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feat: add stroke thickness

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Froxwin
2026-03-05 00:51:20 +05:30
parent 8ac783e6e0
commit eefd95e4d2
15 changed files with 379 additions and 356 deletions
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92
src/core/matrix.c
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@@ -4,86 +4,86 @@
inline M33 m33_zero(void) { return (M33){{{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}}; }
inline M33 m33_identity(void) {
return (M33){{{1, 0, 0}, {0, 1, 0}, {0, 0, 1}}};
return (M33){{{1, 0, 0}, {0, 1, 0}, {0, 0, 1}}};
}
inline M33 m33_translate(double tx, double ty) {
return (M33){{{1, 0, tx}, {0, 1, ty}, {0, 0, 1}}};
return (M33){{{1, 0, tx}, {0, 1, ty}, {0, 0, 1}}};
}
inline M33 m33_scale(double sx, double sy) {
return (M33){{{sx, 0, 0}, {0, sy, 0}, {0, 0, 1}}};
return (M33){{{sx, 0, 0}, {0, sy, 0}, {0, 0, 1}}};
}
inline M33 m33_rotate(double theta) {
return (M33){
{{cos(theta), -sin(theta), 0}, {sin(theta), cos(theta), 0}, {0, 0, 1}}};
return (M33){
{{cos(theta), -sin(theta), 0}, {sin(theta), cos(theta), 0}, {0, 0, 1}}};
}
inline M33 m33_shear(double theta_x, double theta_y) {
return (M33){{{1, tan(theta_x), 0}, {tan(theta_y), 1, 0}, {0, 0, 0}}};
return (M33){{{1, tan(theta_x), 0}, {tan(theta_y), 1, 0}, {0, 0, 0}}};
}
M33 m33_add(const M33 m1, const M33 m2) {
M33 res;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3; ++j)
res.m[i][j] = m1.m[i][j] + m2.m[i][j];
return res;
M33 res;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3; ++j)
res.m[i][j] = m1.m[i][j] + m2.m[i][j];
return res;
}
M33 m33_sub(const M33 m1, const M33 m2) {
M33 res;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3; ++j)
res.m[i][j] = m1.m[i][j] - m2.m[i][j];
return res;
M33 res;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3; ++j)
res.m[i][j] = m1.m[i][j] - m2.m[i][j];
return res;
}
M33 m33_mul(const M33 m1, const M33 m2) {
M33 res = {{{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}};
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3; ++j)
for (int k = 0; k < 3; ++k)
res.m[i][j] += m1.m[i][k] * m2.m[k][j];
return res;
M33 res = {{{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}};
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3; ++j)
for (int k = 0; k < 3; ++k)
res.m[i][j] += m1.m[i][k] * m2.m[k][j];
return res;
}
M33 m33_transpose(const M33 m) {
M33 res;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3; ++j)
res.m[i][j] = m.m[j][i];
return res;
M33 res;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3; ++j)
res.m[i][j] = m.m[j][i];
return res;
}
// 2D affine transform inversion (not general 3x3 inversion)
M33 m33_inverse(const M33 m) {
M33 inv;
double det;
M33 inv;
double det;
det = m.m[0][0] * m.m[1][1] - m.m[0][1] * m.m[1][0];
if (det == 0.0) {
return m33_identity();
}
double invDet = 1.0 / det;
det = m.m[0][0] * m.m[1][1] - m.m[0][1] * m.m[1][0];
if (det == 0.0) {
return m33_identity();
}
double invDet = 1.0 / det;
inv.m[0][0] = m.m[1][1] * invDet;
inv.m[0][1] = -m.m[0][1] * invDet;
inv.m[1][0] = -m.m[1][0] * invDet;
inv.m[1][1] = m.m[0][0] * invDet;
inv.m[0][0] = m.m[1][1] * invDet;
inv.m[0][1] = -m.m[0][1] * invDet;
inv.m[1][0] = -m.m[1][0] * invDet;
inv.m[1][1] = m.m[0][0] * invDet;
inv.m[0][2] = -(inv.m[0][0] * m.m[0][2] + inv.m[0][1] * m.m[1][2]);
inv.m[1][2] = -(inv.m[1][0] * m.m[0][2] + inv.m[1][1] * m.m[1][2]);
inv.m[0][2] = -(inv.m[0][0] * m.m[0][2] + inv.m[0][1] * m.m[1][2]);
inv.m[1][2] = -(inv.m[1][0] * m.m[0][2] + inv.m[1][1] * m.m[1][2]);
inv.m[2][0] = 0;
inv.m[2][1] = 0;
inv.m[2][2] = 1;
inv.m[2][0] = 0;
inv.m[2][1] = 0;
inv.m[2][2] = 1;
return inv;
return inv;
}
V2 m33_transform(const M33 mat, const V2 v) {
return (V2){mat.m[0][0] * v.x + mat.m[0][1] * v.y + mat.m[0][2],
mat.m[1][0] * v.x + mat.m[1][1] * v.y + mat.m[1][2]};
return (V2){mat.m[0][0] * v.x + mat.m[0][1] * v.y + mat.m[0][2],
mat.m[1][0] * v.x + mat.m[1][1] * v.y + mat.m[1][2]};
}