mirror of
https://github.com/SteamFramelyHomebrew/framely.git
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67 lines
2.7 KiB
C++
67 lines
2.7 KiB
C++
#pragma once
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#include <cstdint>
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#include <cstddef>
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#include <vector>
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#include <chrono>
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#include "geometry_math.h"
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struct NotificationPlacement {
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vr::HmdMatrix34_t transform{};
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float width=.32f,radius=0;
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};
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// Keep the compact toast at the upper right, but turn its front toward the eye.
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// Copying the headset rotation leaves a side-offset overlay facing past the user.
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inline bool notification_placement(const vr::HmdMatrix34_t& headset,float radius,NotificationPlacement& out){
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vr::HmdMatrix34_t head{};
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if(!dock_rigid_frame(headset,head)||!std::isfinite(radius)||radius<=0)return false;
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vr::HmdVector3_t normal{},head_up{{head.m[0][1],head.m[1][1],head.m[2][1]}};
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for(int r=0;r<3;r++){
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out.transform.m[r][3]=head.m[r][3]+head.m[r][0]*.24f+head.m[r][1]*.12f-head.m[r][2]*1.f;
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normal.v[r]=head.m[r][3]-out.transform.m[r][3];
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}
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if(!normalize_dock_vector(normal))return false;
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auto right=cross_dock_vector(head_up,normal);
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if(!normalize_dock_vector(right))return false;
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auto up=cross_dock_vector(normal,right);
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for(int r=0;r<3;r++){
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out.transform.m[r][0]=right.v[r];out.transform.m[r][1]=up.v[r];out.transform.m[r][2]=normal.v[r];
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}
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out.radius=radius;return true;
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}
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struct NotificationBounds {
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float x=0,y=0,width=0,height=0;
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bool visible() const {return width>0&&height>0;}
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};
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// BGRA rows are bottom-up after on_paint. Intersection rectangles use top-left
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// coordinates, so the alpha bounds must be flipped back before submitting the mask.
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inline NotificationBounds notification_bounds(const std::vector<uint8_t>& pixels,int width,int height,int scale){
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if(width<=0||height<=0||scale<=0||pixels.size()!=size_t(width)*height*4)return {};
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int left=width,low=height,right=-1,high=-1;
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for(int y=0;y<height;++y)for(int x=0;x<width;++x){
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if(!pixels[(size_t(y)*width+x)*4+3])continue;
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if(x<left)left=x;if(x>right)right=x;if(y<low)low=y;if(y>high)high=y;
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}
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if(right<left)return {};
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return {float(left)/scale,float(height-1-high)/scale,float(right-left+1)/scale,float(high-low+1)/scale};
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}
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// Preserve the intended button during a brief click with normal tracking jitter.
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// Deliberate movement and long holds cancel stabilization.
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struct NotificationClick {
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using Time=std::chrono::steady_clock::time_point;
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bool active=false,cancelled=false;int x=0,y=0;Time pressed{};
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void begin(int px,int py,Time now){active=true;cancelled=false;x=px;y=py;pressed=now;}
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bool hold(int px,int py,Time now){
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if(!active)return false;
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if(now-pressed>std::chrono::milliseconds(800)||std::hypot(float(px-x),float(py-y))>18.f)cancelled=true;
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return !cancelled;
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}
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bool release(int& px,int& py,Time now){
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bool stable=hold(px,py,now);if(stable){px=x;py=y;}active=false;return stable;
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}
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void clear(){active=false;cancelled=false;}
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};
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