init

2026-03-13 11:24:41 +08:00
commit 04e2bb29c7
238 changed files with 29102 additions and 0 deletions
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+function plot_3d_grid_transparent(nx, ny, nz, dx, dy, dz, data)
+% 绘制半透明效果的三维网格
+% 输入参数：
+%   nx, ny, nz - 各方向的网格数
+%   dx, dy, dz - 各方向的网格尺寸向量
+%   data - 物理量数据，维度为(nx, ny, nz)
+
+% 计算每个网格的边界坐标
+x_edges = zeros(nx+1, 1);
+x_edges(1) = 0;
+for i = 1:nx
+    x_edges(i+1) = x_edges(i) + dx(i);
+end
+
+y_edges = zeros(ny+1, 1);
+y_edges(1) = 0;
+for i = 1:ny
+    y_edges(i+1) = y_edges(i) + dy(i);
+end
+
+z_edges = zeros(nz+1, 1);
+z_edges(1) = 0;
+for i = 1:nz
+    z_edges(i+1) = z_edges(i) + dz(i);
+end
+
+% 创建图形
+figure('Position', [100, 100, 1000, 800]);
+hold on;
+
+% 设置颜色映射
+colormap jet;
+caxis([min(data(:)), max(data(:))]);
+
+% 根据物理量值设置透明度
+% 值越大越不透明，值越小越透明
+data_min = min(data(:));
+data_max = max(data(:));
+data_range = data_max - data_min;
+
+for i = 1:nx
+    for j = 1:ny
+        for k = 1:nz
+            % 获取当前体素的边界
+            x_min = x_edges(i);
+            x_max = x_edges(i+1);
+            y_min = y_edges(j);
+            y_max = y_edges(j+1);
+            z_min = z_edges(k);
+            z_max = z_edges(k+1);
+            
+            % 获取当前体素的物理量值
+            value = data(i, j, k);
+            
+            % 根据值设置透明度（值越大越不透明）
+            % alpha_val = 0.3 + 0.6 * (value - data_min) / data_range;
+            alpha_val = 1;
+            
+            % 创建体素的8个顶点
+            vertices = [x_min, y_min, z_min;
+                       x_max, y_min, z_min;
+                       x_max, y_max, z_min;
+                       x_min, y_max, z_min;
+                       x_min, y_min, z_max;
+                       x_max, y_min, z_max;
+                       x_max, y_max, z_max;
+                       x_min, y_max, z_max];
+            
+            % 创建6个面的顶点索引
+            faces = [1 2 3 4;  % 底面
+                    5 6 7 8;   % 顶面
+                    1 2 6 5;   % 前面
+                    2 3 7 6;   % 右面
+                    3 4 8 7;   % 后面
+                    4 1 5 8];  % 左面
+            
+            % 绘制体素
+            patch('Vertices', vertices, 'Faces', faces, ...
+                  'FaceColor', 'flat', ...
+                  'FaceVertexCData', value, ...
+                  'CDataMapping', 'scaled', ...
+                  'FaceAlpha', alpha_val, ...
+                  'EdgeColor', 'none');
+        end
+    end
+end
+
+% 设置图形属性
+colorbar;
+xlabel('X');
+ylabel('Y');
+zlabel('Z');
+title('三维笛卡尔网格全充满物理量分布（透明度与数值相关）');
+axis equal;
+view(3);
+grid on;
+box on;
+
+% 光照设置
+lighting gouraud;
+light('Position', [1 1 1], 'Style', 'infinite');
+light('Position', [-1 -1 -1], 'Style', 'infinite');
+
+hold off;
+end