* TextMesh

1 files changed, 90 insertions, 0 deletions

diff --git a/Runtime/GUI/TextMesh.cpp b/Runtime/GUI/TextMesh.cpp
index e69de29..6f3b3d6 100644
--- a/Runtime/GUI/TextMesh.cpp
+++ b/Runtime/GUI/TextMesh.cpp
@@ -0,0 +1,90 @@
+#include "../Graphics/CustomVertexLayout.h"
+#include "Runtime/Utilities/StaticInitiator.h"
+#include "../Math/Math.h"
+#include "../Graphics/Color.h"
+#include "TextMesh.h"
+#include <vector>
+#include <unordered_map>
+
+using namespace std;
+
+struct TextMeshVBOLayout
+{
+	Vector2 position;
+	Vector2 uv;
+	Color32 color;
+};
+
+static CustomVertexLayout s_TextMeshVBOLayout;
+
+static unsigned int s_VertexPerText;
+static unsigned int s_SizePerVertex;
+static unsigned int s_SizePerText;
+static unsigned int s_IndicesPerText;
+
+struct TextInfo {
+	const Character* ch;
+	float offset;
+};
+
+static unordered_map<unsigned int, vector<TextInfo>> s_TextInfos;
+
+InitializeStaticVariables([]() {
+	VertexAttributeDescriptor POSITION = VertexAttributeDescriptor(0, 2, VertexAttrFormat_Float, sizeof(TextMeshVBOLayout));
+	VertexAttributeDescriptor UV = VertexAttributeDescriptor(sizeof(Vector2), 2, VertexAttrFormat_Float, sizeof(TextMeshVBOLayout));
+	VertexAttributeDescriptor COLOR = VertexAttributeDescriptor(sizeof(Vector2)*2, 4, VertexAttrFormat_Unsigned_Byte, sizeof(TextMeshVBOLayout), true);
+	s_TextMeshVBOLayout.attributes.push_back(POSITION);
+	s_TextMeshVBOLayout.attributes.push_back(UV);
+	s_TextMeshVBOLayout.attributes.push_back(COLOR);
+
+	s_VertexPerText = 4;
+	s_SizePerVertex = sizeof(TextMeshVBOLayout);
+	s_SizePerText = sizeof(TextMeshVBOLayout) * 4;
+	s_IndicesPerText = 6;
+});
+
+TextMesh::TextMesh(const UnicodeString& str, Font* font,int pixelSize, ETextAnchor anchor, ETextAlignment alignment)
+{
+	m_Font = font;
+	s_TextInfos.clear();
+
+	float offset = 0;
+	for (int i = 0; i < str.length; ++i)
+	{
+		character::Codepoint c = str.str[i];
+		const Character* ch = font->GetCharacter(c, pixelSize);
+		unsigned int index = ch->atlas;
+		
+		TextInfo info;
+		info.ch = ch;
+		info.offset = offset;
+
+		auto list = s_TextInfos.find(index);
+		if (list == s_TextInfos.end())
+		{
+			s_TextInfos.insert(std::pair<unsigned int, vector<TextInfo>>(index, vector<TextInfo>()));
+			list = s_TextInfos.find(index);
+		}
+		vector<TextInfo>& v = list->second;
+		v.push_back(info);
+
+		offset += ch->advance;
+	}
+
+	if (s_TextInfos.size() == 0)
+		return;
+
+	for (auto iter : s_TextInfos) {
+		unsigned int index = iter.first;
+		vector<TextInfo>& texts = iter.second;
+		int count = texts.size();
+
+		VertexBuffer* vb = new VertexBuffer(count * s_SizePerText, count * s_IndicesPerText, VertexBuffer::VertexBufferType_Static);
+
+	}
+}
+
+void TextMesh::Draw()
+{
+
+}