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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1493 | giacomo | 1 | |
| 2 | #include <kernel/kern.h> |
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| 3 | #include <tracer.h> |
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| 4 | |||
| 5 | #define PWCET_Automatic_Ipoint(a) TRACER_LOGEVENT(FTrace_EVT_ipoint,(a),0); |
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| 6 | |||
| 7 | /* here are the bezier curves defined |
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| 8 | format: |
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| 9 | {startpoint, endpoint, controlpoint1, controlpoint} |
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| 10 | . |
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| 11 | . |
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| 12 | . */ |
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| 13 | int curveno = 20; |
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| 14 | int data[20][4][2] = { |
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| 15 | {{123,321},{ 23,432},{345,120},{123, 98}}, |
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| 16 | {{567, 31},{ 23, 24},{ 35,421},{123,398}}, |
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| 17 | {{ 0, 21},{623,532},{145,323},{153, 68}}, |
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| 18 | {{253,321},{ 23,432},{745,525},{423,198}}, |
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| 19 | {{123,456},{ 23,482},{ 0,123},{123,128}}, |
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| 20 | {{322, 21},{223,232},{ 45,224},{123,98}}, |
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| 21 | {{423, 32},{123,332},{144,329},{123,98}}, |
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| 22 | {{276, 35},{ 23,492},{476,423},{123,98}}, |
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| 23 | {{783,121},{723,139},{ 78,528},{123,98}}, |
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| 24 | {{723,221},{623, 98},{734,683},{123,98}}, |
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| 25 | {{ 60,421},{523,132},{364,753},{123,98}}, |
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| 26 | {{100,521},{423,432},{633,623},{123,98}}, |
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| 27 | {{ 23,371},{323,599},{343,533},{123,98}}, |
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| 28 | {{123,123},{123, 0},{343,403},{123,98}}, |
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| 29 | {{253,321},{490, 32},{347,393},{123,98}}, |
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| 30 | {{ 68,321},{260,272},{674,283},{123,98}}, |
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| 31 | {{500,321},{245,373},{ 98,173},{123,98}}, |
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| 32 | {{423,321},{198,532},{306, 63},{123,98}}, |
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| 33 | {{197,321},{203,432},{307,443},{123,98}}, |
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| 34 | {{143,321},{293,132},{334,393},{123,98}} |
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| 35 | }; |
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| 36 | #define STEPWIDTH 0.01 /* draws 1/STEPWIDTH +1 points between SP and EP */ |
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| 37 | #define XSIZE 800 |
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| 38 | #define YSIZE 600 |
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| 39 | |||
| 40 | char screen[YSIZE][XSIZE]; |
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| 41 | int xco[4],yco[4]; |
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| 42 | |||
| 43 | int init() |
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| 44 | { |
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| 45 | int y,x; |
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| 46 | |||
| 47 | /*initialize screen*/ |
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| 48 | for (x = 0;x < XSIZE;x++) { |
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| 49 | for (y = 0;y < YSIZE;y++) { |
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| 50 | screen[y][x] = 255; /*white*/ |
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| 51 | } |
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| 52 | } |
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| 53 | |||
| 54 | return 0; |
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| 55 | |||
| 56 | } |
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| 57 | |||
| 58 | void rand_init() |
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| 59 | { |
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| 60 | int i,j,x,y; |
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| 61 | for (i=0;i<20;i++) |
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| 62 | for (j=0;j<4;j++) { |
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| 63 | x=rand()%800; |
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| 64 | y=rand()%600; |
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| 65 | data[i][j][0]=x; |
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| 66 | data[i][j][1]=y; |
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| 67 | } |
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| 68 | } |
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| 69 | |||
| 70 | int bezier() |
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| 71 | { |
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| 72 | |||
| 73 | int i,y,x; |
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| 74 | float k; |
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| 75 | |||
| 76 | init(); |
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| 77 | |||
| 78 | for (i = 0;i < curveno;i++) { |
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| 79 | xco[3] = data[i][0][0]; |
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| 80 | yco[3] = data[i][0][1]; |
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| 81 | xco[2] = 3*(data[i][2][0] - data[i][0][0]); |
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| 82 | yco[2] = 3*(data[i][2][1] - data[i][0][1]); |
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| 83 | xco[1] = 3*(data[i][3][0] - data[i][2][0]) - xco[2]; |
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| 84 | yco[1] = 3*(data[i][3][1] - data[i][2][1]) - yco[2]; |
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| 85 | xco[0] = data[i][1][0] - data[i][0][0] - xco[2]- xco[1]; |
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| 86 | yco[0] = data[i][1][1] - data[i][0][1] - yco[2]- yco[1]; |
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| 87 | |||
| 88 | /*scan curve for t = 0 to t = 1 with STEPWIDTH*/ |
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| 89 | for (k = 0;k <=1;k+=STEPWIDTH) { /* PAN_FIXED_LOOP PAN_VARPATH */ |
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| 90 | x = (int)(((float)xco[0]*k*k*k)+((float)xco[1]*k*k)+((float)xco[2]*k)+(float)xco[3]); |
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| 91 | y = (int)(((float)yco[0]*k*k*k)+((float)yco[1]*k*k)+((float)yco[2]*k)+(float)yco[3]); |
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| 92 | if ((x < XSIZE)&&(x > 0)&&(y < YSIZE)&&(y > 0)) { |
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| 93 | /*write dot to screen*/ |
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| 94 | screen[y][x] = 0; /*black*/ |
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| 95 | } |
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| 96 | } |
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| 97 | } |
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| 98 | |||
| 99 | return 0; |
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| 100 | } |
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| 101 | |||
| 102 | int instrumented_function() { |
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| 103 | |||
| 104 | rand_init(); |
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| 105 | |||
| 106 | bezier(); |
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| 107 | |||
| 108 | return 0; |
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| 109 | } |
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| 110 |