邱エ鄙貞撫鬘�



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Next: 邱エ鄙貞撫鬘� Up: 4 邨オ繧定。ィ遉コ縺輔○繧� Previous: 荳€闊ャ逧�↑豕ィ諢�


邱エ鄙貞撫鬘�

蝗ウ縺ョ繧医≧縺ォ迚ゥ逅�コァ讓咏ウサR縺九i繝�ぅ繧ケ繝励Ξ繧、蠎ァ讓咏ウサG縺ォ謌仙�繧貞、画鋤縺吶k髢「謨ー繝槭け繝ュ gx(),gy()繧剃ス懈�縺励€ヽ荳翫�蠎ァ讓吶〒荳弱∴繧峨l縺溽キ壼�繧堤判髱「縺ォ陦ィ遉コ縺励※荳九&縺�€ゆス� 縺励€∝コァ讓咏ウサR縺ッ螳滓焚縺ァ縲∝コァ讓咏ウサG縺ッ謨エ謨ー縺ァ陦ィ縺輔l縲ヽ縺ョ蜴溽せ縺ョG荳翫〒縺ョ蠎ァ讓吶r (ORIGIN_X, ORIGIN_Y)縲ヽ荳翫�髟キ縺� REAL_SIZE(m) 縺ッG荳翫〒
DISPLAY_SIZE(dot)縺ァ陦ィ縺輔l繧九b縺ョ縺ィ縺吶k縲�


 

Figure 1: 迚ゥ逅�コァ讓咏ウサ縺ィ繝�ぅ繧ケ繝励Ξ繧、蠎ァ讓咏ウサ

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/* "ex4-1.c" --- */

#include <stdio.h>
#include <Xtc.h>

#define ORIGIN_X      320
#define ORIGIN_Y      200
#define REAL_SIZE     1.0
#define DISPLAY_SIZE  150

/* 蠎ァ讓吝、画鋤 */
#define gx(x) ((int)(ORIGIN_X+(x)*DISPLAY_SIZE/REAL_SIZE))
#define gy(y) ((int)(ORIGIN_Y-(y)*DISPLAY_SIZE/REAL_SIZE))

int main(void)
{
    int  x,y;

    initgraph();                           /* 繧ー繝ゥ繝輔ぅ繝�け繧ケ迺ー蠅��蛻晄悄蛹� */

    setcolor( WHITE );                            /* 蠎ァ讓呵サク縺ョ陦ィ遉コ濶イ險ュ螳� */
    line( gx(0.0), gy(0.0), gx(1.0), gy(0.0) );   /* x霆ク縺ョ謠冗判 */
    line( gx(0.0), gy(0.0), gx(0.0), gy(1.0) );   /* y霆ク縺ョ謠冗判 */
    outtextxy( gx(0.0) - 20, gy(0.0) + 20, "0" ); /* 蜴溽せ陦ィ遉コ  */

    setcolor( RED );
    line( gx(0.0), gy(0.0), gx(0.2), gy(0.5) );   /* 邱壼�縺ョ謠冗判 */
    xtcmainloop( 3 );                             /* 邨ゆコ��蜉帛セ�■ */
    closegraph();                          /* 繧ー繝ゥ繝輔ぅ繝�け繧ケ迺ー蠅��邨ゆコ� */
}
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Next: 邱エ鄙貞撫鬘� Up: 4 邨オ繧定。ィ遉コ縺輔○繧� Previous: 荳€闊ャ逧�↑豕ィ諢�




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