diff options
Diffstat (limited to 'src/o3d/vertex_data.cpp')
-rw-r--r-- | src/o3d/vertex_data.cpp | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/src/o3d/vertex_data.cpp b/src/o3d/vertex_data.cpp index ea8c5fd..b05e382 100644 --- a/src/o3d/vertex_data.cpp +++ b/src/o3d/vertex_data.cpp @@ -2,21 +2,19 @@ using namespace engine::o3d; -VertexData VertexData::lerp(const VertexData& vd1, const VertexData& vd2, float s) { - (void) vd1; - (void) vd2; - (void) s; - return {}; +VertexData VertexData::lerp(const VertexData& vd1, const VertexData& vd2, float b0) { + return { + b0 * vd1.tx + (1.f - b0) * vd2.tx, + b0 * vd1.ty + (1.f - b0) * vd2.ty + }; } -VertexData VertexData::bilerp(const VertexData& vd1, const VertexData& vd2, const VertexData& vd3, float s, float t) { - (void) vd1; - (void) vd2; - (void) vd3; - (void) s; - (void) t; - return {}; +VertexData VertexData::bilerp(const VertexData& vd1, const VertexData& vd2, const VertexData& vd3, float b0, float b1) { + return { + b0 * vd1.tx + b1 * vd2.tx + (1.f - b0 - b1) * vd3.tx, + b0 * vd1.ty + b1 * vd2.ty + (1.f - b0 - b1) * vd3.ty + }; } -VertexData::VertexData() { +VertexData::VertexData(float tx, float ty) : tx{tx}, ty{ty} { } |