hyzboy/ULRE
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

实现Gizmo3DMove三个轴都可以选

Browse Source
This commit is contained in:
hyzboy
2025-07-29 01:09:53 +08:00
parent 3c611be712
commit 24569ea36f
2 changed files with 30 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
example/Gizmo/Gizmo3DMove.cpp
View File

@@ -44,11 +44,13 @@ namespace
{
struct GizmoMoveAxis
{
MaterialInstance *mi; //材质实例
MeshComponent *cylinder; //圆柱
MeshComponent *cone; //圆锥
MeshComponent *square; //双轴调节正方形
};
MaterialInstance *pick_mi;
MeshComponent *sphere=nullptr;
GizmoMoveAxis axis[3]{}; //X,Y,Z 三个轴
@@ -69,9 +71,12 @@ namespace
void DuplicationComponents(SceneNode *node) const override
{
GizmoMoveNode *gmn=(GizmoMoveNode *)node;
if(!gmn)
return;
gmn->pick_mi=pick_mi;
#define DUPLICATION_COMPONENT(c) gmn->c=(MeshComponent *)(c->Duplication()); \
gmn->AttachComponent(gmn->c);
@@ -79,6 +84,7 @@ namespace
for(size_t i=0;i<3;i++)
{
gmn->axis[i].mi=axis[i].mi; // 复制材质实例
DUPLICATION_COMPONENT(axis[i].cylinder);
DUPLICATION_COMPONENT(axis[i].cone);
DUPLICATION_COMPONENT(axis[i].square);
@@ -101,13 +107,14 @@ namespace
CreateComponentInfo cci(this);
pick_mi=GetGizmoMI3D(GizmoColor::Yellow); //获取拾取材质实例
sphere=render_framework->CreateComponent<MeshComponent>(&cci,SpherePtr); //中心球
sphere->SetOverrideMaterial(GetGizmoMI3D(GizmoColor::White)); //白色
{
Transform tm;
GizmoMoveAxis *gma;
MaterialInstance *mi=nullptr;
const Vector3f one_scale(1);
const Vector3f square_scale(2);
@@ -115,73 +122,73 @@ namespace
{
gma=axis+size_t(AXIS::Z);
mi=GetGizmoMI3D(GizmoColor::Blue);
gma->mi=GetGizmoMI3D(GizmoColor::Blue);
tm.SetScale(cylinder_scale);
tm.SetTranslation(0,0,GIZMO_CYLINDER_OFFSET);
cci.mat=tm;
gma->cylinder=render_framework->CreateComponent<MeshComponent>(&cci,CylinderPtr); //Z 向上圆柱
gma->cylinder->SetOverrideMaterial(mi);
gma->cylinder->SetOverrideMaterial(gma->mi);
tm.SetScale(one_scale);
tm.SetTranslation(0,0,GIZMO_CONE_OFFSET);
cci.mat=tm;
gma->cone=render_framework->CreateComponent<MeshComponent>(&cci,ConePtr); //Z 向上圆锥
gma->cone->SetOverrideMaterial(mi);
gma->cone->SetOverrideMaterial(gma->mi);
tm.SetScale(square_scale);
tm.SetTranslation(GIZMO_TWO_AXIS_OFFSET,GIZMO_TWO_AXIS_OFFSET,0);
cci.mat=tm;
gma->square=render_framework->CreateComponent<MeshComponent>(&cci,SquarePtr);
gma->square->SetOverrideMaterial(mi);
gma->square->SetOverrideMaterial(gma->mi);
}
{
gma=axis+size_t(AXIS::X);
mi=GetGizmoMI3D(GizmoColor::Red);
gma->mi=GetGizmoMI3D(GizmoColor::Red);
tm.SetScale(cylinder_scale);
tm.SetRotation(AxisVector::Y,90);
tm.SetTranslation(GIZMO_CYLINDER_OFFSET,0,0);
cci.mat=tm;
gma->cylinder=render_framework->CreateComponent<MeshComponent>(&cci,CylinderPtr); //X 向右圆柱
gma->cylinder->SetOverrideMaterial(mi);
gma->cylinder->SetOverrideMaterial(gma->mi);
tm.SetScale(one_scale);
tm.SetTranslation(GIZMO_CONE_OFFSET,0,0);
cci.mat=tm;
gma->cone=render_framework->CreateComponent<MeshComponent>(&cci,ConePtr); //Z 向上圆锥
gma->cone->SetOverrideMaterial(mi);
gma->cone->SetOverrideMaterial(gma->mi);
tm.SetScale(square_scale);
tm.SetTranslation(0,GIZMO_TWO_AXIS_OFFSET,GIZMO_TWO_AXIS_OFFSET);
cci.mat=tm;
gma->square=render_framework->CreateComponent<MeshComponent>(&cci,SquarePtr);
gma->square->SetOverrideMaterial(mi);
gma->square->SetOverrideMaterial(gma->mi);
}
{
gma=axis+size_t(AXIS::Y);
mi=GetGizmoMI3D(GizmoColor::Green);
gma->mi=GetGizmoMI3D(GizmoColor::Green);
tm.SetScale(cylinder_scale);
tm.SetRotation(AxisVector::X,-90);
tm.SetTranslation(0,GIZMO_CYLINDER_OFFSET,0);
cci.mat=tm;
gma->cylinder=render_framework->CreateComponent<MeshComponent>(&cci,CylinderPtr); //X 向右圆柱
gma->cylinder->SetOverrideMaterial(mi);
gma->cylinder->SetOverrideMaterial(gma->mi);
tm.SetScale(one_scale);
tm.SetTranslation(0,GIZMO_CONE_OFFSET,0);
cci.mat=tm;
gma->cone=render_framework->CreateComponent<MeshComponent>(&cci,ConePtr); //Z 向上圆锥
gma->cone->SetOverrideMaterial(mi);
gma->cone->SetOverrideMaterial(gma->mi);
tm.SetScale(square_scale);
tm.SetTranslation(GIZMO_TWO_AXIS_OFFSET,0,GIZMO_TWO_AXIS_OFFSET);
cci.mat=tm;
gma->square=render_framework->CreateComponent<MeshComponent>(&cci,SquarePtr);
gma->square->SetOverrideMaterial(mi);
gma->square->SetOverrideMaterial(gma->mi);
}
}
@@ -200,16 +207,20 @@ namespace
cc->SetMouseRay(&ray,mouse_coord);
Matrix4f l2w=GetLocalToWorldMatrix();
Vector3f center=TransformPosition(l2w,Vector3f(0,0,0));
Vector3f start;
Vector3f end;
Vector3f p_ray,p_ls;
float dist;
float pixel_per_unit;
float center_ppu;
start=TransformPosition(l2w,Vector3f(0,0,0)); //将原点转换到世界坐标
center_ppu=cc->GetPixelPerUnit(center); //求原点坐标相对屏幕空间象素的缩放比
for(int i=0;i<3;i++)
{
end=TransformPosition(l2w,Vector3f((GIZMO_CONE_LENGTH+GIZMO_CYLINDER_HALF_LENGTH)*20,0,0));
start=TransformPosition(l2w,GetAxisVector(AXIS(i))*GIZMO_CENTER_SPHERE_RADIUS*center_ppu); //将轴的起点转换到世界坐标
end=TransformPosition(l2w,GetAxisVector(AXIS(i))*(GIZMO_CENTER_SPHERE_RADIUS+GIZMO_CONE_LENGTH+GIZMO_CYLINDER_HALF_LENGTH)*center_ppu);
//求射线与线段的最近点
ray.ClosestPoint(p_ray, //射线上的点
@@ -221,10 +232,10 @@ namespace
//求p_ls坐标相对屏幕空间象素的缩放比
pixel_per_unit=cc->GetPixelPerUnit(p_ls);
MaterialInstance *mi=GetGizmoMI3D(dist<GIZMO_CYLINDER_RADIUS*pixel_per_unit?GizmoColor::Yellow:GizmoColor::Red);
MaterialInstance *mi=dist<GIZMO_CYLINDER_RADIUS*pixel_per_unit?pick_mi:axis[i].mi;
axis[size_t(AXIS::X)].cylinder->SetOverrideMaterial(mi);
axis[size_t(AXIS::X)].cone->SetOverrideMaterial(mi);
axis[i].cylinder->SetOverrideMaterial(mi);
axis[i].cone->SetOverrideMaterial(mi);
//std::cout<<"Mouse: "<<mouse_coord.x<<","<<mouse_coord.y<<std::endl;
//std::cout<<"Ray(Ori): "<<ray.origin.x<<","<<ray.origin.y<<","<<ray.origin.z<<")"<<std::endl;

2
example/Gizmo/GizmoResource.h
View File

@@ -18,7 +18,7 @@ constexpr const COLOR gizmo_color[size_t(GizmoColor::RANGE_SIZE)]=
COLOR::BlenderAxisGreen,
COLOR::BlenderAxisBlue,
COLOR::BlenderYellow,
COLOR::GoldenYellow,
};
constexpr const float GIZMO_ARROW_LENGTH =10.0f; ///<箭头整体长度