#include<iostream><\/p>\n
using namespace std;
\nusing uint=unsigned int;<\/p>\n
struct vec2
\n{
\nfloat x,y;
\n};<\/p>\n
struct vec3
\n{
\nfloat x,y,z;
\n};<\/p>\n
\/**
\n* \u7b97\u51fa\u6307\u5b9a\u6570\u91cf\u7684\u629b\u7269\u7ebf\u9ad8\u5ea6\u503c
\n* @param count \u7ed3\u679c\u6570\u91cf
\n* @param start \u8d77\u59cb\u65f6\u95f4\u91cf\uff0c\u4e00\u822c\u4e3a-1
\n* @param end \u7ed3\u675f\u65f6\u95f4\u91cf\uff0c\u4e00\u822c\u4e3a+1
\n*\/
\nfloat *Parabolic(const uint count,const float time_start=-1,const float time_end=1)
\n{
\nif(count<=0)return(nullptr);<\/p>\n
float *result=new float[count];<\/p>\n
float rate;
\nfloat cur=time_start;
\nfloat total_time=time_end-time_start;<\/p>\n
for(uint i=0;i<count;i++)
\n{
\nrate=float(i)\/float(count);<\/p>\n
cur=time_start+rate*total_time;<\/p>\n
result[i]=1-cur*cur;<\/p>\n
cout<<“height[“<<i<<“] “<<result[i]<<endl;
\n}<\/p>\n
return result;
\n}<\/p>\n
\/**
\n* \u753b2D\u629b\u7269\u7ebf
\n* @param start \u8d77\u59cb\u70b9
\n* @param end \u7ed3\u675f\u70b9
\n* @param up \u5355\u4f4d\u5411\u4e0a\u91cf
\n* @param height \u9ad8\u5ea6\u503c
\n* @param count \u6570\u91cf
\n*\/
\nvoid Put2D(const vec2 &start,const vec2 &end,const vec2 &up,const float *height,const uint count)
\n{
\nvec2 total;
\nvec2 pos;
\nfloat rate;<\/p>\n
total.x=end.x-start.x;
\ntotal.y=end.y-start.y;<\/p>\n
cout<<“from “<<start.x<<“,”<<start.y<<” to “<<end.x<<“,”<<end.y<<endl;<\/p>\n
for(uint i=0;i<count;i++)
\n{
\nrate=float(i)\/float(count);<\/p>\n
pos.x=start.x+rate*total.x;
\npos.y=start.y+rate*total.y;<\/p>\n
pos.x+=height[i]*up.x;
\npos.y+=height[i]*up.y;<\/p>\n
cout<<i<<“: “<<pos.x<<“,”<<pos.y<<endl;
\n}
\n}<\/p>\n
\/**
\n* \u753b3D\u629b\u7269\u7ebf
\n* @param start \u8d77\u59cb\u70b9
\n* @param end \u7ed3\u675f\u70b9
\n* @param up \u5355\u4f4d\u5411\u4e0a\u91cf
\n* @param height \u9ad8\u5ea6\u503c
\n* @param count \u6570\u91cf
\n*\/
\nvoid Put3D(const vec3 &start,const vec3 &end,const vec3 &up,const float *height,const uint count)
\n{
\nvec3 total;
\nvec3 pos;
\nfloat rate;<\/p>\n
total.x=end.x-start.x;
\ntotal.y=end.y-start.y;
\ntotal.z=end.z-start.z;<\/p>\n
cout<<“from “<<start.x<<“,”<<start.y<<“,”<<start.z<<” to “<<end.x<<“,”<<end.y<<“,”<<end.z<<endl;<\/p>\n
for(uint i=0;i<count;i++)
\n{
\nrate=float(i)\/float(count);<\/p>\n
pos.x=start.x+rate*total.x;
\npos.y=start.y+rate*total.y;
\npos.z=start.z+rate*total.z;<\/p>\n
pos.x+=height[i]*up.x;
\npos.y+=height[i]*up.y;
\npos.z+=height[i]*up.z;<\/p>\n
cout<<i<<“: “<<pos.x<<“,”<<pos.y<<“,”<<pos.z<<endl;
\n}
\n}<\/p>\n
void Test2D(float *height,const uint count)
\n{
\nvec2 start,end,up;<\/p>\n
start.x=0;
\nstart.y=0;<\/p>\n
end.x=100;
\nend.y=0;<\/p>\n
up.x=0;
\nup.y=100;<\/p>\n
Put2D(start,end,up,height,count);
\n}<\/p>\n
void Test3D(float *height,const uint count)
\n{
\nvec3 start,end,up;<\/p>\n
start.x=0;
\nstart.y=0;
\nstart.z=0;<\/p>\n
end.x=100;
\nend.y=0;
\nend.z=100;<\/p>\n
up.x=0;
\nup.y=100;
\nup.z=0;<\/p>\n
Put3D(start,end,up,height,count);
\n}<\/p>\n
void main()
\n{
\nconstexpr uint count=10;<\/p>\n
float *height=Parabolic(count);<\/p>\n
Test2D(height,count);
\nTest3D(height,count);<\/p>\n
delete[] height;
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"
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