421 lines
8.9 KiB
C++
421 lines
8.9 KiB
C++
//This highlights the 4th dimension
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//of the transformation matrix which
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//is used for storing translations (shifts)
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//in matricies so they can be combined
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//with a matrix multiplication.
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//Scroll bar works.
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//The multiplication takes place in the
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//$LK,"SpritePlotRotZ3B","MN:SpritePlotRotZ3B"$ routine.
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#define SLIDER_SPACING 20
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#define SLIDER_RANGE 30
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#define SLIDER_BORDER 2
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class CSliderState
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{
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I64 s1,s2,s3;
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F64 a1,a2,scale;
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} s;
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U0 DrawSliderCtrl(CDC *dc,CCtrl *c)
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{
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CSliderState *s=c->state;
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dc->color=LTGREEN;
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GrRect(dc, c->left,c->top,SLIDER_SPACING*4+3,SLIDER_SPACING*2+SLIDER_RANGE);
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dc->color=BROWN;
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GrRect(dc, c->left+SLIDER_BORDER,c->top+SLIDER_BORDER,
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SLIDER_SPACING*4+3-2*SLIDER_BORDER,SLIDER_SPACING*2+SLIDER_RANGE-2*SLIDER_BORDER);
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dc->color=BLACK;
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GrLine(dc,c->left+SLIDER_SPACING,c->top+SLIDER_SPACING,
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c->left+SLIDER_SPACING,c->top+SLIDER_SPACING+SLIDER_RANGE-1);
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GrLine(dc,c->left+2*SLIDER_SPACING+1,c->top+SLIDER_SPACING,
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c->left+2*SLIDER_SPACING+1,c->top+SLIDER_SPACING+SLIDER_RANGE-1);
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GrLine(dc,c->left+3*SLIDER_SPACING+2,c->top+SLIDER_SPACING,
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c->left+3*SLIDER_SPACING+2,c->top+SLIDER_SPACING+SLIDER_RANGE-1);
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dc->color=LTGREEN;
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GrPrint(dc,c->left+SLIDER_SPACING-FONT_WIDTH/2,
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c->top+SLIDER_SPACING+SLIDER_RANGE+3,
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"%d",s->s1*10/SLIDER_RANGE);
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GrPrint(dc,c->left+2*SLIDER_SPACING+1-FONT_WIDTH/2,
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c->top+SLIDER_SPACING+SLIDER_RANGE+3,
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"%d",s->s2*10/SLIDER_RANGE);
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GrPrint(dc,c->left+3*SLIDER_SPACING+2-FONT_WIDTH/2,
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c->top+SLIDER_SPACING+SLIDER_RANGE+3,
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"%d",s->s3*10/SLIDER_RANGE);
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GrRect(dc,c->left+SLIDER_SPACING-3, c->top+SLIDER_SPACING+SLIDER_RANGE-1-s->s1-2 ,7,5);
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GrRect(dc,c->left+2*SLIDER_SPACING+1-3,c->top+SLIDER_SPACING+SLIDER_RANGE-1-s->s2-2,7,5);
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GrRect(dc,c->left+3*SLIDER_SPACING+2-3,c->top+SLIDER_SPACING+SLIDER_RANGE-1-s->s3-2,7,5);
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dc->color=GREEN;
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GrRect(dc,c->left+SLIDER_SPACING-2, c->top+SLIDER_SPACING+SLIDER_RANGE-1-s->s1-1 ,5,3);
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GrRect(dc,c->left+2*SLIDER_SPACING+1-2,c->top+SLIDER_SPACING+SLIDER_RANGE-1-s->s2-1,5,3);
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GrRect(dc,c->left+3*SLIDER_SPACING+2-2,c->top+SLIDER_SPACING+SLIDER_RANGE-1-s->s3-1,5,3);
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}
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U0 UpdateDerivedSliderCtrl(CCtrl *c)
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{
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CSliderState *s=c->state;
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c->left=c->win_task->win_pixel_width/2-(SLIDER_SPACING*4+3)/2;
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c->right=c->left+SLIDER_SPACING*4+3;
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c->top=c->win_task->win_pixel_height/2-(SLIDER_SPACING*2+SLIDER_RANGE)/2;
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c->bottom=c->top+SLIDER_SPACING*2+SLIDER_RANGE;
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s->s1=LimitI64(s->s1,0,SLIDER_RANGE-1);
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s->s2=LimitI64(s->s2,0,SLIDER_RANGE-1);
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s->s3=LimitI64(s->s3,1,SLIDER_RANGE-1);
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s->a1=ã/2.0*s->s1/SLIDER_RANGE;
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s->a2=1.0*(s->s2-SLIDER_RANGE/2)/SLIDER_RANGE;
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s->scale=2.0*s->s3/SLIDER_RANGE;
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}
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U0 LeftClickSlider(CCtrl *c,I64 x,I64 y,Bool)
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{
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CSliderState *s=c->state;
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if (x<c->left+(c->right-c->left)/3)
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s->s1=SLIDER_RANGE-1-(y-(c->top+SLIDER_SPACING));
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else if (x<c->left+2*(c->right-c->left)/3)
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s->s2=SLIDER_RANGE-1-(y-(c->top+SLIDER_SPACING));
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else
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s->s3=SLIDER_RANGE-1-(y-(c->top+SLIDER_SPACING));
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if (c->update_derived_vals)
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(*c->update_derived_vals)(c);
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}
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CCtrl *SliderNew()
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{
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Bool old_preempt;
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CCtrl *c=CAlloc(sizeof(CCtrl));
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c->win_task=Fs;
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c->flags=CTRLF_SHOW|CTRLF_CAPTURE_LEFT_IP;
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c->type=CTRLT_GENERIC;
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c->state=&s;
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MemSet(&s,0,sizeof(s));
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c->draw_it=&DrawSliderCtrl;
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c->left_click=&LeftClickSlider;
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c->update_derived_vals=&UpdateDerivedSliderCtrl;
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old_preempt=Preempt(OFF);
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QueIns(c,Fs->last_ctrl);
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TaskDerivedValsUpdate;
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Preempt(old_preempt);
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return c;
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}
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U0 SliderDel(CCtrl *c)
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{
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Bool old_preempt=Preempt(OFF);
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QueRem(c);
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Preempt(old_preempt);
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Free(c);
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}
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$SP,"<1>",1$
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#define MAP_HEIGHT 2048
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#define MAP_WIDTH 2048
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#define NUM_TREES 256
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I64 tree_x[NUM_TREES],tree_y[NUM_TREES];
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class MPCtrl {
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I64 mp_cnt;
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I64 r[16];
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F64 a;
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} mp;
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I64 mp_not_done_flags;
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U0 MPDrawIt(CTask *task)
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{
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CDC *dc=DCAlias(gr_dc2,task);
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I64 i,lo=Gs->num*NUM_TREES/mp.mp_cnt,hi=(Gs->num+1)*NUM_TREES/mp.mp_cnt;
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MemCpy(dc->r,mp.r,sizeof(I64)*16);
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dc->flags|=DCF_TRANSFORMATION;
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for (i=lo;i<hi;i++)
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SpritePlotRotZ3B(dc,tree_x[i],
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tree_y[i],0,$IB,"<tree>",1$,mp.a);
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DCDel(dc);
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LBtr(&mp_not_done_flags,Gs->num);
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}
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U0 DrawIt(CTask *task,CDC *dc)
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{
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I64 i,h,v;
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task->horz_scroll.min=-s.scale*MAP_HEIGHT*Sin(s.a1);
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task->horz_scroll.max=s.scale*MAP_WIDTH*Cos(s.a1)-task->win_pixel_width;
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task->vert_scroll.min=0;
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task->vert_scroll.max=s.scale*(MAP_HEIGHT*Cos(s.a1)+MAP_WIDTH*Sin(s.a1))-task->win_pixel_height;
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TaskDerivedValsUpdate(task);
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h=task->horz_scroll.pos;
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v=task->vert_scroll.pos;
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GrRotZEqu(dc->r,s.a1);
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GrScaleMatEqu(dc->r,s.scale);
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GrSetRotMat(dc,dc->r);
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GrSetTranslation(dc->r,-h,-v,0);
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MemCpy(mp.r,dc->r,sizeof(I64)*16);
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mp.a=s.a2;
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mp_not_done_flags=1<<mp_cnt-1;
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for (i=0;i<mp.mp_cnt;i++)
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JobQue(&MPDrawIt,task,i);
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while (mp_not_done_flags)
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Yield;
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dc->flags|=DCF_TRANSFORMATION;
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dc->color=BROWN;
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dc->pen_width=4;
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GrLine3(dc,2,2,0,MAP_WIDTH-3,2,0);
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GrLine3(dc,2,MAP_HEIGHT-3,0,MAP_WIDTH-3,MAP_HEIGHT-3,0);
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GrLine3(dc,2,2,0,2,MAP_HEIGHT-3,0);
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GrLine3(dc,MAP_WIDTH-3,2,0,MAP_WIDTH-3,MAP_HEIGHT-3,0);
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}
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U0 Init()
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{
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I64 i;
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for (i=0;i<NUM_TREES;i++) {
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tree_x[i]=RandU16%MAP_WIDTH;
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tree_y[i]=RandU16%MAP_HEIGHT;
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}
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}
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U0 TransformDemo(I64 _mp_cnt=mp_cnt)
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{
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SettingsPush; //See $LK,"SettingsPush","MN:SettingsPush"$
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Init;
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Fs->win_inhibit=WIF_ALL-WIF_BORDER-WIF_GRAB_SCROLL-WIF_MENU-WIF_CTRLS;
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DocCursor;
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DocClear;
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DocScroll;
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Fs->draw_it=&DrawIt;
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WinBorder(ON);
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Fs->horz_scroll.pos=0;
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Fs->vert_scroll.pos=0;
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CCtrl *c=SliderNew;
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s.s1=0;
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s.s2=SLIDER_RANGE/2;
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s.s3=SLIDER_RANGE/2;
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MemSet(&mp,0,sizeof(MPCtrl));
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mp.mp_cnt=_mp_cnt;
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View;
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SliderDel(c);
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SettingsPop;
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//If you care, you might want to
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//save the original state of the
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//scroll bars.
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}
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TransformDemo;
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j ( O îÿÿÿÁÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
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