103 static int coincident_line(const SkDCubic& cubic, SkDCubic& reduction) {  in coincident_line()  argument
104     reduction[0] = reduction[1] = cubic[0];  in coincident_line()
112 static int vertical_line(const SkDCubic& cubic, SkDCubic& reduction) {  in vertical_line()  argument
113     reduction[0] = cubic[0];  in vertical_line()
114     reduction[1] = cubic[3];  in vertical_line()
118 static int horizontal_line(const SkDCubic& cubic, SkDCubic& reduction) {  in horizontal_line()  argument
119     reduction[0] = cubic[0];  in horizontal_line()
120     reduction[1] = cubic[3];  in horizontal_line()
125 static int check_quadratic(const SkDCubic& cubic, SkDCubic& reduction) {  in check_quadratic()  argument
126     double dx10 = cubic[1].fX - cubic[0].fX;  in check_quadratic()
127     double dx23 = cubic[2].fX - cubic[3].fX;  in check_quadratic()
128     double midX = cubic[0].fX + dx10 * 3 / 2;  in check_quadratic()
129     double sideAx = midX - cubic[3].fX;  in check_quadratic()
135     double dy10 = cubic[1].fY - cubic[0].fY;  in check_quadratic()
136     double dy23 = cubic[2].fY - cubic[3].fY;  in check_quadratic()
137     double midY = cubic[0].fY + dy10 * 3 / 2;  in check_quadratic()
138     double sideAy = midY - cubic[3].fY;  in check_quadratic()
144     reduction[0] = cubic[0];  in check_quadratic()
147     reduction[2] = cubic[3];  in check_quadratic()
151 static int check_linear(const SkDCubic& cubic,  in check_linear()  argument
153     if (!cubic.isLinear(0, 3)) {  in check_linear()
157     reduction[0] = cubic[0];  in check_linear()
158     reduction[1] = cubic[3];  in check_linear()
188 int SkReduceOrder::reduce(const SkDCubic& cubic, Quadratics allowQuadratics) {  in reduce()  argument
194         if (cubic[minX].fX > cubic[index].fX) {  in reduce()
197         if (cubic[minY].fY > cubic[index].fY) {  in reduce()
200         if (cubic[maxX].fX < cubic[index].fX) {  in reduce()
203         if (cubic[maxY].fY < cubic[index].fY) {  in reduce()
208         double cx = cubic[index].fX;  in reduce()
209         double cy = cubic[index].fY;  in reduce()
211                 std::max(fabs(cubic[minX].fX), fabs(cubic[minY].fY))));  in reduce()
218         if (approximately_equal_half(cx * inv, cubic[minX].fX * inv)) {  in reduce()
221         if (approximately_equal_half(cy * inv, cubic[minY].fY * inv)) {  in reduce()
227             return coincident_line(cubic, fCubic);  in reduce()
229         return vertical_line(cubic, fCubic);  in reduce()
232         return horizontal_line(cubic, fCubic);  in reduce()
234     int result = check_linear(cubic, minX, maxX, minY, maxY, fCubic);  in reduce()
239             && (result = check_quadratic(cubic, fCubic))) {  in reduce()
242     fCubic = cubic;  in reduce()
273     SkDCubic cubic;  in Cubic()  local
274     cubic.set(a);  in Cubic()
276     int order = reducer.reduce(cubic, kAllow_Quadratics);  in Cubic()