Update README.md

README.md

@@ -1,12 +1,12 @@
 # TerraVisor
 
-TerraVisor is a 3D visualization tool designed for rendering and exploring terrain data. It leverages OpenGL for high-performance rendering and provides users with interactive features to manipulate and visualize complex terrain models.
+TerraVisor is a 3D visualization tool designed for rendering and exploring terrain data. It provides users with interactive features to manipulate and visualize complex terrain models from real height data.
 
 ## Features
 
-- **Real-Time Rendering**: Utilize the power of OpenGL for fast, real-time terrain visualization.
+- **Real Height Data**: Render height data from online services like NASA Earthdata, USGS National Map, or OpenTopography.
-- **Interactive Tools**: Rotate, zoom, and pan the terrain model for detailed exploration.
+- **Real-Time Tessellation**: Dynamically tessellate the height data based on terrain slopes and proximity to the camera.
-- **Custom Shaders**: Supports custom GLSL shaders for advanced rendering effects.
+- **Export Tessellated Terrain**: Use the tessellated terrain in your own projects by exporting the tessellated mesh.
 
 ## Installation
 
@@ -15,10 +15,17 @@ TerraVisor is a 3D visualization tool designed for rendering and exploring terra
 Before building TerraVisor, ensure that you have the following prerequisites installed on your system:
 
 - **Git**: Used for cloning the repository and managing source code.
+
 - **CMake**: Build system generator used to configure the project.
-- **Ninja**: Fast build system used to compile the project.
+
+- **Build System**: Needed by **CMake** to build and configure the project. This can be **Ninja**, **Make**, or any other build system you prefer.
+
+- **C++ Compiler**: Required for compiling the project. You can use compilers like **GCC** on Windows or Linux, or **MSVC** on Windows.
+
 - **vcpkg**: Package manager for acquiring C++ libraries.
 
+  - **Windows Users**: Ensure you have either the **Visual Studio Build Tools** or **Visual Studio** with the C++ desktop development installed on your machine.
+
 ### Installation Steps
 
 1. **Clone the Repository**: 
@@ -29,41 +36,37 @@ Before building TerraVisor, ensure that you have the following prerequisites ins
    cd terravisor
    ```
 
-2. **Install vcpkg**: 
+2. **Install Dependencies**: 
 
-   If you haven’t installed `vcpkg` yet, follow these steps to set it up:
+   Use `vcpkg` to install dependencies. From the vcpkg directory call:
    ```bash
-   git clone https://github.com/microsoft/vcpkg.git
+    ./vcpkg install glm glew glfw3 assimp freeimage
-   cd vcpkg
-   ./bootstrap-vcpkg.sh   # Use .\bootstrap-vcpkg.bat on Windows
-   ```
-   Optionally, integrate `vcpkg` with your system:
-   ```bash
-   ./vcpkg integrate install
    ```
 
-3. **Install Dependencies**: \
+3. **Configure the Project**: 
-   Use `vcpkg` to install dependencies:
+
+   Navigate back to the project root directory and configure the project using CMake and your build system of choice. For this example, we'll use Ninja:
    ```bash
-    ./vcpkg install glm glew glfw3 assimp
+   cmake -B build -S . -G Ninja --preset release
+   ```
+   If necessary, specify `VCPKG_ROOT` before configuring the project:
+   - On Linux/macOS:
+      ```bash
+      export VCPKG_ROOT=/path/to/vcpkg
+      ```
+   - On Windows:
+      ```bash
+      set VCPKG_ROOT=C:/path/to/vcpkg # If in powershell use $Env:VCPKG_ROOT = "C:/path/to/vcpkg"
       ```
 
-4. **Configure the Project**: 
+4. **Build the Project**: 
-
-   Navigate back to the project root directory and configure the project using CMake and Ninja. Be sure to specify the `vcpkg` toolchain file:
-   ```bash
-   cd ..
-   cmake -B build -S . -G Ninja -DCMAKE_TOOLCHAIN_FILE=./vcpkg/scripts/buildsystems/vcpkg.cmake
-   ```
-
-5. **Build the Project**: 
 
    Build the project using Ninja:
    ```bash
    cmake --build build
    ```
 
-6. **Run the Application**:
+5. **Run the Application**:
 
    Once the build process is complete, you can run the TerraVisor application:
    ```bash
@@ -76,7 +79,8 @@ GLEW - OpenGL Extension Wrangler Library \
 GLFW - OpenGL Framework \
 GLM - OpenGL Mathematics \
 ASSIMP - Open Asset Import Library \
-Dear ImGui
+FreeImage - Graphics Import Library \
+Dear ImGui - GUI framework
 
 ## Contact
 For questions or support, please reach out to Jack Christensen at <contact@jackmchristensen.com>