Support for multiple fonts

# Conflicts:
#	CMakeLists.txt

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)

include/JGL/JGL.h

@@ -3,18 +3,15 @@
 //
 #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 <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 +49,9 @@ namespace JGL {
     };
 
     bool InitTextEngine();
-
+    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 +68,7 @@ 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 +87,7 @@ 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;
 
@@ -48,10 +26,12 @@ 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) :
@@ -76,12 +56,13 @@ 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);
@@ -99,15 +80,13 @@ 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 +107,7 @@ 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();

src/JGL.cpp

@@ -2,40 +2,63 @@
 // Created by dawsh on 1/17/24.
 //
 
+#include <vector>
 #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>
-
+#if __linux__
+    #include <freetype2/ft2build.h>
+    #include FT_FREETYPE_H
+#endif
+#if _WIN32
+    #include <ft2build.h>
+    #include FT_FREETYPE_H
+#endif
 
 GLuint program;
-GLuint texture;
-
 namespace JGL
 {
-    FT_Face face;
     FT_Library ft;
 
+    struct Font {
+        int index = 0;
+        FT_Face face;
+    };
+
+    std::vector<Font> faces;
+
     using namespace J3ML;
-
     bool InitTextEngine() {
-        constexpr u32 default_font_size = 16;
         if (FT_Init_FreeType(&ft))
-        {
-            std::cout << "Error::FREETYPE: " << std::endl;
-            return false;
-        }
+            return true;
+        return false;
+    }
 
-        if (FT_New_Face(ft, "content/FreeSans.ttf", 0, &face))
-        {
+    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 false;
+            return -1;
         }
 
-        return true;
+        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
@@ -147,23 +170,38 @@ namespace JGL
             glEnd();
         }
 
-        void DrawString2D(const Color3& color, std::string text, float x, float y, float scale, u32 size) {
+        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{};
+            for (const auto& f : faces)
+                if (f.index == font_index)
+                    font = f;
+            if (font.face == NULL) {
+                std::cout << "null font" << std::endl;
+                return;
+            }
+
+            GLfloat currentColor[4];
+            glGetFloatv(GL_CURRENT_COLOR, currentColor);
+
             glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
 
-            FT_Set_Pixel_Sizes(face, 0, size);
+            FT_Set_Pixel_Sizes(font.face, 0, size);
 
-            const char* c;
-            for (c = text.c_str(); *c; c++)
+            std::vector<GLuint> textures(text.length());
+            for (int i = 0; i < text.length(); i++)
             {
-                if (FT_Load_Char(face, *c, FT_LOAD_RENDER))
+                if (FT_Load_Char(font.face, text.c_str()[i], FT_LOAD_RENDER))
                     continue;
 
-                FT_GlyphSlot g = face->glyph;
-
+                FT_GlyphSlot g = font.face->glyph;
+                glEnable(GL_BLEND);
+                glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
                 glActiveTexture(GL_TEXTURE0);
-                glGenTextures(1, &texture);
-                glBindTexture(GL_TEXTURE_2D, texture);
+                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);
@@ -201,9 +239,14 @@ namespace JGL
 
                 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.
         }
     }
 
@@ -212,7 +255,6 @@ namespace JGL
     {
         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);
@@ -221,27 +263,42 @@ namespace JGL
             glEnd();
         }
 
-        void DrawString3D(const Color3& color, const std::string& text, const Vector3& pos, float scale, u32 size)
+        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.
-            glColor3f(1.0f, 1.0f, 1.0f);
+            glColor4f(color.r, color.g, color.b, 1.0f);
 
-            FT_Set_Pixel_Sizes(face, 0, size);
+            Font font;
+            for (auto& f : faces)
+                if (f.index == font_index)
+                    font = f;
+            if (font.face == NULL) {
+                std::cout << "null font" << std::endl;
+                return;
+            }
 
-            const char* c;
-            for (c = text.c_str(); *c; c++)
+
+            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(face, *c, FT_LOAD_RENDER))
+                if (FT_Load_Char(font.face, text.c_str()[i], FT_LOAD_RENDER))
                     continue;
 
-                FT_GlyphSlot g = face->glyph;
-
+                FT_GlyphSlot g = font.face->glyph;
+                glEnable(GL_BLEND);
+                glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
                 glActiveTexture(GL_TEXTURE0);
-                glGenTextures(1, &texture);
-                glBindTexture(GL_TEXTURE_2D, texture);
+                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);
@@ -282,7 +339,14 @@ namespace JGL
                 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.
         }
 
     }