Font cache

# Conflicts:
#	CMakeLists.txt

.gitea/workflows/buildtest.yml

@@ -0,0 +1,24 @@
+name: Run ReCI Build Test
+run-name: Run ReCI Build Test For ${{ gitea.repository }}.
+on: [push]
+
+jobs:
+  Explore-Gitea-Actions:
+    runs-on: ubuntu-22.04
+    env:
+      RECI_GIT: https://git.redacted.cc/maxine/ReCI
+      RECI: /RECI
+    steps:
+      - run: echo "The job was automatically triggered by a ${{ gitea.event_name }} event."
+      - run: echo "This job is now running on a ${{ runner.os }} server hosted by Gitea!"
+      - run: echo "The name of your branch is ${{ gitea.ref }} and your repository is ${{ gitea.repository }}."
+      - name: Check out repository code
+        uses: actions/checkout@v3
+      - run: echo "The ${{ gitea.repository }} repository has been cloned to the runner."
+      - run: echo "The workflow is now ready to run your tests on the runner."
+      - run: echo "Install toolchain and run ReCI build test"
+      - run: apt-get update && apt-get install -y git && git clone $RECI_GIT $RECI
+      - run: bash $RECI/scripts/setup_build_tools.sh
+      - run: bash reci/scripts/install_build_dependencies.sh
+      - run: bash $RECI/scripts/run_buildtest.sh ${{ gitea.repository }}
+      - run: echo "This job's status is ${{ job.status }}."

CMakeLists.txt

@@ -1,77 +1,96 @@
-cmake_minimum_required(VERSION 3.25)
-project(JGL
-    VERSION 1.0
-    LANGUAGES CXX
-)
-
-if (PROJECT_SOURCE_DIR STREQUAL PROJECT_BINARY_DIR)
-    message(FATAL_ERROR "In-source builds are not allowed")
-endif()
-
-set(CMAKE_CXX_STANDARD 20)
-if (WIN32)
-    set(CMAKE_CXX_FLAGS "-municode")
-endif(WIN32)
-
-set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
-
-
-# Enable Package Managers
-include(cmake/CPM.cmake)
-
-CPMAddPackage(
-        NAME J3ML
-        URL https://git.redacted.cc/josh/j3ml/archive/Prerelease-20.zip
-)
-
-CPMAddPackage(
-        NAME ReWindow
-        URL https://git.redacted.cc/Redacted/ReWindow/archive/vA0.2.19.zip
-)
-
-CPMAddPackage(
-        NAME GLAD
-        URL https://git.redacted.cc/Redacted/glad/archive/v2.1.zip
-)
-
-
-CPMAddPackage(
-        NAME LearnOpenGL
-        URL https://git.redacted.cc/josh/LearnOpenGL/archive/Prerelease-2.zip
-)
-
-file(GLOB_RECURSE HEADERS "include/*.h" "include/*.hpp")
-file(GLOB_RECURSE SOURCES "src/*.c"     "src/*.cpp"    )
-file(GLOB_RECURSE ASSETS  "content/*")
-
-add_library(JGL SHARED ${SOURCES}
-        include/JGL/JGL.h
-        src/JGL/JGL.cpp
-        include/LearnOpenGL/Shader.h
-        include/LearnOpenGL/Texture2D.h
-        include/JGL/Color3.h
-        include/JGL/Colors.h
-        include/JGL/Color4.h
-        )
-set_target_properties(JGL PROPERTIES LINKER_LANGUAGE CXX)
-
-find_package(OpenGL REQUIRED)
-find_package(GLUT REQUIRED)
-find_package(Freetype REQUIRED)
-
-add_executable(JGL_Demo main.cpp)
-set_target_properties(JGL_Demo PROPERTIES LINK_FLAGS "-Wl,-rpath,./lib")
-include_directories(${PROJECT_SOURCE_DIR}/include)
-include_directories(${OPENGL_INCLUDE_DIRS})
-include_directories(${GLUT_INCLUDE_DIRS})
-include_directories(${J3ML_SOURCE_DIR}/include)
-include_directories(${ReWindow_SOURCE_DIR}/include)
-include_directories(${glad_SOURCE_DIR}/include)
-
-target_include_directories(JGL PUBLIC ${LearnOpenGL_SOURCE_DIR}/include)
-target_link_libraries(JGL PUBLIC LearnOpenGL)
-
-target_include_directories(JGL PRIVATE ${FREETYPE_INCLUDE_DIRS})
-target_link_libraries(JGL PRIVATE ${FREETYPE_LIBRARIES})
-target_include_directories(JGL PRIVATE ${FREETYPE_INCLUDE_DIRS})
-target_link_libraries(JGL_Demo PUBLIC JGL ${OPENGL_LIBRARIES} ${GLUT_LIBRARIES} J3ML ReWindowLibrary GLEW glad)
+cmake_minimum_required(VERSION 3.25)
+project(JGL
+    VERSION 1.0
+    LANGUAGES CXX
+)
+
+if (PROJECT_SOURCE_DIR STREQUAL PROJECT_BINARY_DIR)
+    message(FATAL_ERROR "In-source builds are not allowed")
+endif()
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+
+# Enable Package Managers
+include(cmake/CPM.cmake)
+
+CPMAddPackage(
+        NAME J3ML
+        URL https://git.redacted.cc/josh/j3ml/archive/Release-2.2.zip
+)
+
+CPMAddPackage(
+        NAME ReWindow
+        URL https://git.redacted.cc/Redacted/ReWindow/archive/Prerelease-3.zip
+)
+
+CPMAddPackage(
+        NAME GLAD
+        URL https://git.redacted.cc/Redacted/glad/archive/v2.1ext_mt.zip
+)
+
+CPMAddPackage(
+        NAME jlog
+        URL https://git.redacted.cc/josh/jlog/Prerelease-9.zip
+)
+
+CPMAddPackage(
+        NAME Event
+        URL https://git.redacted.cc/josh/Event/archive/Release-6.zip
+)
+if (WIN32)
+    #CPMAddPackage(
+            #NAME harfbuzz
+            #URL https://github.com/harfbuzz/harfbuzz/archive/refs/tags/9.0.0.zip
+    #)
+
+    CPMAddPackage(
+            NAME freetype
+            URL https://github.com/freetype/freetype/archive/refs/tags/VER-2-13-2.zip
+    )
+endif()
+
+file(COPY "assets" DESTINATION "${PROJECT_BINARY_DIR}")
+file(GLOB_RECURSE ASSETS  "assets/*")
+file(GLOB_RECURSE HEADERS "include/*.h" "include/*.hpp")
+file(GLOB_RECURSE SOURCES "src/*.c"     "src/*.cpp"    )
+
+find_package(OpenGL REQUIRED)
+
+if (UNIX AND NOT APPLE)
+    find_package(Freetype REQUIRED)
+    add_library(JGL SHARED ${SOURCES})
+endif()
+
+if (WIN32)
+    add_library(JGL STATIC ${SOURCES})
+endif()
+
+set_target_properties(JGL PROPERTIES LINKER_LANGUAGE CXX)
+
+target_include_directories(JGL PUBLIC
+        ${PROJECT_SOURCE_DIR}/include
+        ${OPENGL_INCLUDE_DIRS}
+        ${J3ML_SOURCE_DIR}/include
+        ${Event_SOURCE_DIR}/include
+        ${ReWindow_SOURCE_DIR}/include
+        ${glad_SOURCE_DIR}/include
+        ${jlog_SOURCE_DIR}/include
+)
+
+add_executable(JGL_Demo main.cpp)
+#set_target_properties(JGL_Demo PROPERTIES LINK_FLAGS "-Wl,-rpath,./lib")
+
+if (UNIX AND NOT APPLE)
+    target_include_directories(JGL PRIVATE ${FREETYPE_INCLUDE_DIRS})
+    target_link_libraries(JGL PRIVATE ${FREETYPE_LIBRARIES})
+    target_link_libraries(JGL PUBLIC ${OPENGL_LIBRARIES} J3ML ReWindowLibrary glad jlog Event)
+endif()
+
+if (WIN32)
+    target_include_directories(JGL PRIVATE ${freetype_SOURCE_DIR}/include)
+    target_link_libraries(JGL PRIVATE freetype)
+    target_link_libraries(JGL PUBLIC ${OPENGL_LIBRARIES} J3ML ReWindowLibrary glad jlog Event)
+endif()
+
+target_link_libraries(JGL_Demo PUBLIC JGL)

README.md

@@ -8,4 +8,5 @@
 # Non-Goals
 * Full Rendering Engine
 * OpenGL/Vulkan Wrapper
-* Asset Loading & Management
+* Asset Loading & Management
+

include/JGL/FontCache.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include <vector>
+#include <glad/glad.h>
+
+namespace JGL {
+    class CachedGlyph;
+    class CachedFont;
+    class FontCache;
+}
+
+class JGL::CachedGlyph {
+private:
+    GLuint texture = 0;
+    char character;
+public:
+    int x2offset = 0, y2offset = 0, w = 0, h = 0;
+    float advanceX = 0, advanceY = 0;
+
+    //CachedGlyph(GLuint texture_id, char c);
+    CachedGlyph(GLuint texture_id, char c, float x2o, float y2o, float w, float h, float advX, float advY);
+    char getCharacter();
+    const GLuint* getTexture();
+};
+
+class JGL::CachedFont {
+private:
+    std::vector<CachedGlyph*> glyphs{};
+    unsigned int font_size = 0;
+    unsigned int font_index = 0;
+public:
+    void appendGlyph(CachedGlyph* glyph);
+    void eraseGlyph(CachedGlyph* glyph);
+    void eraseGlyph(char c);
+    void eraseGlyph(GLuint texture_id);
+    unsigned int getFontSize();
+    unsigned int getFontIndex();
+    CachedGlyph* getGlyph(char c);
+    std::vector<CachedGlyph*>* getGlyphs();
+    CachedFont(unsigned int font_size, unsigned int font_index);
+};
+
+class JGL::FontCache {
+private:
+    std::vector<CachedFont*> cachedFonts = {};
+public:
+    std::vector<CachedFont*>* getFonts();
+    CachedFont* getFont(unsigned int font_size, unsigned int font_index);
+    void appendFont(CachedFont* font);
+    void newFont(unsigned int font_size, unsigned int font_index);
+    void eraseFont(CachedFont* font);
+    void purgeCache();
+};

include/JGL/JGL.h

@@ -3,18 +3,16 @@
 //
 #pragma once
 
-#include <J3ML/LinearAlgebra.h>
-#include <J3ML/LinearAlgebra/Vector2.h>
-#include <J3ML/LinearAlgebra/Vector3.h>
 #include <string>
 #include <iostream>
 #include <JGL/Color3.h>
+#include <JGL/FontCache.h>
+#include <J3ML/LinearAlgebra.h>
+#include <J3ML/LinearAlgebra/Vector2.h>
+#include <J3ML/LinearAlgebra/Vector3.h>
 #include <J3ML/Geometry/Sphere.h>
-#include <J3ML/Geometry/OBB.h>
 #include <J3ML/Geometry/Capsule.h>
-#include <J3ML/Geometry/Plane.h>
 #include <J3ML/Geometry/TriangleMesh.h>
-
 // OpenGL Wrapper for rendering 2D graphics primitives in both a 2D and 3D context
 namespace JGL {
 
@@ -52,9 +50,11 @@ namespace JGL {
     };
 
     bool InitTextEngine();
+    inline FontCache fontCache;
+    int LoadFont(const std::string& font_path);
 
+    void UnloadFont(int font_index);
     // TODO: implement correct coloring
-    using J3ML::u32;
 
     namespace J2D {
         void DrawPixel2D(const Color3 &color, const Vector2 &coordinates);
@@ -71,7 +71,7 @@ namespace JGL {
         void FillTexturedPolygon2D();
         void DrawSprite2D();
         void DrawPartialSprite2D();
-        void DrawString2D(const Color3& color, std::string text, float x, float y, float scale, u32 size = 16);
+        void DrawString2D(const Color3& color, std::string text, float x, float y, float scale, u32 size, unsigned int font_index);
         void FillRect2D(const Color3 &color, const Vector2 &pos, const Vector2 &size);
         void OutlineRect2D       ( const Color3& color, const Vector2& pos, const Vector2& size, float thickness = 1);
         void FillRoundedRect2D   (const Color3& color, const Vector2& pos, const Vector2& size, float radius);
@@ -90,7 +90,7 @@ namespace JGL {
         void WireframeCapsule3D(const Color3& color, const Capsule& cap, float thickness = 1);
         void FillTriangleMesh3D(const Color3& color, const TriangleMesh& mesh);
         void WireframeTriangleMesh3D(const Color3& color, const TriangleMesh& mesh, float thickness = 1);
-        void DrawString3D(const Color3& color, const std::string& text, const Vector3& pos, float scale, u32 size = 12);
+        void DrawString3D(const Color3& color, const std::string& text, const Vector3& pos, float scale, u32 size, unsigned int font_index);
 
         void DrawMatrixGizmo     (const Matrix3x3&, const Vector3&);
         void DrawMatrixGizmo     (const Matrix4x4&);

main.cpp

@@ -1,18 +1,11 @@
-//#include <GL/glew.h>
 #include <glad/glad.h>
 #include <JGL/JGL.h>
 #include <rewindow/types/window.h>
-#include <iostream>
-#include <LearnOpenGL/Shader.h>
 #include <JGL/Colors.h>
 #include <J3ML/LinearAlgebra/Vector2.h>
 
 using J3ML::LinearAlgebra::Vector2;
 
-#if defined(_WIN32) || defined(_WIN64)
-#include <windows.h>
-#endif
-
 struct Character
 {
     unsigned int TextureID; // ID handle of the glyph texture
@@ -23,21 +16,6 @@ struct Character
 
 std::map<char, Character> Characters;
 GLuint VAO, VBO;
-const std::string vertexShader = "attribute vec4 coord;\n"
-                                 "varying vec2 texpos;\n"
-                                 "\n"
-                                 "void main(void) {\n"
-                                 "  gl_Position = vec4(coord.xy, 0, 1);\n"
-                                 "  texpos = coord.zw;\n"
-                                 "}\n"
-                                 "";
-const std::string fragmentShader = "varying vec2 texpos;\n"
-                                   "uniform sampler2D tex;\n"
-                                   "uniform vec4 color;\n"
-                                   "\n"
-                                   "void main(void) {\n"
-                                   "  gl_FragColor = vec4(1, 1, 1, texture2D(tex, texpos).a) * color;\n"
-                                   "}";
 
 using J3ML::LinearAlgebra::Matrix4x4;
 
@@ -48,20 +26,17 @@ struct point {
     GLfloat t;
 };
 
+int FreeSans;
+int Jupiteroid;
+
 class JGLDemoWindow : public ReWindow::RWindow
 {
 public:
-    LearnOpenGL::Shader shader;
 
     JGLDemoWindow() : ReWindow::RWindow() {}
-    JGLDemoWindow(const std::string& title, int width, int height) :
-            ReWindow::RWindow(title, width, height)
-    {
+    JGLDemoWindow(const std::string& title, int width, int height) : ReWindow::RWindow(title, width, height){}
 
-    }
-
-    void initGL()
-    {
+    void initGL() {
         gladLoadGL();
 
         glMatrixMode(GL_PROJECTION);
@@ -76,14 +51,14 @@ public:
         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
         glEnable(GL_TEXTURE_2D);
 
-        JGL::InitTextEngine();
+         JGL::InitTextEngine();
+         FreeSans = JGL::LoadFont("assets/fonts/FreeSans.ttf");
+         Jupiteroid = JGL::LoadFont("assets/fonts/Jupiteroid.ttf");
     }
 
 
-    void display()
-    {
+    void display() {
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
         glMatrixMode(GL_PROJECTION);
         glLoadIdentity();
         glOrtho(0, getSize().x, getSize().y, 0, -1, 1);
@@ -99,15 +74,13 @@ public:
                         {105, 100}
                 };
         JGL::J2D::FillTriangle2D(JGL::Colors::Yellow, tri);
-
-
-        JGL::J3D::DrawString3D(JGL::Colors::White, "JGL Sample Text", {1, -120, 0.5f}, 2.f);
-        JGL::J2D::DrawString2D(JGL::Colors::Green, "William J. Tomasine II ", 0.f, -120.f, 1.f);
-
         JGL::J2D::DrawLine2D(JGL::Colors::Greens::DarkGreen, {10, 10}, {200, 300});
         JGL::J3D::DrawLine3D(JGL::Colors::Red, {0,0,0}, {1,0,0});
         JGL::J3D::DrawLine3D(JGL::Colors::Red, {0,0,0}, {1,0,0});
 
+        JGL::J3D::DrawString3D(JGL::Colors::Red, "JGL Sample Text", {1, -32, 0.5f}, 1.f, 32, FreeSans);
+        JGL::J2D::DrawString2D(JGL::Colors::Green, "Jupiteroid Font", 0.f, -48.f, 1.f, 16, Jupiteroid);
+
         //glFlush();
     }
 
@@ -128,7 +101,7 @@ int main(int argc, char** argv)
     window->setRenderer(RenderingAPI::OPENGL);
     window->Open();
     window->initGL();
-    window->setResizable(true);
+    window->setResizable(false);
     while (window->isAlive())
     {
         window->pollEvents();

reci/scripts/install_build_dependencies.sh

@@ -0,0 +1,7 @@
+source $RECI/shlib/info.sh
+
+INFO "Installing build dependencies for JGL"
+GROUP="Install build dependencies" RUN '
+apt-get install -yq libgl1-mesa-dev libfreetype-dev
+'
+

src/FontCache.cpp

@@ -0,0 +1,119 @@
+#include <JGL/FontCache.h>
+
+using namespace JGL;
+
+char CachedGlyph::getCharacter() {
+    return character;
+}
+
+const GLuint* CachedGlyph::getTexture() {
+    return &texture;
+}
+
+CachedGlyph::CachedGlyph(GLuint texture_id, char c, float x2offset, float y2offset, float w, float h, float advanceX, float advanceY) {
+    texture = texture_id;
+    character = c;
+    this->x2offset = x2offset;
+    this->y2offset = y2offset;
+    this->w = w;
+    this->h = h;
+    this->advanceX = advanceX;
+    this->advanceY = advanceY;
+}
+
+void JGL::CachedFont::appendGlyph(JGL::CachedGlyph* glyph) {
+    glyphs.push_back(glyph);
+}
+
+unsigned int JGL::CachedFont::getFontSize() {
+    return font_size;
+}
+
+unsigned int JGL::CachedFont::getFontIndex() {
+    return font_index;
+}
+
+CachedGlyph* JGL::CachedFont::getGlyph(char c) {
+    for (const auto& g : glyphs)
+        if (c == g->getCharacter())
+            return g;
+    return nullptr;
+}
+
+CachedFont::CachedFont(unsigned int font_size, unsigned int font_index) {
+    this->font_size = font_size;
+    this->font_index = font_index;
+}
+
+void CachedFont::eraseGlyph(CachedGlyph* glyph) {
+    if (glyph == nullptr)
+        return;
+
+    for (int i = 0; i < glyphs.size(); i++)
+        if (glyphs[i] == glyph)
+            glDeleteTextures(1, glyphs[i]->getTexture()),
+            delete glyphs[i],
+            glyphs.erase(glyphs.begin() + i);
+}
+
+void CachedFont::eraseGlyph(char c) {
+    for (int i = 0; i < glyphs.size(); i++)
+        if (glyphs[i]->getCharacter() == c)
+            glDeleteTextures(1, glyphs[i]->getTexture()),
+            delete glyphs[i],
+            glyphs.erase(glyphs.begin() + i);
+}
+
+void CachedFont::eraseGlyph(GLuint texture_id) {
+    for (int i = 0; i < glyphs.size(); i++)
+        if (glyphs[i]->getTexture() == &texture_id)
+            glDeleteTextures(1, glyphs[i]->getTexture()),
+            delete glyphs[i],
+            glyphs.erase(glyphs.begin() + i);
+}
+
+std::vector<CachedGlyph*>* CachedFont::getGlyphs() {
+    return &glyphs;
+}
+
+void FontCache::appendFont(CachedFont* font) {
+    cachedFonts.push_back(font);
+}
+
+void FontCache::newFont(unsigned int font_size, unsigned int font_index) {
+    auto* font = new CachedFont(font_size, font_index);
+    cachedFonts.push_back(font);
+}
+
+void FontCache::eraseFont(CachedFont* font) {
+    for (int i = 0; i < cachedFonts.size(); i++) {
+        if (cachedFonts[i] == font) {
+            for (auto& g: *cachedFonts[i]->getGlyphs())
+                cachedFonts[i]->eraseGlyph(g);
+
+            delete cachedFonts[i];
+            cachedFonts.erase(cachedFonts.begin() + i);
+        }
+    }
+}
+
+void FontCache::purgeCache() {
+    //Remove every font from the cache.
+    for (const auto& font : cachedFonts)
+        eraseFont(font);
+    cachedFonts = {};
+}
+
+std::vector<CachedFont*>* FontCache::getFonts() {
+    return &cachedFonts;
+}
+
+CachedFont* FontCache::getFont(unsigned int font_size, unsigned int font_index) {
+    if (cachedFonts.empty())
+        return nullptr;
+
+    for (auto* f : cachedFonts)
+        if (f->getFontIndex() == font_index && f->getFontSize() == font_size)
+            return f;
+    return nullptr;
+}

src/JGL.cpp

@@ -0,0 +1,379 @@
+//
+// Created by dawsh on 1/17/24.
+//
+
+#include <vector>
+#include <glad/glad.h>
+#include <JGL/JGL.h>
+#include <JGL/Color3.h>
+#if __linux__
+    #include <freetype2/ft2build.h>
+    #include FT_FREETYPE_H
+#endif
+#if _WIN32
+    #include <ft2build.h>
+    #include FT_FREETYPE_H
+#endif
+
+GLuint program;
+namespace JGL
+{
+    FT_Library ft;
+
+    struct Font {
+        int index = 0;
+        FT_Face face;
+    };
+
+    std::vector<Font> faces;
+
+    using namespace J3ML;
+    bool InitTextEngine() {
+        if (FT_Init_FreeType(&ft))
+            return true;
+        return false;
+    }
+
+    int LoadFont(const std::string &font_path) {
+        if (ft == nullptr)
+            return -1;
+
+        Font font;
+        if (FT_New_Face(ft, font_path.c_str(), 0, &font.face)) {
+            std::cout << "Error::FREETYPE: Failed to load font!" << std::endl;
+            return -1;
+        }
+
+        unsigned int newIndex = 0;
+            for (const auto& f : faces)
+                if (f.index >= newIndex)
+                    newIndex = f.index + 1;
+
+        font.index = newIndex;
+        faces.push_back(font);
+        std::cout << "Loaded font from " << font_path << " with index " << newIndex << std::endl;
+        return newIndex;
+    }
+
+    void UnloadFont(int font_index) {
+        for (int i = 0; i < faces.size(); i++)
+            if (faces[i].index == font_index)
+                FT_Done_Face(faces[i].face),
+                faces.erase(faces.begin() + i);
+    }
+
+    namespace J2D {
+        void FillRect2D(const Color3 &color, const Vector2 &pos, const Vector2 &size) {
+            auto vp_pos = pos;
+            auto vp_size = size;
+            glBegin(GL_QUADS);
+            glColor3f(color.r / 255.f, color.g / 255.f, color.b / 255.f);
+            glVertex2f(vp_pos.x, vp_pos.y);
+            glVertex2f(vp_pos.x, vp_pos.y + vp_size.y);
+            glVertex2f(vp_pos.x + vp_size.x, vp_pos.y + vp_size.y);
+            glVertex2f(vp_pos.x + vp_size.x, vp_pos.y);
+            glEnd();
+        }
+
+        void OutlineRect2D(const Color3 &color, const Vector2 &pos, const Vector2 &size, float thickness) {
+            auto vp_pos = pos;
+            auto vp_size = size;
+            glBegin(GL_LINE_LOOP);
+            glLineWidth(thickness);
+            glColor3f(color.r, color.g, color.b);
+            glVertex2f(vp_pos.x, vp_pos.y);
+            glVertex2f(vp_pos.x, vp_pos.y + vp_size.y);
+            glVertex2f(vp_pos.x + vp_size.x, vp_pos.y + vp_size.y);
+            glVertex2f(vp_pos.x + vp_size.x, vp_pos.y);
+            glEnd();
+        }
+
+        void DrawLine2D(const Color3 &color, const Vector2 &A, const Vector2 &B, float thickness) {
+            auto vp_a = A;
+            auto vp_b = B;
+
+            glBegin(GL_LINES);
+            glLineWidth(thickness);
+            glColor3f(color.r, color.g, color.b);
+            glVertex2f(vp_a.x, vp_a.y);
+            glVertex2f(vp_b.x, vp_b.y);
+            glEnd();
+
+        }
+
+        void DrawLine2D(const Color3 &color, float x, float y, float w, float h, float thickness) {
+            DrawLine2D(color, {x, y}, {w, h}, thickness);
+        }
+
+        void DrawPixel2D(const Color3 &color, float x, float y) {
+            DrawPixel2D(color, {x, y});
+        }
+
+        void DrawPixel2D(const Color3 &color, const Vector2 &coordinates) {
+            auto vp_pos = coordinates;
+            glBegin(GL_POINT);
+            glColor3f(color.r, color.g, color.b);
+            glVertex2f(vp_pos.x, vp_pos.y);
+            glEnd();
+        }
+
+        void
+        OutlineCircle2D(const Color3 &color, const Vector2 &center, float radius, int subdivisions, float thickness) {
+            glBegin(GL_LINE_LOOP);
+            GLfloat angle;
+            glColor3f(color.r, color.g, color.b);
+            float step = (2.f * M_PI) / (float) subdivisions;
+            for (angle = 0.0f; angle < (2.f * M_PI); angle += step) {
+                GLfloat x = radius * sin(angle);
+                GLfloat y = radius * cos(angle);
+                x += center.x;
+                y += center.y;
+                glVertex2f(x, y);
+            }
+            glEnd();
+        }
+
+        void FillCircle2D(const Color3 &color, const Vector2 &center, float radius, int subdivisions) {
+            glBegin(GL_POLYGON);
+            GLfloat angle;
+            glColor3f(color.r, color.g, color.b);
+            float step = (2.f * M_PI) / (float) subdivisions;
+            for (angle = 0.0f; angle < (2.f * M_PI); angle += step) {
+                GLfloat x = radius * sin(angle);
+                GLfloat y = radius * cos(angle);
+                x += center.x;
+                y += center.y;
+                glVertex2f(x, y);
+            }
+            glEnd();
+        }
+
+        void OutlineTriangle2D(const Color3 &color, const Triangle2D &tri) {
+            glBegin(GL_LINE_LOOP);
+            glColor3f(color.r / 255.f, color.g / 255.f, color.b / 255.f);
+            glVertex2f(tri.A.x, tri.A.y);
+            glVertex2f(tri.B.x, tri.B.y);
+            glVertex2f(tri.C.x, tri.C.y);
+            glEnd();
+        }
+
+        void FillTriangle2D(const Color3 &color, const Triangle2D &tri) {
+            glBegin(GL_LINE_LOOP);
+            glColor3f(color.r / 255.f, color.g / 255.f, color.b / 255.f);
+            glVertex2f(tri.A.x, tri.A.y);
+            glVertex2f(tri.B.x, tri.B.y);
+            glVertex2f(tri.C.x, tri.C.y);
+            glEnd();
+        }
+
+        void DrawString2D(const Color3& color, std::string text, float x, float y, float scale, u32 size, unsigned int font_index) {
+            glUseProgram(0); // Fixed-function pipeline.
+
+            Font font{};
+            CachedFont* cachedFont = fontCache.getFont(size, font_index);
+
+            //If the font doesn't exist in the cache yet.
+            if (!cachedFont) {
+                fontCache.newFont(size, font_index);
+                cachedFont = fontCache.getFont(size, font_index);
+            }
+
+            //Set up the regular font.
+            for (const auto& f : faces)
+                if (f.index == font_index)
+                    font = f;
+            if (font.face == nullptr)
+                return;
+
+            GLfloat currentColor[4];
+            glGetFloatv(GL_CURRENT_COLOR, currentColor);
+
+            glColor4f(color.r / 255.f, color.g / 255.f, color.b / 255.f, 1.0f);
+
+            FT_Set_Pixel_Sizes(font.face, 0, size);
+
+            std::vector<GLuint> textures(text.length());
+
+            glEnable(GL_BLEND);
+            glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+            glEnable(GL_TEXTURE_2D);
+
+            //For each character
+            for (int i = 0; i < text.length(); i++) {
+                float x2, y2, w, h;
+                //If the font is in the cache already.
+                if (cachedFont->getGlyph(text.c_str()[i])) {
+                    CachedGlyph* glyph = cachedFont->getGlyph(text.c_str()[i]);
+
+                    glBindTexture(GL_TEXTURE_2D, *glyph->getTexture());
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
+
+                    x2 = x + glyph->x2offset * scale;
+                    y2 = -y - glyph->y2offset * scale; // Adjust y-coordinate
+                    w = glyph->w * scale;
+                    h = glyph->h * scale;
+                    x += glyph->advanceX * scale;
+                    y += glyph->advanceY * scale;
+
+                } else {
+                    if (FT_Load_Char(font.face, text.c_str()[i], FT_LOAD_RENDER))
+                        continue;
+
+                    FT_GlyphSlot g = font.face->glyph;
+                    glGenTextures(1, &textures.at(i));
+                    glBindTexture(GL_TEXTURE_2D, textures[i]);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
+                    glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, g->bitmap.width, g->bitmap.rows, 0, GL_ALPHA, GL_UNSIGNED_BYTE, g->bitmap.buffer);
+
+                    x2 = x + g->bitmap_left * scale;
+                    y2 = -y - g->bitmap_top * scale; // Adjust y-coordinate
+                    w = g->bitmap.width * scale;
+                    h = g->bitmap.rows * scale;
+                    x += (g->advance.x >> 6) * scale;
+                    y += (g->advance.y >> 6) * scale;
+                    cachedFont->appendGlyph(new CachedGlyph(textures.at(i), text.c_str()[i], g->bitmap_left, g->bitmap_top, g->bitmap.width, g->bitmap.rows, (g->advance.x >> 6), (g->advance.y >> 6)));
+                }
+
+                glBegin(GL_TRIANGLES);
+
+                glTexCoord2f(0, 0);
+                glVertex2f(x2, y2);
+
+                glTexCoord2f(0, 1);
+                glVertex2f(x2, y2 + h);
+
+                glTexCoord2f(1, 1);
+                glVertex2f(x2 + w, y2 + h);
+
+                glTexCoord2f(0, 0);
+                glVertex2f(x2, y2);
+
+                glTexCoord2f(1, 1);
+                glVertex2f(x2 + w, y2 + h);
+
+                glTexCoord2f(1, 0);
+                glVertex2f(x2 + w, y2);
+
+                glEnd();
+            }
+
+            //for (unsigned int& texture : textures)
+            //glDeleteTextures(1, &texture);
+
+            glDisable(GL_TEXTURE_2D);
+            glDisable(GL_BLEND);
+            glBindTexture(GL_TEXTURE_2D, 0); // Unbind texture
+            glColor4f(currentColor[0], currentColor[1], currentColor[2], currentColor[3]); //Set draw color back to whatever it was before.
+        }
+    }
+
+    namespace J3D
+    {
+        void DrawLine3D(const Color3& color, const Vector3& A, const Vector3& B, float thickness)
+        {
+            glBegin(GL_LINES);
+            glLineWidth(thickness);
+            glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
+            glVertex3f(A.x, A.y, A.z);
+            glVertex3f(B.x, B.y, B.z);
+            glEnd();
+        }
+
+        void DrawString3D(const Color3& color, const std::string& text, const Vector3& pos, float scale, u32 size, unsigned int font_index)
+        {
+            float x = pos.x;
+            float y = pos.y;
+            float z = pos.z;
+            GLfloat currentColor[4];
+             std::vector<GLuint> textures(text.length());;
+            glGetFloatv(GL_CURRENT_COLOR, currentColor);
+            glUseProgram(0); // Fixed-function pipeline.
+            glColor4f(color.r, color.g, color.b, 1.0f);
+
+            Font font;
+            for (auto& f : faces)
+                if (f.index == font_index)
+                    font = f;
+            if (font.face == NULL) {
+                std::cout << "null font" << std::endl;
+                return;
+            }
+
+
+            FT_Set_Pixel_Sizes(font.face, 0, size);
+
+            //for (c = text.c_str(); *c; c++)
+            for (int i = 0; i < text.length(); i++)
+            {
+                if (FT_Load_Char(font.face, text.c_str()[i], FT_LOAD_RENDER))
+                    continue;
+
+                FT_GlyphSlot g = font.face->glyph;
+                glEnable(GL_BLEND);
+                glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+                glActiveTexture(GL_TEXTURE0);
+                glEnable(GL_TEXTURE_2D);
+                glGenTextures(1, &textures.at(i));
+                glBindTexture(GL_TEXTURE_2D, textures[i]);
+                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
+                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
+                glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, g->bitmap.width, g->bitmap.rows, 0, GL_ALPHA, GL_UNSIGNED_BYTE, g->bitmap.buffer);
+
+                float x2 = x + g->bitmap_left * scale;
+                float y2 = -y - g->bitmap_top * scale; // Adjust y-coordinate
+                float z2 = z;
+                float w = g->bitmap.width * scale;
+                float h = g->bitmap.rows * scale;
+
+                glBegin(GL_TRIANGLES);
+
+                glTexCoord2f(0, 0);
+                glVertex3f(x2, y2, z2);
+
+                glTexCoord2f(0, 1);
+                glVertex3f(x2, y2 + h, z2);
+
+                glTexCoord2f(1, 1);
+                glVertex3f(x2 + w, y2 + h, z2);
+
+                glTexCoord2f(0, 0);
+                glVertex3f(x2, y2, z2);
+
+                glTexCoord2f(1, 1);
+                glVertex3f(x2 + w, y2 + h, z2);
+
+                glTexCoord2f(1, 0);
+                glVertex3f(x2 + w, y2, z2);
+
+                glEnd();
+
+                x += (g->advance.x >> 6) * scale;
+                y += (g->advance.y >> 6) * scale;
+
+            }
+
+            for (unsigned int& texture : textures)
+                glDeleteTextures(1, &texture);
+
+            glDisable(GL_TEXTURE_2D);
+            glDisable(GL_BLEND);
+            glBindTexture(GL_TEXTURE_2D, 0); // Unbind texture
+            glColor4f(currentColor[0], currentColor[1], currentColor[2], currentColor[3]); //Set draw color back to whatever it was before.
+        }
+
+    }
+}

src/JGL/JGL.cpp

@@ -1,289 +0,0 @@
-//
-// Created by dawsh on 1/17/24.
-//
-
-#include <glad/glad.h>
-#include <JGL/JGL.h>
-#include <J3ML/LinearAlgebra/Transform2D.h>
-#include <freetype2/ft2build.h>
-#include FT_FREETYPE_H
-#include <JGL/Color3.h>
-#include <iostream>
-
-
-GLuint program;
-GLuint texture;
-
-namespace JGL
-{
-    FT_Face face;
-    FT_Library ft;
-
-    using namespace J3ML;
-
-    bool InitTextEngine() {
-        constexpr u32 default_font_size = 16;
-        if (FT_Init_FreeType(&ft))
-        {
-            std::cout << "Error::FREETYPE: " << std::endl;
-            return false;
-        }
-
-        if (FT_New_Face(ft, "content/FreeSans.ttf", 0, &face))
-        {
-            std::cout << "Error::FREETYPE: Failed to load font!" << std::endl;
-            return false;
-        }
-
-        return true;
-    }
-
-    namespace J2D
-    {
-        void FillRect2D(const Color3 &color, const Vector2 &pos, const Vector2 &size) {
-            auto vp_pos = pos;
-            auto vp_size = size;
-            glBegin(GL_QUADS);
-            glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
-            glVertex2f(vp_pos.x, vp_pos.y);
-            glVertex2f(vp_pos.x, vp_pos.y + vp_size.y);
-            glVertex2f(vp_pos.x + vp_size.x, vp_pos.y + vp_size.y);
-            glVertex2f(vp_pos.x + vp_size.x, vp_pos.y);
-            glEnd();
-        }
-
-        void OutlineRect2D(const Color3 &color, const Vector2 &pos, const Vector2 &size, float thickness) {
-            auto vp_pos = pos;
-            auto vp_size = size;
-            glBegin(GL_LINE_LOOP);
-            glLineWidth(thickness);
-            glColor3f(color.r, color.g, color.b);
-            glVertex2f(vp_pos.x, vp_pos.y);
-            glVertex2f(vp_pos.x, vp_pos.y + vp_size.y);
-            glVertex2f(vp_pos.x + vp_size.x, vp_pos.y + vp_size.y);
-            glVertex2f(vp_pos.x + vp_size.x, vp_pos.y);
-            glEnd();
-        }
-
-        void DrawLine2D(const Color3 &color, const Vector2 &A, const Vector2 &B, float thickness) {
-            auto vp_a = A;
-            auto vp_b = B;
-
-            glBegin(GL_LINES);
-            glLineWidth(thickness);
-            glColor3f(color.r, color.g, color.b);
-            glVertex2f(vp_a.x, vp_a.y);
-            glVertex2f(vp_b.x, vp_b.y);
-            glEnd();
-
-        }
-
-        void DrawLine2D(const Color3 &color, float x, float y, float w, float h, float thickness) {
-            DrawLine2D(color, {x, y}, {w, h}, thickness);
-        }
-
-        void DrawPixel2D(const Color3 &color, float x, float y) {
-            DrawPixel2D(color, {x, y});
-        }
-
-        void DrawPixel2D(const Color3 &color, const Vector2 &coordinates) {
-            auto vp_pos = coordinates;
-            glBegin(GL_POINT);
-            glColor3f(color.r, color.g, color.b);
-            glVertex2f(vp_pos.x, vp_pos.y);
-            glEnd();
-        }
-
-        void
-        OutlineCircle2D(const Color3 &color, const Vector2 &center, float radius, int subdivisions, float thickness) {
-            glBegin(GL_LINE_LOOP);
-            GLfloat angle;
-            glColor3f(color.r, color.g, color.b);
-            float step = (2.f * M_PI) / (float)subdivisions;
-            for (angle = 0.0f; angle < (2.f * M_PI); angle += step)
-            {
-                GLfloat x = radius * sin(angle);
-                GLfloat y = radius * cos(angle);
-                x += center.x;
-                y += center.y;
-                glVertex2f(x, y);
-            }
-            glEnd();
-        }
-
-        void FillCircle2D(const Color3 &color, const Vector2 &center, float radius, int subdivisions) {
-            glBegin(GL_POLYGON);
-            GLfloat angle;
-            glColor3f(color.r, color.g, color.b);
-            float step = (2.f * M_PI) / (float)subdivisions;
-            for (angle = 0.0f; angle < (2.f * M_PI); angle += step)
-            {
-                GLfloat x = radius * sin(angle);
-                GLfloat y = radius * cos(angle);
-                x += center.x;
-                y += center.y;
-                glVertex2f(x, y);
-            }
-            glEnd();
-        }
-
-        void OutlineTriangle2D(const Color3& color, const Triangle2D& tri)
-        {
-            glBegin(GL_LINE_LOOP);
-            glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
-            glVertex2f(tri.A.x, tri.A.y);
-            glVertex2f(tri.B.x, tri.B.y);
-            glVertex2f(tri.C.x, tri.C.y);
-            glEnd();
-        }
-
-        void FillTriangle2D(const Color3& color, const Triangle2D& tri)
-        {
-            glBegin(GL_LINE_LOOP);
-            glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
-            glVertex2f(tri.A.x, tri.A.y);
-            glVertex2f(tri.B.x, tri.B.y);
-            glVertex2f(tri.C.x, tri.C.y);
-            glEnd();
-        }
-
-        void DrawString2D(const Color3& color, std::string text, float x, float y, float scale, u32 size) {
-            glUseProgram(0); // Fixed-function pipeline.
-            glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
-
-            FT_Set_Pixel_Sizes(face, 0, size);
-
-            const char* c;
-            for (c = text.c_str(); *c; c++)
-            {
-                if (FT_Load_Char(face, *c, FT_LOAD_RENDER))
-                    continue;
-
-                FT_GlyphSlot g = face->glyph;
-
-                glActiveTexture(GL_TEXTURE0);
-                glGenTextures(1, &texture);
-                glBindTexture(GL_TEXTURE_2D, texture);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
-                glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, g->bitmap.width, g->bitmap.rows, 0, GL_ALPHA, GL_UNSIGNED_BYTE, g->bitmap.buffer);
-
-                float x2 = x + g->bitmap_left * scale;
-                float y2 = -y - g->bitmap_top * scale; // Adjust y-coordinate
-                float w = g->bitmap.width * scale;
-                float h = g->bitmap.rows * scale;
-
-                glBegin(GL_TRIANGLES);
-
-                glTexCoord2f(0, 0);
-                glVertex2f(x2, y2);
-
-                glTexCoord2f(0, 1);
-                glVertex2f(x2, y2 + h);
-
-                glTexCoord2f(1, 1);
-                glVertex2f(x2 + w, y2 + h);
-
-                glTexCoord2f(0, 0);
-                glVertex2f(x2, y2);
-
-                glTexCoord2f(1, 1);
-                glVertex2f(x2 + w, y2 + h);
-
-                glTexCoord2f(1, 0);
-                glVertex2f(x2 + w, y2);
-
-                glEnd();
-
-                x += (g->advance.x >> 6) * scale;
-                y += (g->advance.y >> 6) * scale;
-
-            }
-            glBindTexture(GL_TEXTURE_2D, 0); // Unbind texture
-        }
-    }
-
-
-    namespace J3D
-    {
-        void DrawLine3D(const Color3& color, const Vector3& A, const Vector3& B, float thickness)
-        {
-
-            glBegin(GL_LINES);
-            glLineWidth(thickness);
-            glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
-            glVertex3f(A.x, A.y, A.z);
-            glVertex3f(B.x, B.y, B.z);
-            glEnd();
-        }
-
-        void DrawString3D(const Color3& color, const std::string& text, const Vector3& pos, float scale, u32 size)
-        {
-            float x = pos.x;
-            float y = pos.y;
-            float z = pos.z;
-            glUseProgram(0); // Fixed-function pipeline.
-            glColor3f(1.0f, 1.0f, 1.0f);
-
-            FT_Set_Pixel_Sizes(face, 0, size);
-
-            const char* c;
-            for (c = text.c_str(); *c; c++)
-            {
-                if (FT_Load_Char(face, *c, FT_LOAD_RENDER))
-                    continue;
-
-                FT_GlyphSlot g = face->glyph;
-
-                glActiveTexture(GL_TEXTURE0);
-                glGenTextures(1, &texture);
-                glBindTexture(GL_TEXTURE_2D, texture);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
-                glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, g->bitmap.width, g->bitmap.rows, 0, GL_ALPHA, GL_UNSIGNED_BYTE, g->bitmap.buffer);
-
-                float x2 = x + g->bitmap_left * scale;
-                float y2 = -y - g->bitmap_top * scale; // Adjust y-coordinate
-                float z2 = z;
-                float w = g->bitmap.width * scale;
-                float h = g->bitmap.rows * scale;
-
-                glBegin(GL_TRIANGLES);
-
-                glTexCoord2f(0, 0);
-                glVertex3f(x2, y2, z2);
-
-                glTexCoord2f(0, 1);
-                glVertex3f(x2, y2 + h, z2);
-
-                glTexCoord2f(1, 1);
-                glVertex3f(x2 + w, y2 + h, z2);
-
-                glTexCoord2f(0, 0);
-                glVertex3f(x2, y2, z2);
-
-                glTexCoord2f(1, 1);
-                glVertex3f(x2 + w, y2 + h, z2);
-
-                glTexCoord2f(1, 0);
-                glVertex3f(x2 + w, y2, z2);
-
-                glEnd();
-
-                x += (g->advance.x >> 6) * scale;
-                y += (g->advance.y >> 6) * scale;
-
-            }
-            glBindTexture(GL_TEXTURE_2D, 0); // Unbind texture
-        }
-
-    }
-}