Error Handling and Build System Change

Release 0.7.5

SuperTest+

• Fix an integer underflows issue when line is wider than the console width in STPConsoleReporter.
• Add a smart text wrapper for the consoel reporter.
• Add test for free-slip utilities.

General fixes and improvement

Exception handling

• Simplify exception handling in some classes to ensure there's only one try-catch block in one function. If exception can be thrown out safely without the need to clear memory, try-catch block is removed.
• Avoid throwing exception in the destructor, and instead terminate the program.
• Replace exit(-1) with std::terminate().
• Add a new exception class STPInvalidEnvironment which is thrown when STPEnvironment is not validated at the constructors of STPChunkProvider, STPHeightfieldGenerator and STPermutationGenerator.
• Add numeric range check for functions in STPChunk.
• Add size check in STPMemoryPool and STPFreeSlipGenerator to make sure the numbers provided are positive.
• Add input value range check for STPFreeSlipTextureBuffer.

File system change

• Move free-slip utilites into a separate folder GPGPU/FreeSlip.
• Re-style include directories. Header should prefer using double quotes while sources prefer using angle brackets. Replace system header includes with angled brackets.
• Replace the following external libraries with imported package, and remove them from the External diectory:
  • glfw3
  • glm
  • OpenGL
  • SIMPLE

Out final goal is to replace all explicit include directories with CMake imported targets via CMake find_package().

• Change GLAD build type to share library. This is beneficial for sharing OpenGL contexts between the main engine and demo application.

Others

• Remove checker for disabled free-slip hydraulic erosion and return nullptr if so. It's generally un-safe and adds more overhead during run-time to check for null pointer.
• Use emplace_back() instead of push_back() for getRegion() in STPChunk.
• Address changes brought by SIMPLE v2.0.