diff options
author | Jack Andersen <someemail@gmail.com> | 2016-03-13 04:00:12 +0300 |
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committer | Antony Riakiotakis <kalast@gmail.com> | 2016-03-13 04:05:36 +0300 |
commit | 861616bf693b78b070ada6cbc6aa79eb807fdde8 (patch) | |
tree | 4626f295c739ea7fa689e4f56d6877845eb9adf1 /release | |
parent | 989b0e472e74869be9f170e2dafbae76d6a4ce94 (diff) |
Full Inverse-Quadratic-Equation Lamp Falloff
This patch adds a new `falloff_type` ('Inverse Coefficients') for Lamps in
Blender-Internal and GLSL.
The current falloff modes use a formula like this inverse-square one:
`I = E × (D^2 / (D^2 + Q × r^2))`
While such a formula is simple for 3D-artists to use, it's algebraically
cumbersome to work with. Game-designers authoring their own shaders
could benefit much more by having direct control of falloff-coefficients:
`I = E × (1.0 / (coefC + coefL × r + coefQ × r^2))`
In this mode, the `distance` parameter is unused (except for 'Sphere'
mode); instead relying on the designer to mathematically-model the
falloff-behavior.
The UI has been patched like so:
{F153843}
Reviewers: brecht, psy-fi
Reviewed By: psy-fi
Subscribers: brita_, antidote, campbellbarton, psy-fi
Differential Revision: https://developer.blender.org/D1194
Diffstat (limited to 'release')
-rw-r--r-- | release/scripts/startup/bl_ui/properties_data_lamp.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/release/scripts/startup/bl_ui/properties_data_lamp.py b/release/scripts/startup/bl_ui/properties_data_lamp.py index 0121ad46c86..30cd39d2e2f 100644 --- a/release/scripts/startup/bl_ui/properties_data_lamp.py +++ b/release/scripts/startup/bl_ui/properties_data_lamp.py @@ -103,6 +103,13 @@ class DATA_PT_lamp(DataButtonsPanel, Panel): sub.prop(lamp, "linear_attenuation", slider=True, text="Linear") sub.prop(lamp, "quadratic_attenuation", slider=True, text="Quadratic") + elif lamp.falloff_type == 'INVERSE_COEFFICIENTS': + col.label(text="Inverse Coefficients:") + sub = col.column(align=True) + sub.prop(lamp, "constant_coefficient", text="Constant") + sub.prop(lamp, "linear_coefficient", text="Linear") + sub.prop(lamp, "quadratic_coefficient", text="Quadratic") + col.prop(lamp, "use_sphere") if lamp.type == 'AREA': |