void plAvBrainCritter::SightCone(float coneRad)
{
fSightConeAngle = coneRad;
// calculate the minimum dot product for the cone of sight (angle/2 vector dotted with straight ahead)
hsVector3 straightVector(1, 0, 0), viewVector(1, 0, 0), up(0, 1, 0);
hsQuat rotation(fSightConeAngle/2, &up);
viewVector = hsVector3(rotation.Rotate(&viewVector));
viewVector.Normalize();
fSightConeDotMin = straightVector * viewVector;
}
void ShaderSilhouetteSimple::findTangent(const unsigned int i)
{
gmVector3 ni, posi;
posi = position->getPosition(i);
ni = impInt->grad(i);
ni.normalize();
gmVector3 viewVector(*myCameraPosition - posi);
viewVector.normalize();
gmVector3 tangent = impInt->hess(i) * viewVector;
tangent = cross(ni, tangent);
if(tangent.lengthSquared() > gmEPSILON) tangent.normalize();
tangentAttr->setVector(i,tangent);
}
void GLWidget3D::inferRuleFromSketch() {
int face_index;
std::vector<glm::vec3> face_points;
// ワールド座標系でのカメラ座標
glm::vec3 cameraPos = camera.cameraPosInWorld();
// 視線ベクトル
glm::vec3 view_v1 = viewVector(strokes[0].points[0], camera.mvMatrix, camera.f(), camera.aspect());
// faceを取得
cga::Face face;
if (cga_system.hitFace(cameraPos, view_v1, face)) {
// strokeの3d座標を計算
for (int i = 0; i < strokes.size(); ++i) {
if (strokes[i].points3d.size() == strokes[i].points.size()) continue;
for (int k = 0; k < strokes[i].points.size(); ++k) {
strokes[i].points3d.push_back(unprojectByPlane(strokes[i].points[k], face.points[0], face.normals[0]));
}
}
// strokeから、ルールを探す
face.shape->findRule(strokes, sketch_step, &cga_system);
// CGAモデルを生成しなおす
cga_system.generateProposal();
// 描画する
cga_system.render(&renderManager, true);
}
strokes.clear();
update();
}