}
data->item = item;
}
UNUSED_PARAMETER(scene);
return true;
}
static bool AddItemBounds(obs_scene_t scene, obs_sceneitem_t item,
void *param)
{
SelectedItemBounds *data = reinterpret_cast<SelectedItemBounds*>(param);
if (!obs_sceneitem_selected(item))
return true;
matrix4 boxTransform;
obs_sceneitem_get_box_transform(item, &boxTransform);
vec3 t[4] = {
GetTransformedPos(0.0f, 0.0f, boxTransform),
GetTransformedPos(1.0f, 0.0f, boxTransform),
GetTransformedPos(0.0f, 1.0f, boxTransform),
GetTransformedPos(1.0f, 1.0f, boxTransform)
};
for (const vec3 &v : t) {
if (data->first) {
vec3_copy(&data->tl, &v);
vec3_copy(&data->br, &v);
data->first = false;
} else {
vec3_min(&data->tl, &data->tl, &v);
vec3_max(&data->br, &data->br, &v);
}
}
UNUSED_PARAMETER(scene);
return true;
}
void OBSBasicPreview::DoCtrlSelect(const vec2 &pos)
{
OBSSceneItem item = GetItemAtPos(pos, false);
if (!item)
return;
bool selected = obs_sceneitem_selected(item);
obs_sceneitem_select(item, !selected);
}
static bool move_items(obs_scene_t scene, obs_sceneitem_t item, void *param)
{
vec2 *offset = reinterpret_cast<vec2*>(param);
if (obs_sceneitem_selected(item)) {
vec2 pos;
obs_sceneitem_getpos(item, &pos);
vec2_add(&pos, &pos, offset);
obs_sceneitem_setpos(item, &pos);
}
UNUSED_PARAMETER(scene);
return true;
}
static OBSSceneItem FindASelectedItem(OBSScene scene)
{
auto func = [] (obs_scene_t *scene, obs_sceneitem_t *item, void *param)
{
OBSSceneItem &dst = *reinterpret_cast<OBSSceneItem*>(param);
if (obs_sceneitem_selected(item)) {
dst = item;
return false;
}
UNUSED_PARAMETER(scene);
return true;
};
OBSSceneItem item;
obs_scene_enum_items(scene, func, &item);
return item;
}
static bool FindHandleAtPos(obs_scene_t scene, obs_sceneitem_t item,
void *param)
{
if (!obs_sceneitem_selected(item))
return true;
HandleFindData *data = reinterpret_cast<HandleFindData*>(param);
matrix4 transform;
vec3 pos3;
float closestHandle = HANDLE_SEL_RADIUS;
vec3_set(&pos3, data->pos.x, data->pos.y, 0.0f);
obs_sceneitem_get_box_transform(item, &transform);
auto TestHandle = [&] (float x, float y, ItemHandle handle)
{
vec3 handlePos = GetTransformedPosScaled(x, y, transform,
data->scale);
float dist = vec3_dist(&handlePos, &pos3);
if (dist < HANDLE_SEL_RADIUS) {
if (dist < closestHandle) {
closestHandle = dist;
data->handle = handle;
data->item = item;
}
}
};
TestHandle(0.0f, 0.0f, ItemHandle::TopLeft);
TestHandle(0.5f, 0.0f, ItemHandle::TopCenter);
TestHandle(1.0f, 0.0f, ItemHandle::TopRight);
TestHandle(0.0f, 0.5f, ItemHandle::CenterLeft);
TestHandle(1.0f, 0.5f, ItemHandle::CenterRight);
TestHandle(0.0f, 1.0f, ItemHandle::BottomLeft);
TestHandle(0.5f, 1.0f, ItemHandle::BottomCenter);
TestHandle(1.0f, 1.0f, ItemHandle::BottomRight);
UNUSED_PARAMETER(scene);
return true;
}
bool OBSBasicPreview::DrawSelectedItem(obs_scene_t scene, obs_sceneitem_t item,
void *param)
{
if (!obs_sceneitem_selected(item))
return true;
OBSBasic *main = reinterpret_cast<OBSBasic*>(App()->GetMainWindow());
gs_load_vertexbuffer(main->circle);
matrix4 boxTransform;
obs_sceneitem_get_box_transform(item, &boxTransform);
gs_matrix_push();
gs_matrix_scale3f(HANDLE_RADIUS, HANDLE_RADIUS, 1.0f);
DrawCircleAtPos(0.0f, 0.0f, boxTransform, main->previewScale);
DrawCircleAtPos(0.0f, 1.0f, boxTransform, main->previewScale);
DrawCircleAtPos(1.0f, 0.0f, boxTransform, main->previewScale);
DrawCircleAtPos(1.0f, 1.0f, boxTransform, main->previewScale);
DrawCircleAtPos(0.5f, 0.0f, boxTransform, main->previewScale);
DrawCircleAtPos(0.0f, 0.5f, boxTransform, main->previewScale);
DrawCircleAtPos(0.5f, 1.0f, boxTransform, main->previewScale);
DrawCircleAtPos(1.0f, 0.5f, boxTransform, main->previewScale);
gs_matrix_pop();
gs_load_vertexbuffer(main->box);
gs_matrix_push();
gs_matrix_set(&boxTransform);
gs_matrix_scale3f(main->previewScale, main->previewScale, 1.0f);
gs_draw(GS_LINESTRIP, 0, 0);
gs_matrix_pop();
UNUSED_PARAMETER(scene);
UNUSED_PARAMETER(param);
return true;
}