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/**
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Contributor(s): Blender Foundation (2009), Joshua Leung
*
* ***** END GPL LICENSE BLOCK *****
*/
#include <stdlib.h>
#include "RNA_define.h"
#include "RNA_types.h"
#include "rna_internal.h"
#include "DNA_anim_types.h"
#include "DNA_action_types.h"
#include "DNA_scene_types.h"
#include "MEM_guardedalloc.h"
#ifdef RNA_RUNTIME
#include <stdio.h>
#include <math.h>
/* needed for some of the validation stuff... */
#include "BKE_animsys.h"
#include "BKE_nla.h"
/* temp constant defined for these funcs only... */
#define NLASTRIP_MIN_LEN_THRESH 0.1f
static void rna_NlaStrip_name_set(PointerRNA *ptr, const char *value)
{
NlaStrip *data= (NlaStrip *)ptr->data;
/* copy the name first */
BLI_strncpy(data->name, value, sizeof(data->name));
/* validate if there's enough info to do so */
if (ptr->id.data) {
AnimData *adt= BKE_animdata_from_id(ptr->id.data);
BKE_nlastrip_validate_name(adt, data);
}
}
static char *rna_NlaStrip_path(PointerRNA *ptr)
{
NlaStrip *strip= (NlaStrip *)ptr->data;
AnimData *adt= BKE_animdata_from_id(ptr->id.data);
/* if we're attached to AnimData, try to resolve path back to AnimData */
if (adt) {
NlaTrack *nlt;
NlaStrip *nls;
for (nlt= adt->nla_tracks.first; nlt; nlt= nlt->next) {
for (nls = nlt->strips.first; nls; nls = nls->next) {
if (nls == strip) {
// XXX but if we animate like this, the control will never work...
return BLI_sprintfN("animation_data.nla_tracks[\"%s\"].strips[\"%s\"]", nlt->name, strip->name);
}
}
}
}
/* no path */
return "";
}
static void rna_NlaStrip_transform_update(Main *bmain, Scene *scene, PointerRNA *ptr)
{
NlaStrip *strip= (NlaStrip*)ptr->data;
BKE_nlameta_flush_transforms(strip);
}
static void rna_NlaStrip_start_frame_set(PointerRNA *ptr, float value)
{
NlaStrip *data= (NlaStrip*)ptr->data;
/* clamp value to lie within valid limits
* - cannot start past the end of the strip + some flexibility threshold
* - cannot start before the previous strip (if present) ends
* -> but if it was a transition, we could go up to the start of the strip + some flexibility threshold
* as long as we re-adjust the transition afterwards
* - minimum frame is -MAXFRAME so that we don't get clipping on frame 0
*/
if (data->prev) {
if (data->prev->type == NLASTRIP_TYPE_TRANSITION) {
CLAMP(value, data->prev->start+NLASTRIP_MIN_LEN_THRESH, data->end-NLASTRIP_MIN_LEN_THRESH);
/* readjust the transition to stick to the endpoints of the action-clips */
data->prev->end= value;
}
else {
CLAMP(value, data->prev->end, data->end-NLASTRIP_MIN_LEN_THRESH);
}
}
else {
CLAMP(value, MINAFRAME, data->end);
}
data->start= value;
}
static void rna_NlaStrip_end_frame_set(PointerRNA *ptr, float value)
{
NlaStrip *data= (NlaStrip*)ptr->data;
/* clamp value to lie within valid limits
* - must not have zero or negative length strip, so cannot start before the first frame
* + some minimum-strip-length threshold
* - cannot end later than the start of the next strip (if present)
* -> but if it was a transition, we could go up to the start of the end - some flexibility threshold
* as long as we re-adjust the transition afterwards
*/
if (data->next) {
if (data->next->type == NLASTRIP_TYPE_TRANSITION) {
CLAMP(value, data->start+NLASTRIP_MIN_LEN_THRESH, data->next->end-NLASTRIP_MIN_LEN_THRESH);
/* readjust the transition to stick to the endpoints of the action-clips */
data->next->start= value;
}
else {
CLAMP(value, data->start+NLASTRIP_MIN_LEN_THRESH, data->next->start);
}
}
else {
CLAMP(value, data->start+NLASTRIP_MIN_LEN_THRESH, MAXFRAME);
}
data->end= value;
/* calculate the lengths the strip and its action (if applicable) */
if (data->type == NLASTRIP_TYPE_CLIP) {
float len, actlen;
len= data->end - data->start;
actlen= data->actend - data->actstart;
if (IS_EQ(actlen, 0.0f)) actlen= 1.0f;
/* now, adjust the 'scale' setting to reflect this (so that this change can be valid) */
data->scale= len / ((actlen) * data->repeat);
}
}
static void rna_NlaStrip_scale_set(PointerRNA *ptr, float value)
{
NlaStrip *data= (NlaStrip*)ptr->data;
float actlen, mapping;
/* set scale value */
CLAMP(value, 0.0001f, 1000.0f); /* NOTE: these need to be synced with the values in the property definition in rna_def_nlastrip() */
data->scale= value;
/* calculate existing factors */
actlen= data->actend - data->actstart;
if (IS_EQ(actlen, 0.0f)) actlen= 1.0f;
mapping= data->scale * data->repeat;
/* adjust endpoint of strip in response to this */
if (IS_EQ(mapping, 0.0f) == 0)
data->end = (actlen * mapping) + data->start;
else
printf("NlaStrip Set Scale Error (in RNA): Scale = %0.4f, Repeat = %0.4f \n", data->scale, data->repeat);
}
static void rna_NlaStrip_repeat_set(PointerRNA *ptr, float value)
{
NlaStrip *data= (NlaStrip*)ptr->data;
float actlen, mapping;
/* set repeat value */
CLAMP(value, 0.01f, 1000.0f); /* NOTE: these need to be synced with the values in the property definition in rna_def_nlastrip() */
data->repeat= value;
/* calculate existing factors */
actlen= data->actend - data->actstart;
if (IS_EQ(actlen, 0.0f)) actlen= 1.0f;
mapping= data->scale * data->repeat;
/* adjust endpoint of strip in response to this */
if (IS_EQ(mapping, 0.0f) == 0)
data->end = (actlen * mapping) + data->start;
else
printf("NlaStrip Set Repeat Error (in RNA): Scale = %0.4f, Repeat = %0.4f \n", data->scale, data->repeat);
}
static void rna_NlaStrip_blend_in_set(PointerRNA *ptr, float value)
{
NlaStrip *data= (NlaStrip*)ptr->data;
float len;
/* blend-in is limited to the length of the strip, and also cannot overlap with blendout */
len= (data->end - data->start) - data->blendout;
CLAMP(value, 0, len);
data->blendin= value;
}
static void rna_NlaStrip_blend_out_set(PointerRNA *ptr, float value)
{
NlaStrip *data= (NlaStrip*)ptr->data;
float len;
/* blend-out is limited to the length of the strip */
len= (data->end - data->start);
CLAMP(value, 0, len);
/* it also cannot overlap with blendin */
if ((len - value) < data->blendin)
value= len - data->blendin;
data->blendout= value;
}
static void rna_NlaStrip_action_start_frame_set(PointerRNA *ptr, float value)
{
NlaStrip *data= (NlaStrip*)ptr->data;
float actlen, mapping;
/* prevent start frame from occurring after end of action */
CLAMP(value, MINAFRAME, data->actend);
data->actstart= value;
/* calculate new length factors */
actlen= data->actend - data->actstart;
if (IS_EQ(actlen, 0.0f)) actlen= 1.0f;
mapping= data->scale * data->repeat;
/* adjust endpoint of strip in response to this */
// FIXME: should we be moving the start backwards instead?
if (IS_EQ(mapping, 0.0f) == 0)
data->end = (actlen * mapping) + data->start;
}
static void rna_NlaStrip_action_end_frame_set(PointerRNA *ptr, float value)
{
NlaStrip *data= (NlaStrip*)ptr->data;
float actlen, mapping;
/* prevent end frame from starting before start of action */
CLAMP(value, data->actstart, MAXFRAME);
data->actend= value;
/* calculate new length factors */
actlen= data->actend - data->actstart;
if (IS_EQ(actlen, 0.0f)) actlen= 1.0f;
mapping= data->scale * data->repeat;
/* adjust endpoint of strip in response to this */
if (IS_EQ(mapping, 0.0f) == 0)
data->end = (actlen * mapping) + data->start;
}
static void rna_NlaStrip_animated_influence_set(PointerRNA *ptr, int value)
{
NlaStrip *data= (NlaStrip*)ptr->data;
if (value) {
/* set the flag, then make sure a curve for this exists */
data->flag |= NLASTRIP_FLAG_USR_INFLUENCE;
BKE_nlastrip_validate_fcurves(data);
}
else
data->flag &= ~NLASTRIP_FLAG_USR_INFLUENCE;
}
static void rna_NlaStrip_animated_time_set(PointerRNA *ptr, int value)
{
NlaStrip *data= (NlaStrip*)ptr->data;
if (value) {
/* set the flag, then make sure a curve for this exists */
data->flag |= NLASTRIP_FLAG_USR_TIME;
BKE_nlastrip_validate_fcurves(data);
}
else
data->flag &= ~NLASTRIP_FLAG_USR_TIME;
}
#else
/* enum defines exported for rna_animation.c */
EnumPropertyItem nla_mode_blend_items[] = {
{NLASTRIP_MODE_REPLACE, "REPLACE", 0, "Replace", "Result strip replaces the accumulated results by amount specified by influence."},
{NLASTRIP_MODE_ADD, "ADD", 0, "Add", "Weighted result of strip is added to the accumlated results."},
{NLASTRIP_MODE_SUBTRACT, "SUBTRACT", 0, "Subtract", "Weighted result of strip is removed from the accumlated results."},
{NLASTRIP_MODE_MULTIPLY, "MULITPLY", 0, "Multiply", "Weighted result of strip is multiplied with the accumlated results."},
{0, NULL, 0, NULL, NULL}};
EnumPropertyItem nla_mode_extend_items[] = {
{NLASTRIP_EXTEND_NOTHING, "NOTHING", 0, "Nothing", "Strip has no influence past its extents."},
{NLASTRIP_EXTEND_HOLD, "HOLD", 0, "Hold", "Hold the first frame if no previous strips in track, and always hold last frame."},
{NLASTRIP_EXTEND_HOLD_FORWARD, "HOLD_FORWARD", 0, "Hold Forward", "Only hold last frame."},
{0, NULL, 0, NULL, NULL}};
static void rna_def_nlastrip(BlenderRNA *brna)
{
StructRNA *srna;
PropertyRNA *prop;
/* enum defs */
static EnumPropertyItem prop_type_items[] = {
{NLASTRIP_TYPE_CLIP, "CLIP", 0, "Action Clip", "NLA Strip references some Action."},
{NLASTRIP_TYPE_TRANSITION, "TRANSITION", 0, "Transition", "NLA Strip 'transitions' between adjacent strips."},
{NLASTRIP_TYPE_META, "META", 0, "Meta", "NLA Strip acts as a container for adjacent strips."},
{0, NULL, 0, NULL, NULL}};
/* struct definition */
srna= RNA_def_struct(brna, "NlaStrip", NULL);
RNA_def_struct_ui_text(srna, "NLA Strip", "A container referencing an existing Action.");
RNA_def_struct_path_func(srna, "rna_NlaStrip_path");
RNA_def_struct_ui_icon(srna, ICON_NLA); // XXX
/* name property */
prop= RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
RNA_def_property_ui_text(prop, "Name", "");
RNA_def_property_string_funcs(prop, NULL, NULL, "rna_NlaStrip_name_set");
RNA_def_struct_name_property(srna, prop);
/* Enums */
prop= RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
RNA_def_property_enum_sdna(prop, NULL, "type");
RNA_def_property_clear_flag(prop, PROP_EDITABLE); // XXX for now, not editable, since this is dangerous
RNA_def_property_enum_items(prop, prop_type_items);
RNA_def_property_ui_text(prop, "Type", "Type of NLA Strip.");
prop= RNA_def_property(srna, "extrapolation", PROP_ENUM, PROP_NONE);
RNA_def_property_enum_sdna(prop, NULL, "extendmode");
RNA_def_property_enum_items(prop, nla_mode_extend_items);
RNA_def_property_ui_text(prop, "Extrapolation", "Action to take for gaps past the strip extents.");
prop= RNA_def_property(srna, "blending", PROP_ENUM, PROP_NONE);
RNA_def_property_enum_sdna(prop, NULL, "blendmode");
RNA_def_property_enum_items(prop, nla_mode_blend_items);
RNA_def_property_ui_text(prop, "Blending", "Method used for combining strip's result with accumulated result.");
/* Strip extents */
prop= RNA_def_property(srna, "start_frame", PROP_FLOAT, PROP_TIME);
RNA_def_property_float_sdna(prop, NULL, "start");
RNA_def_property_float_funcs(prop, NULL, "rna_NlaStrip_start_frame_set", NULL);
RNA_def_property_ui_text(prop, "Start Frame", "");
RNA_def_property_update(prop, 0, "rna_NlaStrip_transform_update");
prop= RNA_def_property(srna, "end_frame", PROP_FLOAT, PROP_TIME);
RNA_def_property_float_sdna(prop, NULL, "end");
RNA_def_property_float_funcs(prop, NULL, "rna_NlaStrip_end_frame_set", NULL);
RNA_def_property_ui_text(prop, "End Frame", "");
RNA_def_property_update(prop, 0, "rna_NlaStrip_transform_update");
/* Blending */
prop= RNA_def_property(srna, "blend_in", PROP_FLOAT, PROP_NONE);
RNA_def_property_float_sdna(prop, NULL, "blendin");
RNA_def_property_float_funcs(prop, NULL, "rna_NlaStrip_blend_in_set", NULL);
RNA_def_property_ui_text(prop, "Blend In", "Number of frames at start of strip to fade in influence.");
prop= RNA_def_property(srna, "blend_out", PROP_FLOAT, PROP_NONE);
RNA_def_property_float_sdna(prop, NULL, "blendout");
RNA_def_property_float_funcs(prop, NULL, "rna_NlaStrip_blend_out_set", NULL);
RNA_def_property_ui_text(prop, "Blend Out", "");
prop= RNA_def_property(srna, "auto_blending", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLASTRIP_FLAG_AUTO_BLENDS);
RNA_def_property_ui_text(prop, "Auto Blend In/Out", "Number of frames for Blending In/Out is automatically determined from overlapping strips.");
/* Action */
prop= RNA_def_property(srna, "action", PROP_POINTER, PROP_NONE);
RNA_def_property_pointer_sdna(prop, NULL, "act");
RNA_def_property_flag(prop, PROP_EDITABLE);
RNA_def_property_ui_text(prop, "Action", "Action referenced by this strip.");
/* Action extents */
prop= RNA_def_property(srna, "action_start_frame", PROP_FLOAT, PROP_TIME);
RNA_def_property_float_sdna(prop, NULL, "actstart");
RNA_def_property_float_funcs(prop, NULL, "rna_NlaStrip_action_start_frame_set", NULL);
RNA_def_property_ui_text(prop, "Action Start Frame", "");
prop= RNA_def_property(srna, "action_end_frame", PROP_FLOAT, PROP_TIME);
RNA_def_property_float_sdna(prop, NULL, "actend");
RNA_def_property_float_funcs(prop, NULL, "rna_NlaStrip_action_end_frame_set", NULL);
RNA_def_property_ui_text(prop, "Action End Frame", "");
/* Action Reuse */
prop= RNA_def_property(srna, "repeat", PROP_FLOAT, PROP_NONE);
RNA_def_property_float_sdna(prop, NULL, "repeat");
RNA_def_property_float_funcs(prop, NULL, "rna_NlaStrip_repeat_set", NULL);
RNA_def_property_range(prop, 0.1f, 1000.0f); /* these limits have currently be chosen arbitarily, but could be extended (minimum should still be > 0 though) if needed... */
RNA_def_property_ui_text(prop, "Repeat", "Number of times to repeat the action range.");
prop= RNA_def_property(srna, "scale", PROP_FLOAT, PROP_NONE);
RNA_def_property_float_sdna(prop, NULL, "scale");
RNA_def_property_float_funcs(prop, NULL, "rna_NlaStrip_scale_set", NULL);
RNA_def_property_range(prop, 0.0001f, 1000.0f); /* these limits can be extended, but beyond this, we can get some crazy+annoying bugs due to numeric errors */
RNA_def_property_ui_text(prop, "Scale", "Scaling factor for action.");
/* Strip's F-Curves */
prop= RNA_def_property(srna, "fcurves", PROP_COLLECTION, PROP_NONE);
RNA_def_property_struct_type(prop, "FCurve");
RNA_def_property_ui_text(prop, "F-Curves", "F-Curves for controlling the strip's influence and timing.");
/* Strip's F-Modifiers */
prop= RNA_def_property(srna, "modifiers", PROP_COLLECTION, PROP_NONE);
RNA_def_property_struct_type(prop, "FModifier");
RNA_def_property_ui_text(prop, "Modifiers", "Modifiers affecting all the F-Curves in the referenced Action.");
/* Strip's Sub-Strips (for Meta-Strips) */
prop= RNA_def_property(srna, "strips", PROP_COLLECTION, PROP_NONE);
RNA_def_property_struct_type(prop, "NlaStrip");
RNA_def_property_ui_text(prop, "NLA Strips", "NLA Strips that this strip acts as a container for (if it is of type Meta).");
/* Settings - Values necessary for evaluation */
prop= RNA_def_property(srna, "influence", PROP_FLOAT, PROP_NONE);
RNA_def_property_range(prop, 0.0f, 1.0f);
RNA_def_property_ui_text(prop, "Influence", "Amount the strip contributes to the current result.");
prop= RNA_def_property(srna, "strip_time", PROP_FLOAT, PROP_TIME);
RNA_def_property_ui_text(prop, "Strip Time", "Frame of referenced Action to evaluate.");
// TODO: should the animated_influence/time settings be animatable themselves?
prop= RNA_def_property(srna, "animated_influence", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLASTRIP_FLAG_USR_INFLUENCE);
RNA_def_property_boolean_funcs(prop, NULL, "rna_NlaStrip_animated_influence_set");
RNA_def_property_ui_text(prop, "Animated Influence", "Influence setting is controlled by an F-Curve rather than automatically determined.");
prop= RNA_def_property(srna, "animated_time", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLASTRIP_FLAG_USR_TIME);
RNA_def_property_boolean_funcs(prop, NULL, "rna_NlaStrip_animated_time_set");
RNA_def_property_ui_text(prop, "Animated Strip Time", "Strip time is controlled by an F-Curve rather than automatically determined.");
/* settings */
prop= RNA_def_property(srna, "active", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_clear_flag(prop, PROP_EDITABLE); /* can be made editable by hooking it up to the necessary NLA API methods */
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLASTRIP_FLAG_ACTIVE);
RNA_def_property_ui_text(prop, "Active", "NLA Strip is active.");
prop= RNA_def_property(srna, "selected", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLASTRIP_FLAG_SELECT);
RNA_def_property_ui_text(prop, "Selected", "NLA Strip is selected.");
prop= RNA_def_property(srna, "muted", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLASTRIP_FLAG_MUTED);
RNA_def_property_ui_text(prop, "Muted", "NLA Strip is not evaluated.");
prop= RNA_def_property(srna, "reversed", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLASTRIP_FLAG_REVERSE);
RNA_def_property_ui_text(prop, "Reversed", "NLA Strip is played back in reverse order (only when timing is automatically determined).");
// TODO:
// - sync length
}
static void rna_def_nlatrack(BlenderRNA *brna)
{
StructRNA *srna;
PropertyRNA *prop;
srna= RNA_def_struct(brna, "NlaTrack", NULL);
RNA_def_struct_ui_text(srna, "NLA Track", "A animation layer containing Actions referenced as NLA strips.");
RNA_def_struct_ui_icon(srna, ICON_NLA);
/* strips collection */
prop= RNA_def_property(srna, "strips", PROP_COLLECTION, PROP_NONE);
RNA_def_property_struct_type(prop, "NlaStrip");
RNA_def_property_ui_text(prop, "NLA Strips", "NLA Strips on this NLA-track.");
/* name property */
prop= RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
RNA_def_property_ui_text(prop, "Name", "");
RNA_def_struct_name_property(srna, prop);
/* settings */
prop= RNA_def_property(srna, "active", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_clear_flag(prop, PROP_EDITABLE); /* can be made editable by hooking it up to the necessary NLA API methods */
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLATRACK_ACTIVE);
RNA_def_property_ui_text(prop, "Active", "NLA Track is active.");
prop= RNA_def_property(srna, "solo", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_clear_flag(prop, PROP_EDITABLE); /* can be made editable by hooking it up to the necessary NLA API methods */
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLATRACK_SOLO);
RNA_def_property_ui_text(prop, "Solo", "NLA Track is evaluated itself (i.e. active Action and all other NLA Tracks in the same AnimData block are disabled).");
prop= RNA_def_property(srna, "selected", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLATRACK_SELECTED);
RNA_def_property_ui_text(prop, "Selected", "NLA Track is selected.");
prop= RNA_def_property(srna, "muted", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLATRACK_MUTED);
RNA_def_property_ui_text(prop, "Muted", "NLA Track is not evaluated.");
prop= RNA_def_property(srna, "locked", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_boolean_sdna(prop, NULL, "flag", NLATRACK_PROTECTED);
RNA_def_property_ui_text(prop, "Locked", "NLA Track is locked.");
}
/* --------- */
void RNA_def_nla(BlenderRNA *brna)
{
rna_def_nlatrack(brna);
rna_def_nlastrip(brna);
}
#endif
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