107 lines
2.0 KiB
HolyC
107 lines
2.0 KiB
HolyC
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F64 MySin(F64 d)
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{ //Sin() does not have an address.
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return Sin(d);
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}
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F64 MyCos(F64 d)
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{ //Cos() does not have an address.
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return Cos(d);
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}
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U0 FunDraw1(CDC *dc,F64 (*f)(F64 t))
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{
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I64 i,w=Fs->pix_width,h=Fs->pix_height;
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F64 scale=h/5.0;
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for (i=-w/2;i<=w/2;i++)
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GrLine(dc,w/2+i,h/2-scale*f(i/scale*2*<EFBFBD>),
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w/2+i+1,h/2-scale*f((i+1)/scale*2*<EFBFBD>));
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}
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U0 FunDraw2(CDC *dc,F64 (*f)(F64 t,F64 p),F64 T)
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{
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I64 i,w=Fs->pix_width,h=Fs->pix_height;
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F64 scale=h/5.0;
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for (i=-w/2;i<=w/2;i++)
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GrLine(dc,w/2+i,h/2-scale*f(i/scale,T),w/2+i+1,h/2-scale*f((i+1)/scale,T));
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}
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U0 Init(CDC *dc)
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{
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I64 i,w=Fs->pix_width,h=Fs->pix_height;
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F64 scale=h/5.0;
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DocClear;
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DCFill(dc);
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dc->color=BLACK;
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GrLine(dc,0,h/2,w-1,h/2);
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GrLine(dc,w/2,0,w/2,h-1);
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for (i=-2;i<=2;i++) {
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dc->color=BLACK;
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GrLine(dc,w/2-3,h/2-scale*i,w/2+3,h/2-scale*i);
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if (i) {
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dc->color=DKGRAY;
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GrPrint(dc,w/2+5,h/2-scale*i-FONT_HEIGHT/2,"%5.1f",ToF64(i));
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}
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}
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for (i=-4;i<=4;i++) {
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dc->color=BLACK;
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GrLine(dc,w/2+scale*i,h/2-3,w/2+scale*i,h/2+3);
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if (i) {
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dc->color=DKGRAY;
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GrPrint(dc,
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w/2+scale*i-7*FONT_WIDTH/2,h/2+5+FONT_HEIGHT,"%5.1f*T",ToF64(i));
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}
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}
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}
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U0 SndMathDemo()
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{
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CDC *dc=DCAlias;
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Init(dc);
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dc->color=RED;
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FunDraw1(dc,&MySin);
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"$$RED$$Sin$$FG$$\n";
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PressAKey;
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dc->color=BLUE;
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FunDraw2(dc,&Saw,1.0);
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"$$BLUE$$Saw$$FG$$\n";
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PressAKey;
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dc->color=GREEN;
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FunDraw2(dc,&FullSaw,1.0);
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"$$GREEN$$FullSaw$$FG$$\n";
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PressAKey;
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Init(dc);
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dc->color=RED;
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FunDraw1(dc,&MyCos);
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"$$RED$$Cos$$FG$$\n";
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PressAKey;
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dc->color=BLUE;
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FunDraw2(dc,&Caw,1.0);
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"$$BLUE$$Caw$$FG$$\n";
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PressAKey;
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dc->color=GREEN;
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FunDraw2(dc,&FullCaw,1.0);
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"$$GREEN$$FullCaw$$FG$$\n";
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PressAKey;
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Init(dc);
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dc->color=RED;
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FunDraw1(dc,&MySin);
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"$$RED$$Sin$$FG$$\n";
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PressAKey;
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dc->color=BLUE;
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FunDraw2(dc,&Tri,1.0);
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"$$BLUE$$Tri$$FG$$\n";
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PressAKey;
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dc->color=GREEN;
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FunDraw2(dc,&FullTri,1.0);
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"$$GREEN$$FullTri$$FG$$\n";
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PressAKey;
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DCFill(dc);
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DCDel(dc);
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}
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SndMathDemo;
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