quartznet/raylib-cs
Watch
2
0
Fork
You've already forked raylib-cs
 0
Code Wiki Activity

chore: clean recommit

Browse source
This commit is contained in:
tiger tiger tiger 2026-07-07 23:47:38 +02:00
commit 60ad2e7fb1
122 changed files with 23950 additions and 323 deletions
Download patch file Download diff file Expand all files Collapse all files

739
Examples/Text/Text3D.cs Normal file
View file

@ -0,0 +1,739 @@
/*******************************************************************************************
*
* raylib [text] example - 3d drawing
*
* Example complexity rating: [★★★★] 4/4
*
* NOTE: Draw a 2D text in 3D space, each letter is drawn in a quad (or 2 quads if backface is set)
* where the texture coodinates of each quad map to the texture coordinates of the glyphs
* inside the font texture
*
* A more efficient approach, i believe, would be to render the text in a render texture and
* map that texture to a plane and render that, or maybe a shader but my method allows more
* flexibility...for example to change position of each letter individually to make somethink
* like a wavy text effect
*
* Special thanks to:
* @Nighten for the DrawTextStyle() code https://github.com/NightenDushi/Raylib_DrawTextStyle
* Chris Camacho (codifies - http://bedroomcoders.co.uk/) for the alpha discard shader
*
* Example originally created with raylib 3.5, last time updated with raylib 4.0
*
* Example contributed by Vlad Adrian (@demizdor) and reviewed by Ramon Santamaria (@raysan5)
*
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
* BSD-like license that allows static linking with closed source software
*
* Copyright (c) 2021-2025 Vlad Adrian (@demizdor)
*
********************************************************************************************/
using System;
using System.Numerics;
using System.Text;
using Raylib_cs;
using static Raylib_cs.Raylib;
namespace Examples.Text;
public partial class Text3D : IExample
{
private const int screenWidth = 800;
private const int screenHeight = 450;
#if BROWSER
const int GlslVersion = 100; // WebGL1 needs GLSL ES 100
#else
private const int GlslVersion = 330;
#endif
//--------------------------------------------------------------------------------------
// Global variables
//--------------------------------------------------------------------------------------
private const float LetterBoundrySize = 0.25f;
private const int TextMaxLayers = 32;
private static readonly Color LetterBoundryColor = Color.Violet;
private bool showLetterBoundry;
private bool showTextBoundry;
//--------------------------------------------------------------------------------------
// Types and Structures Definition
//--------------------------------------------------------------------------------------
// Configuration structure for waving the text
private struct WaveTextConfig
{
public Vector3 WaveRange;
public Vector3 WaveSpeed;
public Vector3 WaveOffset;
}
public string Name => "Text / Text 3D";
public string Title => "raylib [text] example - 3d drawing";
public ConfigFlags ConfigFlags => ConfigFlags.Msaa4xHint | ConfigFlags.VSyncHint;
public bool CursorDisabled => true;
private bool spin; // Spin the camera?
private bool multicolor; // Multicolor mode
private Camera3D camera;
private CameraMode cameraMode;
private Vector3 cubePosition;
private Vector3 cubeSize;
private Font font;
private float fontSize;
private float fontSpacing;
private float lineSpacing;
private string text;
private Vector3 tbox;
private int layers;
private int quads;
private float layerDistance;
private WaveTextConfig wcfg;
private float time;
private Color light;
private Color dark;
private Shader alphaDiscard;
private Color[] multi;
public void Init()
{
spin = true; // Spin the camera?
multicolor = false; // Multicolor mode
showLetterBoundry = false;
showTextBoundry = false;
// Define the camera to look into our 3d world
camera = new();
camera.Position = new Vector3(-10.0f, 15.0f, -10.0f); // Camera position
camera.Target = new Vector3(0.0f, 0.0f, 0.0f); // Camera looking at point
camera.Up = new Vector3(0.0f, 1.0f, 0.0f); // Camera up vector (rotation towards target)
camera.FovY = 45.0f; // Camera field-of-view Y
camera.Projection = CameraProjection.Perspective; // Camera projection type
cameraMode = CameraMode.Orbital;
cubePosition = new Vector3(0.0f, 1.0f, 0.0f);
cubeSize = new Vector3(2.0f, 2.0f, 2.0f);
// Use the default font
font = GetFontDefault();
fontSize = 0.8f;
fontSpacing = 0.05f;
lineSpacing = -0.1f;
// Set the text (using markdown!)
text = "Hello ~~World~~ in 3D!";
tbox = new Vector3(0, 0, 0);
layers = 1;
quads = 0;
layerDistance = 0.01f;
wcfg = new WaveTextConfig();
wcfg.WaveSpeed.X = wcfg.WaveSpeed.Y = 3.0f; wcfg.WaveSpeed.Z = 0.5f;
wcfg.WaveOffset.X = wcfg.WaveOffset.Y = wcfg.WaveOffset.Z = 0.35f;
wcfg.WaveRange.X = wcfg.WaveRange.Y = wcfg.WaveRange.Z = 0.45f;
time = 0.0f;
// Setup a light and dark color
light = Color.Maroon;
dark = Color.Red;
// Load the alpha discard shader
alphaDiscard = LoadShader(null, $"resources/shaders/glsl{GlslVersion}/alpha_discard.fs");
// Array filled with multiple random colors (when multicolor mode is set)
multi = new Color[TextMaxLayers];
}
public void Update()
{
// Update
//----------------------------------------------------------------------------------
UpdateCamera(ref camera, cameraMode);
// Handle font files dropped
if (IsFileDropped())
{
string[] droppedFiles = GetDroppedFiles();
// NOTE: We only support first ttf file dropped
if (IsFileExtension(droppedFiles[0], ".ttf"))
{
UnloadFont(font);
font = LoadFontEx(droppedFiles[0], (int)fontSize, null, 0);
}
else if (IsFileExtension(droppedFiles[0], ".fnt"))
{
UnloadFont(font);
font = LoadFont(droppedFiles[0]);
fontSize = (float)font.BaseSize;
}
}
// Handle Events
if (IsKeyPressed(KeyboardKey.F1)) showLetterBoundry = !showLetterBoundry;
if (IsKeyPressed(KeyboardKey.F2)) showTextBoundry = !showTextBoundry;
if (IsKeyPressed(KeyboardKey.F3))
{
// Handle camera change
spin = !spin;
// we need to reset the camera when changing modes
camera = new();
camera.Target = new Vector3(0.0f, 0.0f, 0.0f); // Camera looking at point
camera.Up = new Vector3(0.0f, 1.0f, 0.0f); // Camera up vector (rotation towards target)
camera.FovY = 45.0f; // Camera field-of-view Y
camera.Projection = CameraProjection.Perspective; // Camera mode type
if (spin)
{
camera.Position = new Vector3(-10.0f, 15.0f, -10.0f); // Camera position
cameraMode = CameraMode.Orbital;
}
else
{
camera.Position = new Vector3(10.0f, 10.0f, -10.0f); // Camera position
cameraMode = CameraMode.Free;
}
}
// Handle clicking the cube
if (IsMouseButtonPressed(MouseButton.Left))
{
Ray ray = GetScreenToWorldRay(GetMousePosition(), camera);
// Check collision between ray and box
RayCollision collision = GetRayCollisionBox(ray,
new BoundingBox(
new Vector3(cubePosition.X - cubeSize.X / 2, cubePosition.Y - cubeSize.Y / 2, cubePosition.Z - cubeSize.Z / 2),
new Vector3(cubePosition.X + cubeSize.X / 2, cubePosition.Y + cubeSize.Y / 2, cubePosition.Z + cubeSize.Z / 2)));
if (collision.Hit)
{
// Generate new random colors
light = GenerateRandomColor(0.5f, 0.78f);
dark = GenerateRandomColor(0.4f, 0.58f);
}
}
// Handle text layers changes
if (IsKeyPressed(KeyboardKey.Home)) { if (layers > 1) --layers; }
else if (IsKeyPressed(KeyboardKey.End)) { if (layers < TextMaxLayers) ++layers; }
// Handle text changes
if (IsKeyPressed(KeyboardKey.Left)) fontSize -= 0.5f;
else if (IsKeyPressed(KeyboardKey.Right)) fontSize += 0.5f;
else if (IsKeyPressed(KeyboardKey.Up)) fontSpacing -= 0.1f;
else if (IsKeyPressed(KeyboardKey.Down)) fontSpacing += 0.1f;
else if (IsKeyPressed(KeyboardKey.PageUp)) lineSpacing -= 0.1f;
else if (IsKeyPressed(KeyboardKey.PageDown)) lineSpacing += 0.1f;
else if (IsKeyDown(KeyboardKey.Insert)) layerDistance -= 0.001f;
else if (IsKeyDown(KeyboardKey.Delete)) layerDistance += 0.001f;
else if (IsKeyPressed(KeyboardKey.Tab))
{
multicolor = !multicolor; // Enable /disable multicolor mode
if (multicolor)
{
// Fill color array with random colors
for (int i = 0; i < TextMaxLayers; i++)
{
multi[i] = GenerateRandomColor(0.5f, 0.8f);
multi[i].A = (byte)GetRandomValue(0, 255);
}
}
}
// Handle text input
int ch = GetCharPressed();
if (IsKeyPressed(KeyboardKey.Backspace))
{
// Remove last char
if (text.Length > 0) text = text.Substring(0, text.Length - 1);
}
else if (IsKeyPressed(KeyboardKey.Enter))
{
// handle newline
if (text.Length < 63) text += '\n';
}
else
{
// append only printable chars
if ((ch != 0) && (text.Length < 63)) text += char.ConvertFromUtf32(ch);
}
// Measure 3D text so we can center it
tbox = MeasureTextWave3D(font, text, fontSize, fontSpacing, lineSpacing);
quads = 0; // Reset quad counter
time += GetFrameTime(); // Update timer needed by `DrawTextWave3D()`
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(Color.RayWhite);
BeginMode3D(camera);
DrawCubeV(cubePosition, cubeSize, dark);
DrawCubeWires(cubePosition, 2.1f, 2.1f, 2.1f, light);
DrawGrid(10, 2.0f);
// Use a shader to handle the depth buffer issue with transparent textures
// NOTE: more info at https://bedroomcoders.co.uk/posts/198
BeginShaderMode(alphaDiscard);
// Draw the 3D text above the red cube
Rlgl.PushMatrix();
Rlgl.Rotatef(90.0f, 1.0f, 0.0f, 0.0f);
Rlgl.Rotatef(90.0f, 0.0f, 0.0f, -1.0f);
for (int i = 0; i < layers; i++)
{
Color clr = light;
if (multicolor) clr = multi[i];
DrawTextWave3D(font, text, new Vector3(-tbox.X / 2.0f, layerDistance * i, -4.5f), fontSize, fontSpacing, lineSpacing, true, wcfg, time, clr);
}
// Draw the text boundry if set
if (showTextBoundry) DrawCubeWiresV(new Vector3(0.0f, 0.0f, -4.5f + tbox.Z / 2), tbox, dark);
Rlgl.PopMatrix();
// Don't draw the letter boundries for the 3D text below
bool slb = showLetterBoundry;
showLetterBoundry = false;
// Draw 3D options (use default font)
//-------------------------------------------------------------------------
Rlgl.PushMatrix();
Rlgl.Rotatef(180.0f, 0.0f, 1.0f, 0.0f);
string opt = $"< SIZE: {fontSize:0.0} >";
quads += opt.Length;
Vector2 m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
Vector3 pos = new(-m.X / 2.0f, 0.01f, 2.0f);
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, Color.Blue);
pos.Z += 0.5f + m.Y;
opt = $"< SPACING: {fontSpacing:0.0} >";
quads += opt.Length;
m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
pos.X = -m.X / 2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, Color.Blue);
pos.Z += 0.5f + m.Y;
opt = $"< LINE: {lineSpacing:0.0} >";
quads += opt.Length;
m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
pos.X = -m.X / 2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, Color.Blue);
pos.Z += 0.5f + m.Y;
opt = $"< LBOX: {(slb ? "ON" : "OFF"),3} >";
quads += opt.Length;
m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
pos.X = -m.X / 2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, Color.Red);
pos.Z += 0.5f + m.Y;
opt = $"< TBOX: {(showTextBoundry ? "ON" : "OFF"),3} >";
quads += opt.Length;
m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
pos.X = -m.X / 2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, Color.Red);
pos.Z += 0.5f + m.Y;
opt = $"< LAYER DISTANCE: {layerDistance:0.000} >";
quads += opt.Length;
m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
pos.X = -m.X / 2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, Color.DarkPurple);
Rlgl.PopMatrix();
//-------------------------------------------------------------------------
// Draw 3D info text (use default font)
//-------------------------------------------------------------------------
opt = "All the text displayed here is in 3D";
quads += 36;
m = MeasureTextEx(GetFontDefault(), opt, 1.0f, 0.05f);
pos = new Vector3(-m.X / 2.0f, 0.01f, 2.0f);
DrawText3D(GetFontDefault(), opt, pos, 1.0f, 0.05f, 0.0f, false, Color.DarkBlue);
pos.Z += 1.5f + m.Y;
opt = "press [Left]/[Right] to change the font size";
quads += 44;
m = MeasureTextEx(GetFontDefault(), opt, 0.6f, 0.05f);
pos.X = -m.X / 2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.05f, 0.0f, false, Color.DarkBlue);
pos.Z += 0.5f + m.Y;
opt = "press [Up]/[Down] to change the font spacing";
quads += 44;
m = MeasureTextEx(GetFontDefault(), opt, 0.6f, 0.05f);
pos.X = -m.X / 2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.05f, 0.0f, false, Color.DarkBlue);
pos.Z += 0.5f + m.Y;
opt = "press [PgUp]/[PgDown] to change the line spacing";
quads += 48;
m = MeasureTextEx(GetFontDefault(), opt, 0.6f, 0.05f);
pos.X = -m.X / 2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.05f, 0.0f, false, Color.DarkBlue);
pos.Z += 0.5f + m.Y;
opt = "press [F1] to toggle the letter boundry";
quads += 39;
m = MeasureTextEx(GetFontDefault(), opt, 0.6f, 0.05f);
pos.X = -m.X / 2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.05f, 0.0f, false, Color.DarkBlue);
pos.Z += 0.5f + m.Y;
opt = "press [F2] to toggle the text boundry";
quads += 37;
m = MeasureTextEx(GetFontDefault(), opt, 0.6f, 0.05f);
pos.X = -m.X / 2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.05f, 0.0f, false, Color.DarkBlue);
//-------------------------------------------------------------------------
showLetterBoundry = slb;
EndShaderMode();
EndMode3D();
// Draw 2D info text & stats
//-------------------------------------------------------------------------
DrawText("Drag & drop a font file to change the font!\nType something, see what happens!\n\n" +
"Press [F3] to toggle the camera", 10, 35, 10, Color.Black);
quads += TextLengthUtf8(text) * 2 * layers;
string tmp = $"{layers,2} layer(s) | {(spin ? "ORBITAL" : "FREE")} camera | {quads,4} quads ({quads * 4,4} verts)";
int width = MeasureText(tmp, 10);
DrawText(tmp, screenWidth - 20 - width, 10, 10, Color.DarkGreen);
tmp = "[Home]/[End] to add/remove 3D text layers";
width = MeasureText(tmp, 10);
DrawText(tmp, screenWidth - 20 - width, 25, 10, Color.DarkGray);
tmp = "[Insert]/[Delete] to increase/decrease distance between layers";
width = MeasureText(tmp, 10);
DrawText(tmp, screenWidth - 20 - width, 40, 10, Color.DarkGray);
tmp = "click the [CUBE] for a random color";
width = MeasureText(tmp, 10);
DrawText(tmp, screenWidth - 20 - width, 55, 10, Color.DarkGray);
tmp = "[Tab] to toggle multicolor mode";
width = MeasureText(tmp, 10);
DrawText(tmp, screenWidth - 20 - width, 70, 10, Color.DarkGray);
//-------------------------------------------------------------------------
DrawFPS(10, 10);
EndDrawing();
//----------------------------------------------------------------------------------
}
public void Unload()
{
UnloadFont(font);
}
//--------------------------------------------------------------------------------------
// Module Functions Definitions
//--------------------------------------------------------------------------------------
// Get the total length in bytes of a UTF-8 string (raylib TextLength equivalent)
private static int TextLengthUtf8(string text)
{
return Encoding.UTF8.GetByteCount(text);
}
// Draw codepoint at specified position in 3D space
private unsafe void DrawTextCodepoint3D(Font font, int codepoint, Vector3 position, float fontSize, bool backface, Color tint)
{
// Character index position in sprite font
// NOTE: In case a codepoint is not available in the font, index returned points to '?'
int index = GetGlyphIndex(font, codepoint);
float scale = fontSize / (float)font.BaseSize;
// Character destination rectangle on screen
// NOTE: We consider charsPadding on drawing
position.X += (font.Glyphs[index].OffsetX - font.GlyphPadding) * scale;
position.Z += (font.Glyphs[index].OffsetY - font.GlyphPadding) * scale;
// Character source rectangle from font texture atlas
// NOTE: We consider chars padding when drawing, it could be required for outline/glow shader effects
Rectangle srcRec = new(font.Recs[index].X - font.GlyphPadding, font.Recs[index].Y - font.GlyphPadding,
font.Recs[index].Width + 2.0f * font.GlyphPadding, font.Recs[index].Height + 2.0f * font.GlyphPadding);
float width = (font.Recs[index].Width + 2.0f * font.GlyphPadding) * scale;
float height = (font.Recs[index].Height + 2.0f * font.GlyphPadding) * scale;
if (font.Texture.Id > 0)
{
const float x = 0.0f;
const float y = 0.0f;
const float z = 0.0f;
// normalized texture coordinates of the glyph inside the font texture (0.0f -> 1.0f)
float tx = srcRec.X / font.Texture.Width;
float ty = srcRec.Y / font.Texture.Height;
float tw = (srcRec.X + srcRec.Width) / font.Texture.Width;
float th = (srcRec.Y + srcRec.Height) / font.Texture.Height;
if (showLetterBoundry) DrawCubeWiresV(new Vector3(position.X + width / 2, position.Y, position.Z + height / 2), new Vector3(width, LetterBoundrySize, height), LetterBoundryColor);
Rlgl.CheckRenderBatchLimit(4 + 4 * (backface ? 1 : 0));
Rlgl.SetTexture(font.Texture.Id);
Rlgl.PushMatrix();
Rlgl.Translatef(position.X, position.Y, position.Z);
Rlgl.Begin(DrawMode.Quads);
Rlgl.Color4ub(tint.R, tint.G, tint.B, tint.A);
// Front Face
Rlgl.Normal3f(0.0f, 1.0f, 0.0f); // Normal Pointing Up
Rlgl.TexCoord2f(tx, ty); Rlgl.Vertex3f(x, y, z); // Top Left Of The Texture and Quad
Rlgl.TexCoord2f(tx, th); Rlgl.Vertex3f(x, y, z + height); // Bottom Left Of The Texture and Quad
Rlgl.TexCoord2f(tw, th); Rlgl.Vertex3f(x + width, y, z + height); // Bottom Right Of The Texture and Quad
Rlgl.TexCoord2f(tw, ty); Rlgl.Vertex3f(x + width, y, z); // Top Right Of The Texture and Quad
if (backface)
{
// Back Face
Rlgl.Normal3f(0.0f, -1.0f, 0.0f); // Normal Pointing Down
Rlgl.TexCoord2f(tx, ty); Rlgl.Vertex3f(x, y, z); // Top Right Of The Texture and Quad
Rlgl.TexCoord2f(tw, ty); Rlgl.Vertex3f(x + width, y, z); // Top Left Of The Texture and Quad
Rlgl.TexCoord2f(tw, th); Rlgl.Vertex3f(x + width, y, z + height); // Bottom Left Of The Texture and Quad
Rlgl.TexCoord2f(tx, th); Rlgl.Vertex3f(x, y, z + height); // Bottom Right Of The Texture and Quad
}
Rlgl.End();
Rlgl.PopMatrix();
Rlgl.SetTexture(0);
}
}
// Draw a 2D text in 3D space
private unsafe void DrawText3D(Font font, string text, Vector3 position, float fontSize, float fontSpacing, float lineSpacing, bool backface, Color tint)
{
using var textNative = new Utf8Buffer(text);
sbyte* t = textNative.AsPointer();
int length = Encoding.UTF8.GetByteCount(text); // Total length in bytes of the text, scanned by codepoints in loop
float textOffsetY = 0.0f; // Offset between lines (on line break '\n')
float textOffsetX = 0.0f; // Offset X to next character to draw
float scale = fontSize / (float)font.BaseSize;
for (int i = 0; i < length;)
{
// Get next codepoint from byte string and glyph index in font
int codepointByteCount = 0;
int codepoint = GetCodepoint(&t[i], &codepointByteCount);
int index = GetGlyphIndex(font, codepoint);
// NOTE: Normally we exit the decoding sequence as soon as a bad byte is found (and return 0x3f)
// but we need to draw all of the bad bytes using the '?' symbol moving one byte
if (codepoint == 0x3f) codepointByteCount = 1;
if (codepoint == '\n')
{
// NOTE: Fixed line spacing of 1.5 line-height
// TODO: Support custom line spacing defined by user
textOffsetY += fontSize + lineSpacing;
textOffsetX = 0.0f;
}
else
{
if ((codepoint != ' ') && (codepoint != '\t'))
{
DrawTextCodepoint3D(font, codepoint, new Vector3(position.X + textOffsetX, position.Y, position.Z + textOffsetY), fontSize, backface, tint);
}
if (font.Glyphs[index].AdvanceX == 0) textOffsetX += font.Recs[index].Width * scale + fontSpacing;
else textOffsetX += font.Glyphs[index].AdvanceX * scale + fontSpacing;
}
i += codepointByteCount; // Move text bytes counter to next codepoint
}
}
// Draw a 2D text in 3D space and wave the parts that start with `~~` and end with `~~`
// This is a modified version of the original code by @Nighten found here https://github.com/NightenDushi/Raylib_DrawTextStyle
private unsafe void DrawTextWave3D(Font font, string text, Vector3 position, float fontSize, float fontSpacing, float lineSpacing, bool backface, WaveTextConfig config, float time, Color tint)
{
using var textNative = new Utf8Buffer(text);
sbyte* t = textNative.AsPointer();
int length = Encoding.UTF8.GetByteCount(text); // Total length in bytes of the text, scanned by codepoints in loop
float textOffsetY = 0.0f; // Offset between lines (on line break '\n')
float textOffsetX = 0.0f; // Offset X to next character to draw
float scale = fontSize / (float)font.BaseSize;
bool wave = false;
for (int i = 0, k = 0; i < length; ++k)
{
// Get next codepoint from byte string and glyph index in font
int codepointByteCount = 0;
int codepoint = GetCodepoint(&t[i], &codepointByteCount);
int index = GetGlyphIndex(font, codepoint);
// NOTE: Normally we exit the decoding sequence as soon as a bad byte is found (and return 0x3f)
// but we need to draw all of the bad bytes using the '?' symbol moving one byte
if (codepoint == 0x3f) codepointByteCount = 1;
if (codepoint == '\n')
{
// NOTE: Fixed line spacing of 1.5 line-height
// TODO: Support custom line spacing defined by user
textOffsetY += fontSize + lineSpacing;
textOffsetX = 0.0f;
k = 0;
}
else if (codepoint == '~')
{
if (GetCodepoint(&t[i + 1], &codepointByteCount) == '~')
{
codepointByteCount += 1;
wave = !wave;
}
}
else
{
if ((codepoint != ' ') && (codepoint != '\t'))
{
Vector3 pos = position;
if (wave) // Apply the wave effect
{
pos.X += MathF.Sin(time * config.WaveSpeed.X - k * config.WaveOffset.X) * config.WaveRange.X;
pos.Y += MathF.Sin(time * config.WaveSpeed.Y - k * config.WaveOffset.Y) * config.WaveRange.Y;
pos.Z += MathF.Sin(time * config.WaveSpeed.Z - k * config.WaveOffset.Z) * config.WaveRange.Z;
}
DrawTextCodepoint3D(font, codepoint, new Vector3(pos.X + textOffsetX, pos.Y, pos.Z + textOffsetY), fontSize, backface, tint);
}
if (font.Glyphs[index].AdvanceX == 0) textOffsetX += font.Recs[index].Width * scale + fontSpacing;
else textOffsetX += font.Glyphs[index].AdvanceX * scale + fontSpacing;
}
i += codepointByteCount; // Move text bytes counter to next codepoint
}
}
// Measure a text in 3D ignoring the `~~` chars
private unsafe Vector3 MeasureTextWave3D(Font font, string text, float fontSize, float fontSpacing, float lineSpacing)
{
using var textNative = new Utf8Buffer(text);
sbyte* t = textNative.AsPointer();
int len = Encoding.UTF8.GetByteCount(text);
int tempLen = 0; // Used to count longer text line num chars
int lenCounter = 0;
float tempTextWidth = 0.0f; // Used to count longer text line width
float scale = fontSize / (float)font.BaseSize;
float textHeight = scale;
float textWidth = 0.0f;
int letter = 0; // Current character
int index = 0; // Index position in sprite font
for (int i = 0; i < len; i++)
{
int next = 0;
letter = GetCodepoint(&t[i], &next);
index = GetGlyphIndex(font, letter);
// NOTE: normally we exit the decoding sequence as soon as a bad byte is found (and return 0x3f)
// but we need to draw all of the bad bytes using the '?' symbol so to not skip any we set next = 1
if (letter == 0x3f) next = 1;
i += next - 1;
if (letter != '\n')
{
if (letter == '~' && GetCodepoint(&t[i + 1], &next) == '~')
{
i++;
}
else
{
lenCounter++;
if (font.Glyphs[index].AdvanceX != 0) textWidth += font.Glyphs[index].AdvanceX * scale;
else textWidth += (font.Recs[index].Width + font.Glyphs[index].OffsetX) * scale;
}
}
else
{
if (tempTextWidth < textWidth) tempTextWidth = textWidth;
lenCounter = 0;
textWidth = 0.0f;
textHeight += fontSize + lineSpacing;
}
if (tempLen < lenCounter) tempLen = lenCounter;
}
if (tempTextWidth < textWidth) tempTextWidth = textWidth;
Vector3 vec = new(0, 0, 0);
vec.X = tempTextWidth + ((tempLen - 1) * fontSpacing); // Adds chars spacing to measure
vec.Y = 0.25f;
vec.Z = textHeight;
return vec;
}
// Generates a nice color with a random hue
private static Color GenerateRandomColor(float s, float v)
{
const float Phi = 0.618033988749895f; // Golden ratio conjugate
float h = (float)GetRandomValue(0, 360);
h = (h + h * Phi) % 360.0f;
return ColorFromHSV(h, s, v);
}
public static int Main()
{
// Initialization
//--------------------------------------------------------------------------------------
SetConfigFlags(ConfigFlags.Msaa4xHint | ConfigFlags.VSyncHint);
InitWindow(screenWidth, screenHeight, "raylib [text] example - 3d drawing");
DisableCursor(); // Limit cursor to relative movement inside the window
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
var game = new Text3D();
game.Init();
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
game.Update();
}
game.Unload();
// De-Initialization
//--------------------------------------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
}