利用键盘左右键使图像左右移动，
glm::mat4 trans; trans = glm::translate(trans, glm::vec3(translation, 0.0f, 0.0f)); glUniformMatrix4fv(glGetUniformLocation(ourShader.ID, "transform"), 1, GL_FALSE, glm::value_ptr(trans));
1 void processInput(GLFWwindow* window) 2 { 3 if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) 4 glfwSetWindowShouldClose(window, true); 5 if (glfwGetKey(window, GLFW_KEY_LEFT) == GLFW_PRESS) 6 { 7 translation -= 0.001f; 8 if (translation <= -0.5f) 9 translation = -0.5f; 10 } 11 12 if (glfwGetKey(window, GLFW_KEY_RIGHT) == GLFW_PRESS) 13 { 14 translation += 0.001f; 15 if (translation >= 0.5f) 16 translation = 0.5f; 17 } 18 }
上下键使图像的两个纹理可见度比例上下调整
1 ourShader.setFloat("mixValue", mixValue); 2 void processInput(GLFWwindow* window) 3 { 4 if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) 5 glfwSetWindowShouldClose(window, true); 6 7 //用键盘上下键控制两个纹理的可见度比例 8 if (glfwGetKey(window, GLFW_KEY_UP) == GLFW_PRESS) 9 { 10 mixValue += 0.001f; 11 if (mixValue >= 1.0f) 12 mixValue = 1.0f; 13 } 14 if (glfwGetKey(window, GLFW_KEY_DOWN) == GLFW_PRESS) 15 { 16 mixValue -= 0.001f; 17 if (mixValue <= 0.0f) 18 mixValue = 0.0f; 19 } 20 }