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1 | #include <string.h> |
1 | #include <math.h> |
2 | #include <math.h> |
2 | #include "../config.h" |
3 | #include "../config.h" |
3 | #include "rxvt.h" |
4 | #include "rxvt.h" |
4 | |
5 | |
5 | #if HAVE_IMG |
6 | #if HAVE_IMG |
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7 | |
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8 | typedef rxvt_img::nv nv; |
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9 | |
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10 | namespace |
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11 | { |
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12 | |
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13 | struct mat3x3 |
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14 | { |
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15 | nv v[3][3]; |
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16 | |
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17 | mat3x3 () |
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18 | { |
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19 | } |
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20 | |
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21 | mat3x3 (nv matrix[3][3]) |
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22 | { |
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23 | memcpy (v, matrix, sizeof (v)); |
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24 | } |
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25 | |
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26 | mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33) |
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27 | { |
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28 | v[0][0] = v11; v[0][1] = v12; v[0][2] = v13; |
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29 | v[1][0] = v21; v[1][1] = v22; v[1][2] = v23; |
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30 | v[2][0] = v31; v[2][1] = v32; v[2][2] = v33; |
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31 | } |
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32 | |
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33 | mat3x3 invert (); |
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34 | |
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35 | nv *operator [](int i) { return &v[i][0]; } |
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36 | const nv *operator [](int i) const { return &v[i][0]; } |
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37 | |
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38 | // quite inefficient, hopefully gcc pulls the w calc out of any loops |
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39 | nv apply1 (int i, nv x, nv y) |
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40 | { |
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41 | mat3x3 &m = *this; |
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42 | |
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43 | nv v = m[i][0] * x + m[i][1] * y + m[i][2]; |
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44 | nv w = m[2][0] * x + m[2][1] * y + m[2][2]; |
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45 | |
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46 | return v * (1. / w); |
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47 | } |
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48 | |
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49 | static mat3x3 translate (nv x, nv y); |
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50 | }; |
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51 | |
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52 | mat3x3 |
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53 | mat3x3::invert () |
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54 | { |
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55 | mat3x3 &m = *this; |
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56 | mat3x3 inv; |
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57 | |
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58 | nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2]; |
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59 | nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1]; |
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60 | nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2]; |
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61 | |
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62 | nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2); |
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63 | |
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64 | inv[0][0] = invdet * s0; |
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65 | inv[0][1] = invdet * s1; |
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66 | inv[0][2] = invdet * s2; |
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67 | |
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68 | inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]); |
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69 | inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]); |
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70 | inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]); |
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71 | |
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72 | inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]); |
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73 | inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]); |
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74 | inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]); |
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75 | |
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76 | return inv; |
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77 | } |
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78 | |
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79 | static mat3x3 |
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80 | operator *(const mat3x3 &a, const mat3x3 &b) |
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81 | { |
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82 | mat3x3 r; |
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83 | |
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84 | for (int i = 0; i < 3; ++i) |
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85 | for (int j = 0; j < 3; ++j) |
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86 | r[i][j] = a[i][0] * b[0][j] |
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87 | + a[i][1] * b[1][j] |
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88 | + a[i][2] * b[2][j]; |
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89 | |
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90 | return r; |
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91 | } |
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92 | |
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93 | mat3x3 |
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94 | mat3x3::translate (nv x, nv y) |
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95 | { |
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96 | return mat3x3 ( |
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97 | 1, 0, x, |
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98 | 0, 1, y, |
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99 | 0, 0, 1 |
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100 | ); |
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101 | } |
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102 | |
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103 | } |
6 | |
104 | |
7 | #if 0 |
105 | #if 0 |
8 | struct pict |
106 | struct pict |
9 | { |
107 | { |
10 | Display *dpy; |
108 | Display *dpy; |
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… | |
312 | |
410 | |
313 | delete img; |
411 | delete img; |
314 | } |
412 | } |
315 | |
413 | |
316 | static void |
414 | static void |
317 | get_gaussian_kernel (int radius, int width, rxvt_img::nv *kernel, XFixed *params) |
415 | get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params) |
318 | { |
416 | { |
319 | rxvt_img::nv sigma = radius / 2.0; |
417 | nv sigma = radius / 2.0; |
320 | rxvt_img::nv scale = sqrt (2.0 * M_PI) * sigma; |
418 | nv scale = sqrt (2.0 * M_PI) * sigma; |
321 | rxvt_img::nv sum = 0.0; |
419 | nv sum = 0.0; |
322 | |
420 | |
323 | for (int i = 0; i < width; i++) |
421 | for (int i = 0; i < width; i++) |
324 | { |
422 | { |
325 | rxvt_img::nv x = i - width / 2; |
423 | nv x = i - width / 2; |
326 | kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
424 | kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
327 | sum += kernel[i]; |
425 | sum += kernel[i]; |
328 | } |
426 | } |
329 | |
427 | |
330 | params[0] = XDoubleToFixed (width); |
428 | params[0] = XDoubleToFixed (width); |
… | |
… | |
595 | } |
693 | } |
596 | |
694 | |
597 | return img; |
695 | return img; |
598 | } |
696 | } |
599 | |
697 | |
600 | static void |
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601 | mat_invert (rxvt_img::nv mat[3][3], rxvt_img::nv (&inv)[3][3]) |
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602 | { |
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603 | rxvt_img::nv s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2]; |
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604 | rxvt_img::nv s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1]; |
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605 | rxvt_img::nv s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2]; |
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606 | |
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607 | rxvt_img::nv invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2); |
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608 | |
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609 | inv [0][0] = invdet * s0; |
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610 | inv [0][1] = invdet * s1; |
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611 | inv [0][2] = invdet * s2; |
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612 | |
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613 | inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]); |
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614 | inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]); |
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615 | inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]); |
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616 | |
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617 | inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]); |
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618 | inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]); |
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619 | inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]); |
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620 | } |
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621 | |
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622 | static rxvt_img::nv |
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623 | mat_apply (rxvt_img::nv mat[3][3], int i, rxvt_img::nv x, rxvt_img::nv y) |
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624 | { |
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625 | rxvt_img::nv v = mat [i][0] * x + mat [i][1] * y + mat [i][2]; |
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626 | rxvt_img::nv w = mat [2][0] * x + mat [2][1] * y + mat [2][2]; |
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627 | |
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628 | return v * (1. / w); |
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629 | } |
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630 | |
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631 | rxvt_img * |
698 | rxvt_img * |
632 | rxvt_img::transform (nv matrix[3][3]) |
699 | rxvt_img::transform (nv matrix[3][3]) |
633 | { |
700 | { |
634 | // calculate new pixel bounding box coordinates |
701 | // calculate new pixel bounding box coordinates |
635 | nv rmin[2], rmax[2]; |
702 | nv r[2], rmin[2], rmax[2]; |
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703 | |
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704 | mat3x3 m (matrix); |
636 | |
705 | |
637 | for (int i = 0; i < 2; ++i) |
706 | for (int i = 0; i < 2; ++i) |
638 | { |
707 | { |
639 | nv v; |
708 | nv v; |
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709 | |
640 | v = mat_apply (matrix, i, 0+x, 0+y); rmin [i] = rmax [i] = v; |
710 | v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v; |
641 | v = mat_apply (matrix, i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v); |
711 | v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v); |
642 | v = mat_apply (matrix, i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
712 | v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
643 | v = mat_apply (matrix, i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
713 | v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
644 | } |
714 | } |
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715 | |
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716 | float sx = rmin [0] - x; |
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717 | float sy = rmin [1] - y; |
645 | |
718 | |
646 | // TODO: adjust matrix for subpixel accuracy |
719 | // TODO: adjust matrix for subpixel accuracy |
647 | int dx = floor (rmin [0]); |
720 | int nx = floor (rmin [0]); |
648 | int dy = floor (rmin [1]); |
721 | int ny = floor (rmin [1]); |
649 | |
722 | |
650 | int new_width = ceil (rmax [0] - dx); |
723 | int new_width = ceil (rmax [0] - rmin [0]); |
651 | int new_height = ceil (rmax [1] - dy); |
724 | int new_height = ceil (rmax [1] - rmin [1]); |
652 | |
725 | |
653 | nv inv[3][3]; |
726 | m = mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y); |
654 | mat_invert (matrix, inv); |
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655 | |
727 | |
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728 | mat3x3 inv = m.invert (); |
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729 | |
656 | rxvt_img *img = new rxvt_img (s, format, dx, dy, new_width, new_height, repeat); |
730 | rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat); |
657 | img->alloc (); |
731 | img->alloc (); |
658 | |
732 | |
659 | Display *dpy = s->display->dpy; |
733 | Display *dpy = s->display->dpy; |
660 | Picture src = picture (); |
734 | Picture src = picture (); |
661 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
735 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
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666 | for (int j = 0; j < 3; ++j) |
740 | for (int j = 0; j < 3; ++j) |
667 | xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
741 | xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
668 | |
742 | |
669 | XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
743 | XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
670 | XRenderSetPictureTransform (dpy, src, &xfrm); |
744 | XRenderSetPictureTransform (dpy, src, &xfrm); |
671 | XRenderComposite (dpy, PictOpSrc, src, None, dst, dx, dy, 0, 0, 0, 0, new_width, new_height); |
745 | XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height); |
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746 | #if 1 |
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747 | { |
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748 | XRenderColor rc = { 65535,0,0,65535 }; |
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749 | XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, new_width, new_height); |
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750 | }{ |
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751 | XRenderColor rc = { 0,0,0,65535 }; |
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752 | XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 1, 1, new_width - 2, new_height - 2); |
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753 | } |
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754 | XRenderComposite (dpy, PictOpOver, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height); |
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755 | #endif |
672 | |
756 | |
673 | XRenderFreePicture (dpy, src); |
757 | XRenderFreePicture (dpy, src); |
674 | XRenderFreePicture (dpy, dst); |
758 | XRenderFreePicture (dpy, dst); |
675 | |
759 | |
676 | return img; |
760 | return img; |
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… | |
704 | { |
788 | { |
705 | nv s = sin (phi); |
789 | nv s = sin (phi); |
706 | nv c = cos (phi); |
790 | nv c = cos (phi); |
707 | |
791 | |
708 | nv matrix[3][3] = { |
792 | nv matrix[3][3] = { |
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793 | #if 0 |
709 | { c, -s, cx - c * cx + s * cy + 200 }, |
794 | { c, -s, cx - c * cx + s * cy }, |
710 | { s, c, cy - s * cx - c * cy }, |
795 | { s, c, cy - s * cx - c * cy }, |
711 | { 0, 0, 1 } |
796 | { 0, 0, 1 } |
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797 | #else |
712 | //{ c, -s, 0 }, |
798 | { c, -s, 0 }, |
713 | //{ s, c, 0 }, |
799 | { s, c, 0 }, |
714 | //{ 0, 0, 1 } |
800 | { 0, 0, 1 } |
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801 | #endif |
715 | }; |
802 | }; |
716 | |
803 | |
717 | //move (-cx, -cy); |
804 | move (-cx, -cy); |
718 | rxvt_img *img = transform (matrix); |
805 | rxvt_img *img = transform (matrix); |
719 | //move ( cx, cy); |
806 | move ( cx, cy); |
720 | //img->move (cx, cy); |
807 | img->move (cx, cy); |
721 | |
808 | |
722 | return img; |
809 | return img; |
723 | } |
810 | } |
724 | |
811 | |
725 | rxvt_img * |
812 | rxvt_img * |