Improve easing inspector usability

- Add `positive_only` property hint to disallow using negative presets.
  These values are clamped in several places in the editor already,
  so this avoids displaying presets that don't work.
- Move the Zero preset at the end of the positive list to match
  the custom property editor. It's also used less often than Linear,
  Ease In and Ease Out.
- Rename presets to be consistent between the easing property editor
  and custom property editor.
- Remove unused `inout` hint which was redundant since it was already
  the default.

1 files changed, 4 insertions, 4 deletions

diff --git a/scene/resources/environment.cpp b/scene/resources/environment.cpp
index a8d4903dad..95b0f9e6c0 100644
--- a/scene/resources/environment.cpp
+++ b/scene/resources/environment.cpp
@@ -1249,8 +1249,8 @@ void Environment::_bind_methods() {
 	ADD_GROUP("SSR", "ssr_");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "ssr_enabled"), "set_ssr_enabled", "is_ssr_enabled");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "ssr_max_steps", PROPERTY_HINT_RANGE, "1,512,1"), "set_ssr_max_steps", "get_ssr_max_steps");
-	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssr_fade_in", PROPERTY_HINT_EXP_EASING), "set_ssr_fade_in", "get_ssr_fade_in");
-	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssr_fade_out", PROPERTY_HINT_EXP_EASING), "set_ssr_fade_out", "get_ssr_fade_out");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssr_fade_in", PROPERTY_HINT_EXP_EASING, "positive_only"), "set_ssr_fade_in", "get_ssr_fade_in");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssr_fade_out", PROPERTY_HINT_EXP_EASING, "positive_only"), "set_ssr_fade_out", "get_ssr_fade_out");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssr_depth_tolerance", PROPERTY_HINT_RANGE, "0.01,128,0.1"), "set_ssr_depth_tolerance", "get_ssr_depth_tolerance");
 
 	// SSAO
@@ -1277,7 +1277,7 @@ void Environment::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "ssao_enabled"), "set_ssao_enabled", "is_ssao_enabled");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssao_radius", PROPERTY_HINT_RANGE, "0.01,16,0.01,or_greater"), "set_ssao_radius", "get_ssao_radius");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssao_intensity", PROPERTY_HINT_RANGE, "0,16,0.01,or_greater"), "set_ssao_intensity", "get_ssao_intensity");
-	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssao_power", PROPERTY_HINT_EXP_EASING), "set_ssao_power", "get_ssao_power");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssao_power", PROPERTY_HINT_EXP_EASING, "positive_only"), "set_ssao_power", "get_ssao_power");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssao_detail", PROPERTY_HINT_RANGE, "0,5,0.01"), "set_ssao_detail", "get_ssao_detail");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssao_horizon", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_ssao_horizon", "get_ssao_horizon");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "ssao_sharpness", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_ssao_sharpness", "get_ssao_sharpness");
@@ -1462,7 +1462,7 @@ void Environment::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "volumetric_fog_gi_inject", PROPERTY_HINT_RANGE, "0.0,16,0.01,exp"), "set_volumetric_fog_gi_inject", "get_volumetric_fog_gi_inject");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "volumetric_fog_anisotropy", PROPERTY_HINT_RANGE, "-0.9,0.9,0.01"), "set_volumetric_fog_anisotropy", "get_volumetric_fog_anisotropy");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "volumetric_fog_length", PROPERTY_HINT_RANGE, "0,1024,0.01,or_greater"), "set_volumetric_fog_length", "get_volumetric_fog_length");
-	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "volumetric_fog_detail_spread", PROPERTY_HINT_EXP_EASING), "set_volumetric_fog_detail_spread", "get_volumetric_fog_detail_spread");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "volumetric_fog_detail_spread", PROPERTY_HINT_EXP_EASING, "positive_only"), "set_volumetric_fog_detail_spread", "get_volumetric_fog_detail_spread");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "volumetric_fog_ambient_inject", PROPERTY_HINT_RANGE, "0.0,16,0.01,exp"), "set_volumetric_fog_ambient_inject", "get_volumetric_fog_ambient_inject");
 	ADD_SUBGROUP("Temporal Reprojection", "volumetric_fog_temporal_reprojection_");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "volumetric_fog_temporal_reprojection_enabled"), "set_volumetric_fog_temporal_reprojection_enabled", "is_volumetric_fog_temporal_reprojection_enabled");