diff options
Diffstat (limited to 'bezier.cpp')
| -rw-r--r-- | bezier.cpp | 47 |
1 files changed, 47 insertions, 0 deletions
@@ -209,3 +209,50 @@ Mask_AddPointToCurve(mask *Mask, uint16 Index, real32 ratio) PointToAdd->TangentRight = -(NewPos - NewHandleRight); Mask->NumberOfPoints++; } + +static void +Mask_RasterizePoints(mask *Mask) +{ + Mask->NumberOfVerts = 0; + for (int i = 0; i < Mask->NumberOfPoints; i++) { + mask_point Point0 = Mask->Point[i]; + mask_point Point1 = Mask->Point[i+1]; + if (i+1 == Mask->NumberOfPoints) + Point1 = Mask->Point[0]; + + if (Point0.HandleBezier && Point1.HandleBezier) { + Bezier_CubicCalcPoints(Point0.Pos, Point0.Pos + Point0.TangentRight, Point1.Pos + Point1.TangentLeft, Point1.Pos, + Mask->TriangulatedPointCache, &Mask->NumberOfVerts); + } else if (Point0.HandleBezier) { + Bezier_CubicCalcPoints(Point0.Pos, Point0.Pos + Point0.TangentRight, Point1.Pos, Point1.Pos, + Mask->TriangulatedPointCache, &Mask->NumberOfVerts); + } else if (Point1.HandleBezier) { + Bezier_CubicCalcPoints(Point0.Pos, Point0.Pos, Point1.Pos + Point1.TangentLeft, Point1.Pos, + Mask->TriangulatedPointCache, &Mask->NumberOfVerts); + } else { + real32 *Data = (real32 *)Mask->TriangulatedPointCache + Mask->NumberOfVerts*3; + *(Data++) = Point0.Pos.x; + *(Data++) = Point0.Pos.y; + *(Data++) = 0; + // NOTE(fox): CubicCalcPoints sometimes misses generating the start + // point of the next path in the above two cases, so I'm making + // straight lines always add both points as a hotfix. This leads + // to cases of duplicate verts, but it doesn't seem like it harms + // the rendering in any way. + *(Data++) = Point1.Pos.x; + *(Data++) = Point1.Pos.y; + *(Data++) = 0; + Mask->NumberOfVerts += 2; + } + } +} + +void Mask_TriangulateAndRasterize(memory *Memory, project_layer *Layer, mask *Mask) +{ + if (!Mask->TriangulatedPointCache) { + Mask->TriangulatedPointCache = AllocateMemory(Memory, 50*1024, P_VectorPoints); + } + Mask_RasterizePoints(Mask); + + GL_RasterizeShape(Layer, Mask); +} |