feat(slam): add rtabmap_ros

2025-07-14 11:34:38 +08:00
parent 3b6641c1fb
commit 943ce5b06f
1635 changed files with 603092 additions and 0 deletions
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2014 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "tango-gl/quad.h"
+#include "tango-gl/util.h"
+
+namespace tango_gl {
+
+static const char kVertexShader[] =
+    "attribute vec4 vertex;\n"
+    "attribute vec2 inputTextureCoordinate;\n"
+    "varying vec2 textureCoordinate;\n"
+    "uniform mat4 mvp;\n"
+    "void main() {\n"
+    "  gl_Position = mvp*vertex;\n"
+    "  textureCoordinate = inputTextureCoordinate.xy;\n"
+    "}\n";
+
+static const char kFragmentShader[] =
+    "varying vec2 textureCoordinate;\n"
+    "uniform sampler2D inputTexture;\n"
+    "void main() {\n"
+    "  gl_FragColor = texture2D(inputTexture, textureCoordinate);\n"
+    "}\n";
+
+static const float vertices[] = {-0.5f, -0.5f, 0.5f, -0.5f,
+                                 -0.5f, 0.5f,  0.5f, 0.5f};
+
+static const GLfloat texture_coords[] = {0.0f, 1.0f, 1.0f, 1.0f,
+                                         0.0f, 0.0f, 1.0f, 0.0f, };
+
+Quad::Quad() {
+  shader_program_ = util::CreateProgram(kVertexShader, kFragmentShader);
+  if (!shader_program_) {
+    LOGE("Could not create program.");
+  }
+  uniform_mvp_mat_ = glGetUniformLocation(shader_program_, "mvp");
+  attrib_vertices_ = glGetAttribLocation(shader_program_, "vertex");
+  texture_coords_ =
+      glGetAttribLocation(shader_program_, "inputTextureCoordinate");
+  texture_handle = glGetUniformLocation(shader_program_, "inputTexture");
+  glGenBuffers(1, &vertex_buffer_);
+}
+
+Quad::~Quad() { glDeleteShader(shader_program_); }
+
+void Quad::SetTextureId(GLuint texture_id) { texture_id_ = texture_id; }
+
+void Quad::Render(const glm::mat4& projection_mat,
+                  const glm::mat4& view_mat) const {
+  glEnable(GL_CULL_FACE);
+  glEnable(GL_BLEND);
+  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+  glUseProgram(shader_program_);
+
+  glBindTexture(GL_TEXTURE_2D, texture_id_);
+  glUniform1i(texture_handle, 0);
+
+  // Calculate MVP matrix and pass it to shader.
+  glm::mat4 model_mat = GetTransformationMatrix();
+  glm::mat4 mvp_mat = projection_mat * view_mat * model_mat;
+  glUniformMatrix4fv(uniform_mvp_mat_, 1, GL_FALSE, glm::value_ptr(mvp_mat));
+
+  // Vertice binding
+  glEnableVertexAttribArray(attrib_vertices_);
+  glVertexAttribPointer(attrib_vertices_, 2, GL_FLOAT, GL_FALSE, 0, vertices);
+  glBindBuffer(GL_ARRAY_BUFFER, 0);
+
+  glEnableVertexAttribArray(texture_coords_);
+  glVertexAttribPointer(texture_coords_, 2, GL_FLOAT, GL_FALSE, 0,
+                        texture_coords);
+
+  glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+  glUseProgram(0);
+  glBindTexture(GL_TEXTURE_2D, 0);
+}
+
+}  // namespace tango_gl