100 static int coincident_line(const SkDCubic& cubic, SkDCubic& reduction) {  in coincident_line()  argument
101     reduction[0] = reduction[1] = cubic[0];  in coincident_line()
109 static int vertical_line(const SkDCubic& cubic, SkDCubic& reduction) {  in vertical_line()  argument
110     reduction[0] = cubic[0];  in vertical_line()
111     reduction[1] = cubic[3];  in vertical_line()
115 static int horizontal_line(const SkDCubic& cubic, SkDCubic& reduction) {  in horizontal_line()  argument
116     reduction[0] = cubic[0];  in horizontal_line()
117     reduction[1] = cubic[3];  in horizontal_line()
122 static int check_quadratic(const SkDCubic& cubic, SkDCubic& reduction) {  in check_quadratic()  argument
123     double dx10 = cubic[1].fX - cubic[0].fX;  in check_quadratic()
124     double dx23 = cubic[2].fX - cubic[3].fX;  in check_quadratic()
125     double midX = cubic[0].fX + dx10 * 3 / 2;  in check_quadratic()
126     double sideAx = midX - cubic[3].fX;  in check_quadratic()
132     double dy10 = cubic[1].fY - cubic[0].fY;  in check_quadratic()
133     double dy23 = cubic[2].fY - cubic[3].fY;  in check_quadratic()
134     double midY = cubic[0].fY + dy10 * 3 / 2;  in check_quadratic()
135     double sideAy = midY - cubic[3].fY;  in check_quadratic()
141     reduction[0] = cubic[0];  in check_quadratic()
144     reduction[2] = cubic[3];  in check_quadratic()
148 static int check_linear(const SkDCubic& cubic,  in check_linear()  argument
150     if (!cubic.isLinear(0, 3)) {  in check_linear()
154     reduction[0] = cubic[0];  in check_linear()
155     reduction[1] = cubic[3];  in check_linear()
185 int SkReduceOrder::reduce(const SkDCubic& cubic, Quadratics allowQuadratics) {  in reduce()  argument
191         if (cubic[minX].fX > cubic[index].fX) {  in reduce()
194         if (cubic[minY].fY > cubic[index].fY) {  in reduce()
197         if (cubic[maxX].fX < cubic[index].fX) {  in reduce()
200         if (cubic[maxY].fY < cubic[index].fY) {  in reduce()
205         double cx = cubic[index].fX;  in reduce()
206         double cy = cubic[index].fY;  in reduce()
208                 SkTMax(fabs(cubic[minX].fX), fabs(cubic[minY].fY))));  in reduce()
215         if (approximately_equal_half(cx * inv, cubic[minX].fX * inv)) {  in reduce()
218         if (approximately_equal_half(cy * inv, cubic[minY].fY * inv)) {  in reduce()
224             return coincident_line(cubic, fCubic);  in reduce()
226         return vertical_line(cubic, fCubic);  in reduce()
229         return horizontal_line(cubic, fCubic);  in reduce()
231     int result = check_linear(cubic, minX, maxX, minY, maxY, fCubic);  in reduce()
236             && (result = check_quadratic(cubic, fCubic))) {  in reduce()
239     fCubic = cubic;  in reduce()
270     SkDCubic cubic;  in Cubic()  local
271     cubic.set(a);  in Cubic()
273     int order = reducer.reduce(cubic, kAllow_Quadratics);  in Cubic()