void CoreRectangleShape_Imp::DivideToTriangles()
{
auto vertexes = drawingArea.GetVertexes();
auto globalCenter = vertexes[0] + centerPosition;
for (auto& vert : vertexes)
{
vert -= globalCenter;
auto deg = vert.GetDegree();
deg += angle;
vert.SetDegree(deg);
vert += globalCenter;
}
auto uvs = uv.GetVertexes();
auto triangle1 = new CoreTriangleShape_Imp();
auto triangle2 = new CoreTriangleShape_Imp();
for (int j = 0; j < 3; ++j)
{
triangle1->SetPointByIndex(vertexes[j], j);
triangle1->SetUVByIndex(uvs[j], j);
triangle2->SetPointByIndex(vertexes[(j + 2) % 4], j);
triangle2->SetUVByIndex(uvs[(j + 2) % 4], j);
}
triangles.push_back(triangle1);
triangles.push_back(triangle2);
}
void CoreCircleShape_Imp::DivideToTriangles()
{
if (numberOfCorners < 3) return;
const float radInc = 360.0 / numberOfCorners;
const float outerRadius = outerDiameter / 2;
const float innerRadius = innerDiameter / 2;
float currentPosDeg = angle - 90;
float currentUVDeg = -90;
Vector2DF baseVector(0, -1);
baseVector.SetDegree(currentPosDeg);
Vector2DF uvCenter = { 0.5, 0.5 };
Vector2DF uvVector = { 0, -0.5 };
float ratio = innerDiameter / outerDiameter;
for (int i = 0; i < numberOfCorners; ++i)
{
Vector2DF currentPosVector = baseVector;
currentPosVector.SetDegree(currentPosDeg);
Vector2DF nextPosVector = currentPosVector;
auto nextPosDeg = nextPosVector.GetDegree();
nextPosDeg += radInc;
nextPosVector.SetDegree(nextPosDeg);
Vector2DF currentUVVector = uvVector;
currentUVVector.SetDegree(currentUVDeg);
Vector2DF nextUVVector = currentUVVector;
auto nextUVDeg = nextUVVector.GetDegree();
nextUVDeg += radInc;
nextUVVector.SetDegree(nextUVDeg);
std::array<Vector2DF, 4> vertexes = { position + currentPosVector*outerRadius, position + nextPosVector*outerRadius, position + nextPosVector*innerRadius, position + currentPosVector*innerRadius };
std::array<Vector2DF, 4> uvs = { uvCenter + currentUVVector, uvCenter + nextUVVector, uvCenter + nextUVVector*ratio, uvCenter + currentUVVector*ratio };
auto triangle1 = new CoreTriangleShape_Imp();
auto triangle2 = new CoreTriangleShape_Imp();
for (int j = 0; j < 3; ++j)
{
triangle1->SetPointByIndex(vertexes[j], j);
triangle1->SetUVByIndex(uvs[j], j);
triangle2->SetPointByIndex(vertexes[(j + 2) % 4], j);
triangle2->SetUVByIndex(uvs[(j + 2) % 4], j);
}
triangles.push_back(triangle1);
triangles.push_back(triangle2);
currentPosDeg += radInc;
currentUVDeg += radInc;
}
}