diff options
Diffstat (limited to 'source/blender/blenkernel/intern')
-rw-r--r-- | source/blender/blenkernel/intern/brush.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/source/blender/blenkernel/intern/brush.c b/source/blender/blenkernel/intern/brush.c index 6c3c97399e4..115d31b587c 100644 --- a/source/blender/blenkernel/intern/brush.c +++ b/source/blender/blenkernel/intern/brush.c @@ -442,7 +442,7 @@ void brush_imbuf_new(Brush *brush, short flt, short texfall, int size, ImBuf **o dist = sqrt(xy[0]*xy[0] + xy[1]*xy[1]); VECCOPY(dstf, brush->rgb); - dstf[3]= brush->alpha*brush_curve_strength(brush, dist, maxsize); + dstf[3]= brush->alpha*brush_curve_strength_clamp(brush, dist, maxsize); } else if (texfall == 1) { brush_sample_tex(brush, xy, dstf); @@ -455,7 +455,7 @@ void brush_imbuf_new(Brush *brush, short flt, short texfall, int size, ImBuf **o dstf[0] = rgba[0]*brush->rgb[0]; dstf[1] = rgba[1]*brush->rgb[1]; dstf[2] = rgba[2]*brush->rgb[2]; - dstf[3] = rgba[3]*brush->alpha*brush_curve_strength(brush, dist, maxsize); + dstf[3] = rgba[3]*brush->alpha*brush_curve_strength_clamp(brush, dist, maxsize); } } } @@ -494,7 +494,7 @@ void brush_imbuf_new(Brush *brush, short flt, short texfall, int size, ImBuf **o dst[0] = FTOCHAR(rgba[0]*brush->rgb[0]); dst[1] = FTOCHAR(rgba[1]*brush->rgb[1]); dst[2] = FTOCHAR(rgba[2]*brush->rgb[2]); - dst[3] = FTOCHAR(rgba[3]*brush->alpha*brush_curve_strength(brush, dist, maxsize)); + dst[3] = FTOCHAR(rgba[3]*brush->alpha*brush_curve_strength_clamp(brush, dist, maxsize)); } } } @@ -952,12 +952,23 @@ int brush_painter_paint(BrushPainter *painter, BrushFunc func, float *pos, doubl } /* Uses the brush curve control to find a strength value between 0 and 1 */ +float brush_curve_strength_clamp(Brush *br, float p, const float len) +{ + if(p >= len) p= 1.0f; + else p= p/len; + + p= curvemapping_evaluateF(br->curve, 0, p); + if(p < 0.0) p= 0.0f; + else if(p > 1.0f) p= 1.0f; + return p; +} +/* same as above but can return negative values if the curve enables + * used for sculpt only */ float brush_curve_strength(Brush *br, float p, const float len) { - float f; - if(p > len) p= len; - f= curvemapping_evaluateF(br->curve, 0, p/len); - return (f > 0.0f) ? f:0.0f; + if(p >= len) p= 1.0f; + else p= p/len; + return curvemapping_evaluateF(br->curve, 0, p); } /* TODO: should probably be unified with BrushPainter stuff? */ @@ -1024,7 +1035,7 @@ static struct ImBuf *brush_gen_radial_control_imbuf(Brush *br) for(i=0; i<side; ++i) { for(j=0; j<side; ++j) { float magn= sqrt(pow(i - half, 2) + pow(j - half, 2)); - im->rect_float[i*side + j]= brush_curve_strength(br, magn, half); + im->rect_float[i*side + j]= brush_curve_strength_clamp(br, magn, half); } } |