diff options
Diffstat (limited to 'modules/pdp_form.c')
| -rw-r--r-- | modules/pdp_form.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/modules/pdp_form.c b/modules/pdp_form.c index ccbd510..b3a59b3 100644 --- a/modules/pdp_form.c +++ b/modules/pdp_form.c @@ -74,6 +74,7 @@ typedef struct pdp_form_struct t_int x_nbforms; t_int x_current; t_int x_capacity; + t_float x_alpha; /* imlib data */ Imlib_Image x_image; @@ -312,6 +313,14 @@ static void pdp_form_delete(t_pdp_form *x, t_floatarg fnum ) } } +static void pdp_form_alpha(t_pdp_form *x, t_floatarg falpha ) +{ + if ( ( falpha >= 0. ) && ( falpha <= 1. ) ) + { + x->x_alpha = falpha; + } +} + static void pdp_form_resize(t_pdp_form *x, t_floatarg fnewsize ) { t_form *forms; @@ -448,11 +457,11 @@ static void pdp_form_process_yv12(t_pdp_form *x) u = yuv_RGBtoU(imdata[py*x->x_vwidth+px]); v = yuv_RGBtoV(imdata[py*x->x_vwidth+px]); - *(pY) = y<<7; + *(pY) = (y<<7)*x->x_alpha + (*pY)*(1-x->x_alpha); if ( (px%2==0) && (py%2==0) ) { - *(pV) = (v-128)<<8; - *(pU) = (u-128)<<8; + *(pV) = ((v-128)<<8)*x->x_alpha + (*pV)*(1-x->x_alpha); + *(pU) = ((u-128)<<8)*x->x_alpha + (*pU)*(1-x->x_alpha); } } pY++; @@ -549,6 +558,7 @@ void *pdp_form_new(void) inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("r")); inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("g")); inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("b")); + inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("alpha")); x->x_outlet0 = outlet_new(&x->x_obj, &s_anything); x->x_packet0 = -1; @@ -567,6 +577,7 @@ void *pdp_form_new(void) x->x_nbforms = 0; x->x_current = -1; + x->x_alpha = 1.; return (void *)x; } @@ -601,6 +612,7 @@ void pdp_form_setup(void) class_addmethod(pdp_form_class, (t_method)pdp_form_clear, gensym("clear"), A_NULL); class_addmethod(pdp_form_class, (t_method)pdp_form_delete, gensym("delete"), A_DEFFLOAT, A_NULL); class_addmethod(pdp_form_class, (t_method)pdp_form_resize, gensym("resize"), A_DEFFLOAT, A_NULL); + class_addmethod(pdp_form_class, (t_method)pdp_form_alpha, gensym("alpha"), A_DEFFLOAT, A_NULL); class_sethelpsymbol( pdp_form_class, gensym("pdp_form.pd") ); } |