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Sculpt IPMask: First version of contrast filter

This commit is contained in:
Pablo Dobarro 2021-02-26 22:03:48 +01:00
parent 5cfe7bf72c
commit 930a9edc1e
1 changed files with 31 additions and 0 deletions
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31
source/blender/editors/sculpt_paint/sculpt_filter_mask.c
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@ -439,6 +439,33 @@ static float sculpt_ipmask_vertex_softer_cb(SculptSession *UNUSED(ss),
return clamp_f(current_mask[vertex] -= current_mask[vertex] * SCULPT_IPMASK_FILTER_HARDER_SOFTER_STEP, 0.0f, 1.0f);
}
/* Contrast Increase/Decrease callbacks. */
#define SCULPT_IPMASK_FILTER_CONTRAST_STEP 0.01f
static float sculpt_ipmask_filter_contrast(const float mask, const float contrast) {
float offset;
float delta = contrast / 2.0f;
float gain = 1.0f - delta * 2.0f;
if (contrast > 0.0f) {
gain = 1.0f / ((gain != 0.0f) ? gain : FLT_EPSILON);
offset = gain * (-delta);
}
else {
delta *= -1.0f;
offset = gain * (delta);
}
return clamp_f(gain * mask + offset, 0.0f, 1.0f);
}
static float sculpt_ipmask_vertex_contrast_increase_cb(SculptSession *UNUSED(ss), const int vertex, float *current_mask) {
return sculpt_ipmask_filter_contrast(current_mask[vertex], SCULPT_IPMASK_FILTER_CONTRAST_STEP);
}
static float sculpt_ipmask_vertex_contrast_decrease_cb(SculptSession *UNUSED(ss), const int vertex, float *current_mask) {
return sculpt_ipmask_filter_contrast(current_mask[vertex], -1.0f * SCULPT_IPMASK_FILTER_CONTRAST_STEP);
}
static MaskFilterDeltaStep *sculpt_ipmask_filter_delta_create(const float *current_mask,
const float *next_mask,
const int totvert)
@ -748,6 +775,10 @@ static int sculpt_ipmask_filter_invoke(bContext *C, wmOperator *op, const wmEven
filter_cache->mask_filter_step_forward = sculpt_ipmask_vertex_harder_cb;
filter_cache->mask_filter_step_backward = sculpt_ipmask_vertex_softer_cb;
break;
case IPMASK_FILTER_CONTRAST:
filter_cache->mask_filter_step_forward = sculpt_ipmask_vertex_contrast_increase_cb;
filter_cache->mask_filter_step_backward = sculpt_ipmask_vertex_contrast_decrease_cb;
break;
}
WM_event_add_modal_handler(C, op);