Formatting and fixes

* Moved: some existing functions into new separate files to improve code
readability (detailed in __init__.py docstring)

* Remove: max_intersections deprecated in pov 3.8

* Add: Validate utf-8 characters with specific API function at session's
first script init

* Add : Icons to some text fields and inviting labels

* Change default camera normal perturbation value to non zero since its
use is first driven by a boolean toggle

* Change: lists (vectors and indices) are now exported in one line by
default for better manual scene overview and debugging

* Change: a couple of tooltips corrections

* Change : renamed many variables and functions to snake_case according
to recommanded style guides

* Fix : Heightfield primitive (forward slashes were expected for
displacement texture path)

* Fix : Text nippet insertion operator

* Fix : added console print tip to check executable path on failure to
process

* Fix : tweaked finished render say command for Linux

* Fix : interface of some shader nodes broken since 2.8 api changes

* Fix : export hair particles

9 files changed, 18 insertions, 18 deletions

diff --git a/presets/pov/light/02_(5400K)_High_Noon_Sun.py b/presets/pov/light/02_(5400K)_High_Noon_Sun.py
index 47499b52..7b5b9e2e 100644..100755
--- a/presets/pov/light/02_(5400K)_High_Noon_Sun.py
+++ b/presets/pov/light/02_(5400K)_High_Noon_Sun.py
@@ -9,8 +9,8 @@ lampdata = bpy.context.object.data
 lampdata.shape = 'SQUARE'
 lampdata.size = 30000000#0.02
 #lampdata.size_y = 0.02
-lampdata.shadow_ray_samples_x = 2
-#lampdata.shadow_ray_samples_y = 3
+lampdata.pov.shadow_ray_samples_x = 2
+#lampdata.pov.shadow_ray_samples_y = 3
 lampdata.color = (1.0, 1.0, 1.0)
 lampdata.energy = 1.094316#91193 #lux
 lampdata.distance =695699968
diff --git a/presets/pov/light/03_(6000K)_Daylight_Window.py b/presets/pov/light/03_(6000K)_Daylight_Window.py
index a9781f57..eae7cd16 100644..100755
--- a/presets/pov/light/03_(6000K)_Daylight_Window.py
+++ b/presets/pov/light/03_(6000K)_Daylight_Window.py
@@ -6,8 +6,8 @@ lampdata = bpy.context.object.data
 
 lampdata.size = 1.2
 lampdata.size_y = 2.10
-lampdata.shadow_ray_samples_x = 2
-lampdata.shadow_ray_samples_y = 3
+lampdata.pov.shadow_ray_samples_x = 2
+lampdata.pov.shadow_ray_samples_y = 3
 lampdata.color = (1.0, 1.0, 1.0)
 lampdata.energy = 1.094316#91193 #lux
 lampdata.distance = 1.0
diff --git a/presets/pov/light/09_(5000K)_75W_Full_Spectrum_Fluorescent_T12.py b/presets/pov/light/09_(5000K)_75W_Full_Spectrum_Fluorescent_T12.py
index 78fa29cb..6d09b96f 100644..100755
--- a/presets/pov/light/09_(5000K)_75W_Full_Spectrum_Fluorescent_T12.py
+++ b/presets/pov/light/09_(5000K)_75W_Full_Spectrum_Fluorescent_T12.py
@@ -6,8 +6,8 @@ lampdata = bpy.context.object.data
 
 lampdata.size = 0.038
 lampdata.size_y = 2.40284
-lampdata.shadow_ray_samples_x = 1
-lampdata.shadow_ray_samples_y = 2
+lampdata.pov.shadow_ray_samples_x = 1
+lampdata.pov.shadow_ray_samples_y = 2
 lampdata.color = (1.0, 0.95686274766922, 0.9490200281143188)
 lampdata.energy = 4.45304#4775lm/21.446(=lux)*0.004(distance) *2 for distance is the point of half strength 6200lm?
 lampdata.distance = 1.0 #dist values multiplied by 10 for area lights for same power as bulb/spot/...
diff --git a/presets/pov/light/10_(4300K)_40W_Vintage_Fluorescent_T12.py b/presets/pov/light/10_(4300K)_40W_Vintage_Fluorescent_T12.py
index dc78bc5c..5a5a7eb9 100644..100755
--- a/presets/pov/light/10_(4300K)_40W_Vintage_Fluorescent_T12.py
+++ b/presets/pov/light/10_(4300K)_40W_Vintage_Fluorescent_T12.py
@@ -6,8 +6,8 @@ lampdata = bpy.context.object.data
 
 lampdata.size = 0.038
 lampdata.size_y = 1.2192
-lampdata.shadow_ray_samples_x = 1
-lampdata.shadow_ray_samples_y = 2
+lampdata.pov.shadow_ray_samples_x = 1
+lampdata.pov.shadow_ray_samples_y = 2
 lampdata.color = (0.901, 1.0, 0.979)
 lampdata.energy = 2.14492#2300lm/21.446(=lux)*0.004*2.5(distance) *2 for distance is the point of half strength
 lampdata.distance = 1.0 #dist values multiplied by 10 for area lights for same power as bulb/spot/...
diff --git a/presets/pov/light/11_(5000K)_18W_Standard_Fluorescent_T8.py b/presets/pov/light/11_(5000K)_18W_Standard_Fluorescent_T8.py
index a70cda3f..5f7ce0a6 100644..100755
--- a/presets/pov/light/11_(5000K)_18W_Standard_Fluorescent_T8.py
+++ b/presets/pov/light/11_(5000K)_18W_Standard_Fluorescent_T8.py
@@ -6,8 +6,8 @@ lampdata = bpy.context.object.data
 
 lampdata.size = 0.026
 lampdata.size_y = 0.59
-lampdata.shadow_ray_samples_x = 1
-lampdata.shadow_ray_samples_y = 2
+lampdata.pov.shadow_ray_samples_x = 1
+lampdata.pov.shadow_ray_samples_y = 2
 lampdata.color = (0.95686274766922, 1.0, 0.9803921580314636)
 lampdata.energy = 1.25898#1350lm/21.446(=lux)*0.004*2.5(distance) *2 for distance is the point of half strength
 lampdata.distance = 1.0 #dist values multiplied by 10 for area lights for same power as bulb/spot/...
diff --git a/presets/pov/light/12_(4200K)_18W_Cool_White_Fluorescent_T8.py b/presets/pov/light/12_(4200K)_18W_Cool_White_Fluorescent_T8.py
index c2a0d65d..0bbf1965 100644..100755
--- a/presets/pov/light/12_(4200K)_18W_Cool_White_Fluorescent_T8.py
+++ b/presets/pov/light/12_(4200K)_18W_Cool_White_Fluorescent_T8.py
@@ -7,8 +7,8 @@ lampdata = bpy.context.object.data
 
 lampdata.size = 0.026
 lampdata.size_y = 0.59
-lampdata.shadow_ray_samples_x = 1
-lampdata.shadow_ray_samples_y = 2
+lampdata.pov.shadow_ray_samples_x = 1
+lampdata.pov.shadow_ray_samples_y = 2
 lampdata.color = (0.8313725590705872, 0.9215686321258545, 1.0)
 lampdata.energy = 1.25898#1350lm/21.446(=lux)*0.004*2.5(distance) *2 for distance is the point of half strength
 lampdata.distance = 1.0 #dist values multiplied by 10 for area lights for same power as bulb/spot/...
diff --git a/presets/pov/light/13_(3000K)_18W_Warm_Fluorescent_T8.py b/presets/pov/light/13_(3000K)_18W_Warm_Fluorescent_T8.py
index e1cee557..187b26d3 100644..100755
--- a/presets/pov/light/13_(3000K)_18W_Warm_Fluorescent_T8.py
+++ b/presets/pov/light/13_(3000K)_18W_Warm_Fluorescent_T8.py
@@ -7,8 +7,8 @@ lampdata = bpy.context.object.data
 
 lampdata.size = 0.026
 lampdata.size_y = 0.59
-lampdata.shadow_ray_samples_x = 1
-lampdata.shadow_ray_samples_y = 2
+lampdata.pov.shadow_ray_samples_x = 1
+lampdata.pov.shadow_ray_samples_y = 2
 lampdata.color = (1.0, 0.95686274766922, 0.8980392217636108)
 lampdata.energy = 1.25898#1350lm/21.446(=lux)*0.004*2.5(distance) *2 for distance is the point of half strength
 lampdata.distance = 1.0 #dist values multiplied by 10 for area lights for same power as bulb/spot/...
diff --git a/presets/pov/light/14_(6500K)_54W_Grow_Light_Fluorescent_T5-HO.py b/presets/pov/light/14_(6500K)_54W_Grow_Light_Fluorescent_T5-HO.py
index 55f84ab8..c0b992ca 100644..100755
--- a/presets/pov/light/14_(6500K)_54W_Grow_Light_Fluorescent_T5-HO.py
+++ b/presets/pov/light/14_(6500K)_54W_Grow_Light_Fluorescent_T5-HO.py
@@ -6,8 +6,8 @@ lampdata = bpy.context.object.data
 
 lampdata.size = 0.016
 lampdata.size_y = 1.149
-lampdata.shadow_ray_samples_x = 1
-lampdata.shadow_ray_samples_y = 2
+lampdata.pov.shadow_ray_samples_x = 1
+lampdata.pov.shadow_ray_samples_y = 2
 lampdata.color = (1.0, 0.83, 0.986274528503418)
 lampdata.energy = 4.66287 #0.93257#4.66287#5000lm/21.446(=lux)*0.004*2.5(distance) *2 for distance is the point of half strength
 lampdata.distance = 0.1 #dist values multiplied by 10 for area lights for same power as bulb/spot/...
diff --git a/presets/pov/light/21_(2700K)_7W_OLED_Panel.py b/presets/pov/light/21_(2700K)_7W_OLED_Panel.py
index 8f2ebb8f..8a6ba8d9 100644..100755
--- a/presets/pov/light/21_(2700K)_7W_OLED_Panel.py
+++ b/presets/pov/light/21_(2700K)_7W_OLED_Panel.py
@@ -7,8 +7,8 @@ lampdata = bpy.context.object.data
 
 lampdata.size = 0.033
 lampdata.size_y = 0.133
-lampdata.shadow_ray_samples_x = 2
-lampdata.shadow_ray_samples_y = 2
+lampdata.pov.shadow_ray_samples_x = 2
+lampdata.pov.shadow_ray_samples_y = 2
 lampdata.color = (1.0, 0.8292156958580017, 0.6966666865348816)
 lampdata.energy = 0.83932#900lm/21.446(=lux)*0.004*2.5(distance) *2 for distance is the point of half strength
 lampdata.distance = 1.18 #dist values multiplied by 10 for area lights for same power as bulb/spot/...