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1 /* | 1 /* |
2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 The Android Open Source Project |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkMatrix.h" | 8 #include "SkMatrix.h" |
9 #include "SkFloatBits.h" | 9 #include "SkFloatBits.h" |
10 #include "SkString.h" | 10 #include "SkString.h" |
11 #include "Sk4x.h" | 11 #include "SkNx.h" |
12 | 12 |
13 #include <stddef.h> | 13 #include <stddef.h> |
14 | 14 |
15 static void normalize_perspective(SkScalar mat[9]) { | 15 static void normalize_perspective(SkScalar mat[9]) { |
16 // If it was interesting to never store the last element, we could divide al
l 8 other | 16 // If it was interesting to never store the last element, we could divide al
l 8 other |
17 // elements here by the 9th, making it 1.0... | 17 // elements here by the 9th, making it 1.0... |
18 // | 18 // |
19 // When SkScalar was SkFixed, we would sometimes rescale the entire matrix t
o keep its | 19 // When SkScalar was SkFixed, we would sometimes rescale the entire matrix t
o keep its |
20 // component values from getting too large. This is not a concern when using
floats/doubles, | 20 // component values from getting too large. This is not a concern when using
floats/doubles, |
21 // so we do nothing now. | 21 // so we do nothing now. |
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871 void SkMatrix::Identity_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[
], int count) { | 871 void SkMatrix::Identity_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[
], int count) { |
872 SkASSERT(m.getType() == 0); | 872 SkASSERT(m.getType() == 0); |
873 | 873 |
874 if (dst != src && count > 0) { | 874 if (dst != src && count > 0) { |
875 memcpy(dst, src, count * sizeof(SkPoint)); | 875 memcpy(dst, src, count * sizeof(SkPoint)); |
876 } | 876 } |
877 } | 877 } |
878 | 878 |
879 void SkMatrix::Trans_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[],
int count) { | 879 void SkMatrix::Trans_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[],
int count) { |
880 SkASSERT(m.getType() <= kTranslate_Mask); | 880 SkASSERT(m.getType() <= kTranslate_Mask); |
881 | 881 |
882 if (count > 0) { | 882 if (count > 0) { |
883 SkScalar tx = m.getTranslateX(); | 883 SkScalar tx = m.getTranslateX(); |
884 SkScalar ty = m.getTranslateY(); | 884 SkScalar ty = m.getTranslateY(); |
885 if (count & 1) { | 885 if (count & 1) { |
886 dst->fX = src->fX + tx; | 886 dst->fX = src->fX + tx; |
887 dst->fY = src->fY + ty; | 887 dst->fY = src->fY + ty; |
888 src += 1; | 888 src += 1; |
889 dst += 1; | 889 dst += 1; |
890 } | 890 } |
891 Sk4f trans4(tx, ty, tx, ty); | 891 Sk4s trans4(tx, ty, tx, ty); |
892 count >>= 1; | 892 count >>= 1; |
893 if (count & 1) { | 893 if (count & 1) { |
894 (Sk4f::Load(&src->fX) + trans4).store(&dst->fX); | 894 (Sk4s::Load(&src->fX) + trans4).store(&dst->fX); |
895 src += 2; | 895 src += 2; |
896 dst += 2; | 896 dst += 2; |
897 } | 897 } |
898 count >>= 1; | 898 count >>= 1; |
899 for (int i = 0; i < count; ++i) { | 899 for (int i = 0; i < count; ++i) { |
900 (Sk4f::Load(&src[0].fX) + trans4).store(&dst[0].fX); | 900 (Sk4s::Load(&src[0].fX) + trans4).store(&dst[0].fX); |
901 (Sk4f::Load(&src[2].fX) + trans4).store(&dst[2].fX); | 901 (Sk4s::Load(&src[2].fX) + trans4).store(&dst[2].fX); |
902 src += 4; | 902 src += 4; |
903 dst += 4; | 903 dst += 4; |
904 } | 904 } |
905 } | 905 } |
906 } | 906 } |
907 | 907 |
908 void SkMatrix::Scale_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[],
int count) { | 908 void SkMatrix::Scale_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[],
int count) { |
909 SkASSERT(m.getType() <= (kScale_Mask | kTranslate_Mask)); | 909 SkASSERT(m.getType() <= (kScale_Mask | kTranslate_Mask)); |
910 | 910 |
911 if (count > 0) { | 911 if (count > 0) { |
912 SkScalar tx = m.getTranslateX(); | 912 SkScalar tx = m.getTranslateX(); |
913 SkScalar ty = m.getTranslateY(); | 913 SkScalar ty = m.getTranslateY(); |
914 SkScalar sx = m.getScaleX(); | 914 SkScalar sx = m.getScaleX(); |
915 SkScalar sy = m.getScaleY(); | 915 SkScalar sy = m.getScaleY(); |
916 if (count & 1) { | 916 if (count & 1) { |
917 dst->fX = src->fX * sx + tx; | 917 dst->fX = src->fX * sx + tx; |
918 dst->fY = src->fY * sy + ty; | 918 dst->fY = src->fY * sy + ty; |
919 src += 1; | 919 src += 1; |
920 dst += 1; | 920 dst += 1; |
921 } | 921 } |
922 Sk4f trans4(tx, ty, tx, ty); | 922 Sk4s trans4(tx, ty, tx, ty); |
923 Sk4f scale4(sx, sy, sx, sy); | 923 Sk4s scale4(sx, sy, sx, sy); |
924 count >>= 1; | 924 count >>= 1; |
925 if (count & 1) { | 925 if (count & 1) { |
926 (Sk4f::Load(&src->fX) * scale4 + trans4).store(&dst->fX); | 926 (Sk4s::Load(&src->fX) * scale4 + trans4).store(&dst->fX); |
927 src += 2; | 927 src += 2; |
928 dst += 2; | 928 dst += 2; |
929 } | 929 } |
930 count >>= 1; | 930 count >>= 1; |
931 for (int i = 0; i < count; ++i) { | 931 for (int i = 0; i < count; ++i) { |
932 (Sk4f::Load(&src[0].fX) * scale4 + trans4).store(&dst[0].fX); | 932 (Sk4s::Load(&src[0].fX) * scale4 + trans4).store(&dst[0].fX); |
933 (Sk4f::Load(&src[2].fX) * scale4 + trans4).store(&dst[2].fX); | 933 (Sk4s::Load(&src[2].fX) * scale4 + trans4).store(&dst[2].fX); |
934 src += 4; | 934 src += 4; |
935 dst += 4; | 935 dst += 4; |
936 } | 936 } |
937 } | 937 } |
938 } | 938 } |
939 | 939 |
940 void SkMatrix::Rot_pts(const SkMatrix& m, SkPoint dst[], | 940 void SkMatrix::Rot_pts(const SkMatrix& m, SkPoint dst[], |
941 const SkPoint src[], int count) { | 941 const SkPoint src[], int count) { |
942 SkASSERT((m.getType() & (kPerspective_Mask | kTranslate_Mask)) == 0); | 942 SkASSERT((m.getType() & (kPerspective_Mask | kTranslate_Mask)) == 0); |
943 | 943 |
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1021 SkScalar sx = m.getScaleX(); | 1021 SkScalar sx = m.getScaleX(); |
1022 SkScalar sy = m.getScaleY(); | 1022 SkScalar sy = m.getScaleY(); |
1023 SkScalar kx = m.getSkewX(); | 1023 SkScalar kx = m.getSkewX(); |
1024 SkScalar ky = m.getSkewY(); | 1024 SkScalar ky = m.getSkewY(); |
1025 if (count & 1) { | 1025 if (count & 1) { |
1026 dst->set(src->fX * sx + src->fY * kx + tx, | 1026 dst->set(src->fX * sx + src->fY * kx + tx, |
1027 src->fX * ky + src->fY * sy + ty); | 1027 src->fX * ky + src->fY * sy + ty); |
1028 src += 1; | 1028 src += 1; |
1029 dst += 1; | 1029 dst += 1; |
1030 } | 1030 } |
1031 Sk4f trans4(tx, ty, tx, ty); | 1031 Sk4s trans4(tx, ty, tx, ty); |
1032 Sk4f scale4(sx, sy, sx, sy); | 1032 Sk4s scale4(sx, sy, sx, sy); |
1033 Sk4f skew4(kx, ky, kx, ky); // applied to swizzle of src4 | 1033 Sk4s skew4(kx, ky, kx, ky); // applied to swizzle of src4 |
1034 count >>= 1; | 1034 count >>= 1; |
1035 for (int i = 0; i < count; ++i) { | 1035 for (int i = 0; i < count; ++i) { |
1036 Sk4f src4 = Sk4f::Load(&src->fX); | 1036 Sk4s src4 = Sk4s::Load(&src->fX); |
1037 Sk4f swz4(src[0].fY, src[0].fX, src[1].fY, src[1].fX); // need ABCD
-> BADC | 1037 Sk4s swz4(src[0].fY, src[0].fX, src[1].fY, src[1].fX); // need ABCD
-> BADC |
1038 (src4 * scale4 + swz4 * skew4 + trans4).store(&dst->fX); | 1038 (src4 * scale4 + swz4 * skew4 + trans4).store(&dst->fX); |
1039 src += 2; | 1039 src += 2; |
1040 dst += 2; | 1040 dst += 2; |
1041 } | 1041 } |
1042 } | 1042 } |
1043 } | 1043 } |
1044 | 1044 |
1045 const SkMatrix::MapPtsProc SkMatrix::gMapPtsProcs[] = { | 1045 const SkMatrix::MapPtsProc SkMatrix::gMapPtsProcs[] = { |
1046 SkMatrix::Identity_pts, SkMatrix::Trans_pts, | 1046 SkMatrix::Identity_pts, SkMatrix::Trans_pts, |
1047 SkMatrix::Scale_pts, SkMatrix::Scale_pts, | 1047 SkMatrix::Scale_pts, SkMatrix::Scale_pts, |
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1845 rotation1->fX = cos1; | 1845 rotation1->fX = cos1; |
1846 rotation1->fY = sin1; | 1846 rotation1->fY = sin1; |
1847 } | 1847 } |
1848 if (rotation2) { | 1848 if (rotation2) { |
1849 rotation2->fX = cos2; | 1849 rotation2->fX = cos2; |
1850 rotation2->fY = sin2; | 1850 rotation2->fY = sin2; |
1851 } | 1851 } |
1852 | 1852 |
1853 return true; | 1853 return true; |
1854 } | 1854 } |
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