青岛建站费用,wordpress建企业商城,wordpress 不显示分类中的某篇文章,开发企业识别号网上查询一、需求#xff1a;基于苹果数据4*4矩阵数据#xff0c;转换成二维平面坐标系
二、解决方法与步骤#xff1a;
用到的方法#xff1a;
1、Matrix4的转化_Catirl的博客-CSDN博客
2、平面内直角坐标系中坐标旋转变换公式_Eric_Wangyz的博客-CSDN博客_坐标旋转变换公式
…一、需求基于苹果数据4*4矩阵数据转换成二维平面坐标系
二、解决方法与步骤
用到的方法
1、Matrix4的转化_Catirl的博客-CSDN博客
2、平面内直角坐标系中坐标旋转变换公式_Eric_Wangyz的博客-CSDN博客_坐标旋转变换公式
苹果数据效果
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}
1、4*4矩阵转成二维基于四维矩阵中心点求两端点坐标
# 墙体信息for wall in json_data[walls]:# 墙体中心坐标center_p np.array([wall[transform][-4], wall[transform][-2]])length wall[dimensions][0]transform01 abs(wall[transform][10])if wall[transform][10] 0:transform02 wall[transform][8]else:transform02 -wall[transform][8]# 基于中心点与四维矩阵获取起始点p1 center_p 0.5 * length * np.array([transform01, transform02])p2 center_p - 0.5 * length * np.array([transform01, transform02])
2、平面坐标系转化
cos abs(json_data[walls][0][transform][10])
sin -abs(json_data[walls][0][transform][8])# # # 坐标翻转
x1 p1[0] * cos - p1[1] * sin
y1 p1[1] * cos p1[0] * sin
p1 Point2D(int(round(x1 * 1000, 0)), int(round(y1 * 1000, 0)))x2 p2[0] * cos - p2[1] * sin
y2 p2[1] * cos p2[0] * sin
p2 Point2D(int(round(x2 * 1000, 0)), int(round(y2 * 1000, 0)))
3、整合代码
import json
from sympy.geometry import *PATH rD:\Desktop\room74.json
f open(PATH, rb)
j json.load(f)
f.close()def get_start_end_point(center_p, length, transform01, transform02, cos, sin):# 基于中心点与四维矩阵获取起始点p1 center_p 0.5 * length * np.array([transform01, transform02])p2 center_p - 0.5 * length * np.array([transform01, transform02])# # # 坐标翻转x1 p1[0] * cos - p1[1] * siny1 p1[1] * cos p1[0] * sinp1 Point2D(int(round(x1 * 1000, 0)), int(round(y1 * 1000, 0)))x2 p2[0] * cos - p2[1] * siny2 p2[1] * cos p2[0] * sinp2 Point2D(int(round(x2 * 1000, 0)), int(round(y2 * 1000, 0)))return p1, p2def get_wall_points(json_data):# 获取墙所有的坐标点wall_p_list []# 墙体信息cos abs(json_data[walls][0][transform][10])sin -abs(json_data[walls][0][transform][8])for wall in json_data[walls]:# 墙体中心坐标center_p np.array([wall[transform][-4], wall[transform][-2]])length wall[dimensions][0]transform01 abs(wall[transform][10])if wall[transform][10] 0:transform02 wall[transform][8]else:transform02 -wall[transform][8]p1, p2 get_start_end_point(center_p, length, transform01, transform02, cos, sin)wall_p_list.extend([p1, p2])return wall_p_list# 获取墙所有的坐标点
wall_points_list get_wall_points(json_data)print(wall_points_list )
4、结果
[[Point2D(760, -869), Point2D(-270, -869)], [Point2D(1989, -869), Point2D(937, -869)], [Point2D(-637, -869), Point2D(-1430, -869)]]
