diff options
Diffstat (limited to 'source/blender/blenkernel')
-rw-r--r-- | source/blender/blenkernel/intern/fcurve.c | 180 |
1 files changed, 96 insertions, 84 deletions
diff --git a/source/blender/blenkernel/intern/fcurve.c b/source/blender/blenkernel/intern/fcurve.c index 254142fabab..251c6421d66 100644 --- a/source/blender/blenkernel/intern/fcurve.c +++ b/source/blender/blenkernel/intern/fcurve.c @@ -2354,6 +2354,98 @@ float driver_get_variable_value(ChannelDriver *driver, DriverVar *dvar) return dvar->curval; } +static void evaluate_driver_sum(ChannelDriver *driver) +{ + DriverVar *dvar; + + /* check how many variables there are first (i.e. just one?) */ + if (BLI_listbase_is_single(&driver->variables)) { + /* just one target, so just use that */ + dvar = driver->variables.first; + driver->curval = driver_get_variable_value(driver, dvar); + return; + } + + /* more than one target, so average the values of the targets */ + float value = 0.0f; + int tot = 0; + + /* loop through targets, adding (hopefully we don't get any overflow!) */ + for (dvar = driver->variables.first; dvar; dvar = dvar->next) { + value += driver_get_variable_value(driver, dvar); + tot++; + } + + /* perform operations on the total if appropriate */ + if (driver->type == DRIVER_TYPE_AVERAGE) { + driver->curval = tot ? (value / (float)tot) : 0.0f; + } + else { + driver->curval = value; + } +} + +static void evaluate_driver_min_max(ChannelDriver *driver) +{ + DriverVar *dvar; + float value = 0.0f; + + /* loop through the variables, getting the values and comparing them to existing ones */ + for (dvar = driver->variables.first; dvar; dvar = dvar->next) { + /* get value */ + float tmp_val = driver_get_variable_value(driver, dvar); + + /* store this value if appropriate */ + if (dvar->prev) { + /* check if greater/smaller than the baseline */ + if (driver->type == DRIVER_TYPE_MAX) { + /* max? */ + if (tmp_val > value) { + value = tmp_val; + } + } + else { + /* min? */ + if (tmp_val < value) { + value = tmp_val; + } + } + } + else { + /* first item - make this the baseline for comparisons */ + value = tmp_val; + } + } + + /* store value in driver */ + driver->curval = value; +} + +static void evaluate_driver_python(PathResolvedRNA *anim_rna, + ChannelDriver *driver, + ChannelDriver *driver_orig, + const float evaltime) +{ + /* check for empty or invalid expression */ + if ((driver_orig->expression[0] == '\0') || (driver_orig->flag & DRIVER_FLAG_INVALID)) { + driver->curval = 0.0f; + } + else if (!driver_try_evaluate_simple_expr(driver, driver_orig, &driver->curval, evaltime)) { +#ifdef WITH_PYTHON + /* this evaluates the expression using Python, and returns its result: + * - on errors it reports, then returns 0.0f + */ + BLI_mutex_lock(&python_driver_lock); + + driver->curval = BPY_driver_exec(anim_rna, driver, driver_orig, evaltime); + + BLI_mutex_unlock(&python_driver_lock); +#else /* WITH_PYTHON*/ + UNUSED_VARS(anim_rna, evaltime); +#endif /* WITH_PYTHON*/ + } +} + /* Evaluate an Channel-Driver to get a 'time' value to use instead of "evaltime" * - "evaltime" is the frame at which F-Curve is being evaluated * - has to return a float value @@ -2364,8 +2456,6 @@ float evaluate_driver(PathResolvedRNA *anim_rna, ChannelDriver *driver_orig, const float evaltime) { - DriverVar *dvar; - /* check if driver can be evaluated */ if (driver_orig->flag & DRIVER_FLAG_INVALID) { return 0.0f; @@ -2374,99 +2464,21 @@ float evaluate_driver(PathResolvedRNA *anim_rna, switch (driver->type) { case DRIVER_TYPE_AVERAGE: /* average values of driver targets */ case DRIVER_TYPE_SUM: /* sum values of driver targets */ - { - /* check how many variables there are first (i.e. just one?) */ - if (BLI_listbase_is_single(&driver->variables)) { - /* just one target, so just use that */ - dvar = driver->variables.first; - driver->curval = driver_get_variable_value(driver, dvar); - } - else { - /* more than one target, so average the values of the targets */ - float value = 0.0f; - int tot = 0; - - /* loop through targets, adding (hopefully we don't get any overflow!) */ - for (dvar = driver->variables.first; dvar; dvar = dvar->next) { - value += driver_get_variable_value(driver, dvar); - tot++; - } - - /* perform operations on the total if appropriate */ - if (driver->type == DRIVER_TYPE_AVERAGE) { - driver->curval = tot ? (value / (float)tot) : 0.0f; - } - else { - driver->curval = value; - } - } + evaluate_driver_sum(driver); break; - } case DRIVER_TYPE_MIN: /* smallest value */ case DRIVER_TYPE_MAX: /* largest value */ - { - float value = 0.0f; - - /* loop through the variables, getting the values and comparing them to existing ones */ - for (dvar = driver->variables.first; dvar; dvar = dvar->next) { - /* get value */ - float tmp_val = driver_get_variable_value(driver, dvar); - - /* store this value if appropriate */ - if (dvar->prev) { - /* check if greater/smaller than the baseline */ - if (driver->type == DRIVER_TYPE_MAX) { - /* max? */ - if (tmp_val > value) { - value = tmp_val; - } - } - else { - /* min? */ - if (tmp_val < value) { - value = tmp_val; - } - } - } - else { - /* first item - make this the baseline for comparisons */ - value = tmp_val; - } - } - - /* store value in driver */ - driver->curval = value; + evaluate_driver_min_max(driver); break; - } case DRIVER_TYPE_PYTHON: /* expression */ - { - /* check for empty or invalid expression */ - if ((driver_orig->expression[0] == '\0') || (driver_orig->flag & DRIVER_FLAG_INVALID)) { - driver->curval = 0.0f; - } - else if (!driver_try_evaluate_simple_expr(driver, driver_orig, &driver->curval, evaltime)) { -#ifdef WITH_PYTHON - /* this evaluates the expression using Python, and returns its result: - * - on errors it reports, then returns 0.0f - */ - BLI_mutex_lock(&python_driver_lock); - - driver->curval = BPY_driver_exec(anim_rna, driver, driver_orig, evaltime); - - BLI_mutex_unlock(&python_driver_lock); -#else /* WITH_PYTHON*/ - UNUSED_VARS(anim_rna, evaltime); -#endif /* WITH_PYTHON*/ - } + evaluate_driver_python(anim_rna, driver, driver_orig, evaltime); break; - } - default: { + default: /* special 'hack' - just use stored value * This is currently used as the mechanism which allows animated settings to be able * to be changed via the UI. */ break; - } } /* return value for driver */ |