Moved poker code to main dawn code.

src/dawn/display/font/CMakeLists.txt

@@ -0,0 +1,9 @@
+# Copyright (c) 2023 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+target_sources(${DAWN_TARGET_NAME}
+  PRIVATE
+    TrueTypeTexture.cpp
+)

src/dawn/display/font/TrueTypeCharacter.hpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dawnlibs.hpp"
+
+namespace Dawn {
+  struct TrueTypeCharacter {
+    glm::vec2 advance;
+    glm::vec2 size;
+    glm::vec2 offset;
+    glm::vec4 quad;
+  };
+}

src/dawn/display/font/TrueTypeTexture.cpp

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+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "TrueTypeTexture.hpp"
+#include "assert/assert.hpp"
+#include "util/Math.hpp"
+#include "display/mesh/QuadMesh.hpp"
+
+using namespace Dawn;
+
+TrueTypeTexture::TrueTypeTexture(const uint32_t fontSize) :
+  fontSize(fontSize)
+{
+  assertTrue(fontSize > 0, "Font size cannot be zero");
+  texture = std::make_shared<Texture>();
+}
+
+void TrueTypeTexture::setFace(const FT_Face face) {
+  this->face = face;
+  assertTrue(fontSize < 256, "Font size cannot be greater than 256");
+
+  // Set freetype font size prior to baking.
+  auto ret = FT_Set_Pixel_Sizes(face, 0, fontSize);
+  if(ret != 0) {
+    assertUnreachable("Failed to set font size %i", ret);
+  }
+  
+  // Set the texture size
+  texture->setSize(
+    fontSize * 24,
+    fontSize * 24,
+    TextureFormat::R,
+    TextureDataFormat::UNSIGNED_BYTE
+  );
+
+  // Texture buffer
+  uint8_t *buffer = new uint8_t[texture->getWidth() * texture->getHeight()];
+  // Fill with zeros
+  std::memset(buffer, 0, texture->getWidth() * texture->getHeight());
+
+  size_t offset = 0;
+  struct TrueTypeCharacter info;
+  int32_t textureX = 0, textureY = 0;
+  int32_t rowHeight = 0;
+
+  // Character sets
+  std::vector<wchar_t> characterBlocks;
+  // Latin
+  for(wchar_t c = 0x0020; c < 0x007F; c++) characterBlocks.push_back(c);
+  // Latin-1 Supplement
+  for(wchar_t c = 0x00A0; c < 0x00FF; c++) characterBlocks.push_back(c);
+  // Latin Extended-A
+  for(wchar_t c = 0x0100; c < 0x017F; c++) characterBlocks.push_back(c);
+  // Latin Extended-B
+  for(wchar_t c = 0x0180; c < 0x024F; c++) characterBlocks.push_back(c);
+  // Hiragana
+  for(wchar_t c = 0x3040; c < 0x309F; c++) characterBlocks.push_back(c);
+  // Katakana
+  for(wchar_t c = 0x30A0; c < 0x30FF; c++) characterBlocks.push_back(c);
+
+  // For each character in the character set
+  for(wchar_t c : characterBlocks) {
+    // Load the character
+    if(FT_Load_Char(face, c, FT_LOAD_RENDER)) {
+      assertUnreachable("Failed to load character (1)");
+    }
+
+    // Store the character information
+    info.advance.x = (float_t)(face->glyph->advance.x >> 6);
+    info.advance.y = (float_t)(face->glyph->advance.y >> 6);
+    info.size = glm::vec2(face->glyph->bitmap.width, face->glyph->bitmap.rows);
+
+    // Determine the texture position
+    if(textureX + face->glyph->bitmap.width >= texture->getWidth()) {
+      textureX = 0;
+      textureY += rowHeight + 2;// Tiny gap between rows
+      rowHeight = face->glyph->bitmap.rows;
+    } else {
+      rowHeight = Math::max<int32_t>(rowHeight, face->glyph->bitmap.rows);
+    }
+
+    // Set the quad positions
+    info.offset = glm::vec2(
+      face->glyph->bitmap_left,
+      -face->glyph->bitmap_top
+    );
+    info.quad = glm::vec4(
+      textureX,
+      textureY,
+      textureX + face->glyph->bitmap.width,
+      textureY + face->glyph->bitmap.rows
+    ) / glm::vec4(
+      texture->getWidth(),
+      texture->getHeight(),
+      texture->getWidth(),
+      texture->getHeight()
+    );
+
+    // Store the cached character data.
+    this->characterData[c] = info;
+
+    // Determine pixel offset.
+    offset = textureX + (textureY * texture->getWidth());
+    assertTrue(
+      offset + (face->glyph->bitmap.rows * texture->getWidth()) <=
+      texture->getWidth() * texture->getHeight(),
+      "Font texture buffer overflow will occur."
+    );
+
+    // Buffer pixels, we have to do this one row at a time due to the 
+    // differences in width between the glyph and the texture.
+    const size_t countPerRow = face->glyph->bitmap.width;
+    int32_t i = 0;
+    while(i != face->glyph->bitmap.rows) {
+      std::memcpy(
+        buffer + offset + (i * texture->getWidth()),
+        face->glyph->bitmap.buffer + (i * countPerRow),
+        countPerRow
+      );
+      i++;
+    }
+
+    // Increment textureX
+    textureX += face->glyph->bitmap.width + 2;// I add a tiny gap between chars
+  }
+
+  this->texture->buffer(buffer);
+  delete[] buffer;
+}
+
+struct TrueTypeCharacter TrueTypeTexture::getCharacterData(wchar_t c) {
+  return this->characterData[c];
+}
+
+glm::vec2 TrueTypeTexture::bufferStringToMesh(
+  std::shared_ptr<Mesh> mesh,
+  const std::wstring text,
+  glm::vec2 &position,
+  bool_t flipY
+) {
+  assertNotNull(mesh, "Mesh must be supplied and not null");
+  assertTrue(text.size() > 0, "Text must be at least one character long.");
+
+  // Create mesh buffers
+  mesh->createBuffers(
+    text.length() * QUAD_VERTICE_COUNT,
+    text.length() * QUAD_INDICE_COUNT
+  );
+  
+  // Foreach char
+  size_t i = 0;
+  glm::vec2 size = { 0, 0 };
+  for(wchar_t c : text) {
+    // Get the character data
+    auto info = this->getCharacterData(c);
+
+    // Buffer the quad
+    glm::vec4 quad = glm::vec4(
+      position.x,
+      position.y,
+      position.x + info.size.x,
+      position.y + info.size.y
+    );
+    if(flipY) {
+      QuadMesh::buffer(
+        mesh,
+        quad,
+        glm::vec4(
+          info.quad.x,
+          info.quad.w,
+          info.quad.z,
+          info.quad.y
+        ),
+        i * QUAD_VERTICE_COUNT,
+        i * QUAD_INDICE_COUNT
+      );
+    } else {
+      QuadMesh::buffer(
+        mesh,
+        quad,
+        info.quad,
+        i * QUAD_VERTICE_COUNT,
+        i * QUAD_INDICE_COUNT
+      );
+    }
+    position += info.advance;
+    size += info.advance;
+
+    i++;
+  }
+
+  return size;
+}
+
+TrueTypeTexture::~TrueTypeTexture() {
+}

src/dawn/display/font/TrueTypeTexture.hpp

@@ -0,0 +1,66 @@
+// Copyright (c) 2023 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "display/Texture.hpp"
+#include "TrueTypeCharacter.hpp"
+#include "display/mesh/Mesh.hpp"
+#include <ft2build.h>
+#include FT_FREETYPE_H
+
+namespace Dawn {
+  class TrueTypeTexture final {
+    private:
+      FT_Face face;
+
+    public:
+      uint32_t fontSize;
+      std::shared_ptr<Texture> texture;
+      std::unordered_map<wchar_t, struct TrueTypeCharacter> characterData;
+
+      /**
+       * Construct a new New True Type Face Texture object
+       * 
+       * @param fontSize Size of the font.
+       */
+      TrueTypeTexture(const uint32_t fontSize);
+
+      /**
+       * Sets the face for this texture.
+       * 
+       * @param face Face to set.
+       */
+      void setFace(const FT_Face face);
+
+      /**
+       * Returns the character data for the given character.
+       * 
+       * @param c Character to get data for.
+       * @return The Character data for the given character.
+       */
+      struct TrueTypeCharacter getCharacterData(wchar_t c);
+
+      /**
+       * Buffers a string to the given mesh.
+       * 
+       * @param mesh Mesh to buffer to.
+       * @param text Text to buffer.
+       * @param position Position to buffer to.
+       * @param flipY Whether or not to flip the Y axis.
+       * @return The size of the string.
+       */
+      glm::vec2 bufferStringToMesh(
+        std::shared_ptr<Mesh> mesh,
+        const std::wstring text,
+        glm::vec2 &position,
+        bool_t flipY = false
+      );
+
+      /**
+       * Destroys this true type face texture.
+       */
+      ~TrueTypeTexture();
+  };
+}