diff options
Diffstat (limited to 'positive.c')
-rwxr-xr-x | positive.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/positive.c b/positive.c new file mode 100755 index 0000000..5d00fa4 --- /dev/null +++ b/positive.c @@ -0,0 +1,74 @@ +/* + * positive - wraps floats back into positive numbers from negative + * Copyright (c) 2005, Dr Edward Kelly <morph_2016@yahoo.co.uk> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, this list + * of conditions and the following disclaimer in the documentation and/or other materials + * + * provided with the distribution. + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "m_pd.h" + +t_class *positive_class; + +typedef struct _positive +{ + t_object x_obj; + t_float value; + t_outlet *positive; +} t_positive; + +void positive_float(t_positive *y, t_floatarg f) +{ + y->value = f; + if(y->value < 0) + { + int i = (int)y->value; + i = i * -1 + 1; + y->value += (float)i; + } + outlet_float(y->positive, y->value); +} + +void positive_bang(t_positive *y) +{ + outlet_float(y->positive, y->value); +} + +void *positive_new(t_floatarg f) +{ + t_positive *y = (t_positive *)pd_new(positive_class); + y->value = f; + y->positive = outlet_new(&y->x_obj, gensym("float")); + return(void *)y; +} + +void positive_setup(void) +{ + positive_class = class_new(gensym("positive"), + (t_newmethod)positive_new, + 0, sizeof(t_positive), + 0, A_DEFFLOAT, 0); + post("positive always returns a positive value"); + post("negative values are shifted up"); + + class_addbang(positive_class, positive_bang); + class_addfloat(positive_class, positive_float); +} |