LaGUI/la_animation.c

/*
* LaGUI: A graphical application framework.
* Copyright (C) 2022-2023 Wu Yiming
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/

#include "la_5.h"

extern LA MAIN;

int la_GetKeyablePropertyStorageSize(laProp* p);

laAction* laNewAction(char* Name){
    laAction* aa=memAcquire(sizeof(laAction));
    if(!Name || !Name[0]){ Name="New Action"; }
    strSafeSet(&aa->Name,Name);
    aa->Length=5; aa->FrameCount=120;
    lstAppendItem(&MAIN.Actions,aa);
    laNotifyUsers("la.actions");
    return aa;
}
laAnimationChannel* laAnimationEnsureChannel(laAction* aa, void* hyper1, laProp* p){
    laAnimationChannel* acf=0;
    int DataSize=la_GetKeyablePropertyStorageSize(p); if(!DataSize) return 0;
    for(laAnimationChannel* ac=aa->Channels.pFirst;ac;ac=ac->Item.pNext){
        if(ac->For==hyper1 && ac->Prop==p){ acf=ac; break; }
    }
    if(acf) return acf;
    acf=memAcquire(sizeof(laAnimationChannel));
    memAssignRef(acf,&acf->For,hyper1); acf->Prop=p;
    acf->DataSize = DataSize;
    lstAppendItem(&aa->Channels,acf);
    return acf;
}
laAnimationChannel* laAnimationEnsureFrame(laAnimationChannel* ac, int frame){
    laAnimationKey* akf=0,*beforeakf=0;
    for(laAnimationKey* ak=ac->Keys.pFirst;ak;ak=ak->Item.pNext){
        if(ak->At==frame){ akf=ak; break; } if(ak->At>frame){ beforeakf=ak; break; }
    }
    if(!akf){
        akf=memAcquireSimple(sizeof(laAnimationKey)-sizeof(uint64_t)+ac->DataSize);
        akf->At=frame;
        if(beforeakf){ lstInsertItemBefore(&ac->Keys, akf, beforeakf); }
        lstAppendItem(&ac->Keys, akf);
    }
    return akf;
}
void laAnimationStoreKeyValue(laAnimationChannel* ac, laAnimationKey* ak){
    laPropPack PP={0}; laPropStep PS={0};
    PS.p=ac->Prop; PS.Type='.'; PS.UseInstance=ac->For; PP.LastPs=&PS; PP.EndInstance=ac->For;
    switch(ac->Prop->PropertyType){
    case LA_PROP_INT: case LA_PROP_INT | LA_PROP_ARRAY:     laGetIntArray(&PP,(int*)&ak->Data);
    case LA_PROP_FLOAT: case LA_PROP_FLOAT | LA_PROP_ARRAY: laGetFloatArray(&PP,(real*)&ak->Data);
    case LA_PROP_ENUM: case LA_PROP_ENUM | LA_PROP_ARRAY:   laGetEnumArray(&PP,(laEnumItem**)&ak->Data);
    case LA_PROP_SUB: case LA_PROP_OPERATOR: case LA_PROP_STRING: case LA_PROP_RAW: default: return;
    }
}
laAnimationKey* laAnimationInsertKeyFrame(laAction* aa, void* hyper1, laProp* p){
    laAnimationChannel* ac=laAnimationEnsureChannel(aa,hyper1,p); if(!ac || !ac->For) return;
    int frame=aa->PlayHead/aa->Length*aa->FrameCount;
    laAnimationKey* ak=laAnimationEnsureFrame(ac->DataSize,frame);
    laAnimationStoreKeyValue(ac,ak);
}

int OPINV_NewAction(laOperator *a, laEvent *e){
    laNewAction(0);
    return LA_FINISHED;
}

void la_RegisterAnimationResources(){
    laPropContainer *pc; laProp *p; laOperatorType *at; laEnumProp *ep;
    laCreateOperatorType("LA_new_action", "New Action", "Add a new action",0,0,0,OPINV_NewAction,0,0,0);
}