UnrealXR/raylib
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

fixed text_draw_3d

Browse source
This commit is contained in:
Zean Key 2025-04-22 16:48:50 -04:00
parent 869ae8bbd2
commit 77f31178ed
1 changed files with 49 additions and 107 deletions
Download patch file Download diff file Expand all files Collapse all files

156
examples/text/text_draw_3d.c
View file

@ -65,8 +65,6 @@ typedef struct WaveTextConfig {
static void DrawTextCodepoint3D(Font font, int codepoint, Vector3 position, float fontSize, bool backface, Color tint); static void DrawTextCodepoint3D(Font font, int codepoint, Vector3 position, float fontSize, bool backface, Color tint);
// Draw a 2D text in 3D space // Draw a 2D text in 3D space
static void DrawText3D(Font font, const char *text, Vector3 position, float fontSize, float fontSpacing, float lineSpacing, bool backface, Color tint); static void DrawText3D(Font font, const char *text, Vector3 position, float fontSize, float fontSpacing, float lineSpacing, bool backface, Color tint);
// Measure a text in 3D. For some reason `MeasureTextEx()` just doesn't seem to work so i had to use this instead.
static Vector3 MeasureText3D(Font font, const char *text, float fontSize, float fontSpacing, float lineSpacing);
// Draw a 2D text in 3D space and wave the parts that start with `~~` and end with `~~`. // 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 // This is a modified version of the original code by @Nighten found here https://github.com/NightenDushi/Raylib_DrawTextStyle
@ -108,8 +106,8 @@ int main(void)
// Use the default font // Use the default font
Font font = GetFontDefault(); Font font = GetFontDefault();
float fontSize = 0.8f; float fontSize = 0.8f;
float fontSpacing = 0.5f; float fontSpacing = 0.05f;
float lineSpacing = -1.0f; float lineSpacing = -0.1f;
// Set the text (using markdown!) // Set the text (using markdown!)
char text[64] = "Hello ~~World~~ in 3D!"; char text[64] = "Hello ~~World~~ in 3D!";
@ -317,44 +315,44 @@ int main(void)
rlRotatef(180.0f, 0.0f, 1.0f, 0.0f); rlRotatef(180.0f, 0.0f, 1.0f, 0.0f);
char *opt = (char *)TextFormat("< SIZE: %2.1f >", fontSize); char *opt = (char *)TextFormat("< SIZE: %2.1f >", fontSize);
quads += TextLength(opt); quads += TextLength(opt);
Vector3 m = MeasureText3D(GetFontDefault(), opt, 0.8f, 1.0f, 0.0f); Vector2 m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
Vector3 pos = { -m.x/2.0f, 0.01f, 2.0f}; Vector3 pos = { -m.x/2.0f, 0.01f, 2.0f};
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 1.0f, 0.0f, false, BLUE); DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, BLUE);
pos.z += 0.5f + m.z * 10.0f; pos.z += 0.5f + m.y;
opt = (char *)TextFormat("< SPACING: %2.1f >", fontSpacing); opt = (char *)TextFormat("< SPACING: %2.1f >", fontSpacing);
quads += TextLength(opt); quads += TextLength(opt);
m = MeasureText3D(GetFontDefault(), opt, 0.8f, 1.0f, 0.0f); m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
pos.x = -m.x/2.0f; pos.x = -m.x/2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 1.0f, 0.0f, false, BLUE); DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, BLUE);
pos.z += 0.5f + m.z * 10.0f; pos.z += 0.5f + m.y;
opt = (char *)TextFormat("< LINE: %2.1f >", lineSpacing); opt = (char *)TextFormat("< LINE: %2.1f >", lineSpacing);
quads += TextLength(opt); quads += TextLength(opt);
m = MeasureText3D(GetFontDefault(), opt, 0.8f, 1.0f, 0.0f); m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
pos.x = -m.x/2.0f; pos.x = -m.x/2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 1.0f, 0.0f, false, BLUE); DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, BLUE);
pos.z += 1.0f + m.z * 10.0f; pos.z += 0.5f + m.y;
opt = (char *)TextFormat("< LBOX: %3s >", slb? "ON" : "OFF"); opt = (char *)TextFormat("< LBOX: %3s >", slb? "ON" : "OFF");
quads += TextLength(opt); quads += TextLength(opt);
m = MeasureText3D(GetFontDefault(), opt, 0.8f, 1.0f, 0.0f); m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
pos.x = -m.x/2.0f; pos.x = -m.x/2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 1.0f, 0.0f, false, RED); DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, RED);
pos.z += 0.5f + m.z * 10.0f; pos.z += 0.5f + m.y;
opt = (char *)TextFormat("< TBOX: %3s >", SHOW_TEXT_BOUNDRY? "ON" : "OFF"); opt = (char *)TextFormat("< TBOX: %3s >", SHOW_TEXT_BOUNDRY? "ON" : "OFF");
quads += TextLength(opt); quads += TextLength(opt);
m = MeasureText3D(GetFontDefault(), opt, 0.8f, 1.0f, 0.0f); m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
pos.x = -m.x/2.0f; pos.x = -m.x/2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 1.0f, 0.0f, false, RED); DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, RED);
pos.z += 0.5f + m.z * 10.0f; pos.z += 0.5f + m.y;
opt = (char *)TextFormat("< LAYER DISTANCE: %.3f >", layerDistance); opt = (char *)TextFormat("< LAYER DISTANCE: %.3f >", layerDistance);
quads += TextLength(opt); quads += TextLength(opt);
m = MeasureText3D(GetFontDefault(), opt, 0.8f, 1.0f, 0.0f); m = MeasureTextEx(GetFontDefault(), opt, 0.8f, 0.1f);
pos.x = -m.x/2.0f; pos.x = -m.x/2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.8f, 1.0f, 0.0f, false, DARKPURPLE); DrawText3D(GetFontDefault(), opt, pos, 0.8f, 0.1f, 0.0f, false, DARKPURPLE);
rlPopMatrix(); rlPopMatrix();
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
@ -362,44 +360,44 @@ int main(void)
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
opt = "All the text displayed here is in 3D"; opt = "All the text displayed here is in 3D";
quads += 36; quads += 36;
m = MeasureText3D(GetFontDefault(), opt, 1.0f, 0.5f, 0.0f); m = MeasureTextEx(GetFontDefault(), opt, 1.0f, 0.05f);
pos = (Vector3){-m.x/2.0f, 0.01f, 2.0f}; pos = (Vector3){-m.x/2.0f, 0.01f, 2.0f};
DrawText3D(GetFontDefault(), opt, pos, 1.0f, 0.5f, 0.0f, false, DARKBLUE); DrawText3D(GetFontDefault(), opt, pos, 1.0f, 0.05f, 0.0f, false, DARKBLUE);
pos.z += 1.5f + m.z; pos.z += 1.5f + m.y;
opt = "press [Left]/[Right] to change the font size"; opt = "press [Left]/[Right] to change the font size";
quads += 44; quads += 44;
m = MeasureText3D(GetFontDefault(), opt, 0.6f, 0.5f, 0.0f); m = MeasureTextEx(GetFontDefault(), opt, 0.6f, 0.05f);
pos.x = -m.x/2.0f; pos.x = -m.x/2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.5f, 0.0f, false, DARKBLUE); DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.05f, 0.0f, false, DARKBLUE);
pos.z += 0.5f + m.z; pos.z += 0.5f + m.y;
opt = "press [Up]/[Down] to change the font spacing"; opt = "press [Up]/[Down] to change the font spacing";
quads += 44; quads += 44;
m = MeasureText3D(GetFontDefault(), opt, 0.6f, 0.5f, 0.0f); m = MeasureTextEx(GetFontDefault(), opt, 0.6f, 0.05f);
pos.x = -m.x/2.0f; pos.x = -m.x/2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.5f, 0.0f, false, DARKBLUE); DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.05f, 0.0f, false, DARKBLUE);
pos.z += 0.5f + m.z; pos.z += 0.5f + m.y;
opt = "press [PgUp]/[PgDown] to change the line spacing"; opt = "press [PgUp]/[PgDown] to change the line spacing";
quads += 48; quads += 48;
m = MeasureText3D(GetFontDefault(), opt, 0.6f, 0.5f, 0.0f); m = MeasureTextEx(GetFontDefault(), opt, 0.6f, 0.05f);
pos.x = -m.x/2.0f; pos.x = -m.x/2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.5f, 0.0f, false, DARKBLUE); DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.05f, 0.0f, false, DARKBLUE);
pos.z += 0.5f + m.z; pos.z += 0.5f + m.y;
opt = "press [F1] to toggle the letter boundry"; opt = "press [F1] to toggle the letter boundry";
quads += 39; quads += 39;
m = MeasureText3D(GetFontDefault(), opt, 0.6f, 0.5f, 0.0f); m = MeasureTextEx(GetFontDefault(), opt, 0.6f, 0.05f);
pos.x = -m.x/2.0f; pos.x = -m.x/2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.5f, 0.0f, false, DARKBLUE); DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.05f, 0.0f, false, DARKBLUE);
pos.z += 0.5f + m.z; pos.z += 0.5f + m.y;
opt = "press [F2] to toggle the text boundry"; opt = "press [F2] to toggle the text boundry";
quads += 37; quads += 37;
m = MeasureText3D(GetFontDefault(), opt, 0.6f, 0.5f, 0.0f); m = MeasureTextEx(GetFontDefault(), opt, 0.6f, 0.05f);
pos.x = -m.x/2.0f; pos.x = -m.x/2.0f;
DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.5f, 0.0f, false, DARKBLUE); DrawText3D(GetFontDefault(), opt, pos, 0.6f, 0.05f, 0.0f, false, DARKBLUE);
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
SHOW_LETTER_BOUNDRY = slb; SHOW_LETTER_BOUNDRY = slb;
@ -462,8 +460,8 @@ static void DrawTextCodepoint3D(Font font, int codepoint, Vector3 position, floa
// Character destination rectangle on screen // Character destination rectangle on screen
// NOTE: We consider charsPadding on drawing // NOTE: We consider charsPadding on drawing
position.x += (float)(font.glyphs[index].offsetX - font.glyphPadding)/(float)font.baseSize*scale; position.x += (float)(font.glyphs[index].offsetX - font.glyphPadding)*scale;
position.z += (float)(font.glyphs[index].offsetY - font.glyphPadding)/(float)font.baseSize*scale; position.z += (float)(font.glyphs[index].offsetY - font.glyphPadding)*scale;
// Character source rectangle from font texture atlas // Character source rectangle from font texture atlas
// NOTE: We consider chars padding when drawing, it could be required for outline/glow shader effects // NOTE: We consider chars padding when drawing, it could be required for outline/glow shader effects
@ -544,7 +542,7 @@ static void DrawText3D(Font font, const char *text, Vector3 position, float font
{ {
// NOTE: Fixed line spacing of 1.5 line-height // NOTE: Fixed line spacing of 1.5 line-height
// TODO: Support custom line spacing defined by user // TODO: Support custom line spacing defined by user
textOffsetY += scale + lineSpacing*scale; textOffsetY += fontSize + lineSpacing;
textOffsetX = 0.0f; textOffsetX = 0.0f;
} }
else else
@ -554,69 +552,14 @@ static void DrawText3D(Font font, const char *text, Vector3 position, float font
DrawTextCodepoint3D(font, codepoint, (Vector3){ position.x + textOffsetX, position.y, position.z + textOffsetY }, fontSize, backface, tint); DrawTextCodepoint3D(font, codepoint, (Vector3){ position.x + textOffsetX, position.y, position.z + textOffsetY }, fontSize, backface, tint);
} }
if (font.glyphs[index].advanceX == 0) textOffsetX += (float)(font.recs[index].width + fontSpacing)*scale; if (font.glyphs[index].advanceX == 0) textOffsetX += (float)font.recs[index].width*scale + fontSpacing;
else textOffsetX += (float)(font.glyphs[index].advanceX + fontSpacing)*scale; else textOffsetX += (float)font.glyphs[index].advanceX*scale + fontSpacing;
} }
i += codepointByteCount; // Move text bytes counter to next codepoint i += codepointByteCount; // Move text bytes counter to next codepoint
} }
} }
// Measure a text in 3D. For some reason `MeasureTextEx()` just doesn't seem to work so i had to use this instead.
static Vector3 MeasureText3D(Font font, const char* text, float fontSize, float fontSpacing, float lineSpacing)
{
int len = TextLength(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++)
{
lenCounter++;
int next = 0;
letter = GetCodepoint(&text[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 (font.glyphs[index].advanceX != 0) textWidth += (font.glyphs[index].advanceX+fontSpacing)*scale;
else textWidth += (font.recs[index].width + font.glyphs[index].offsetX)*scale;
}
else
{
if (tempTextWidth < textWidth) tempTextWidth = textWidth;
lenCounter = 0;
textWidth = 0.0f;
textHeight += scale + lineSpacing*scale;
}
if (tempLen < lenCounter) tempLen = lenCounter;
}
if (tempTextWidth < textWidth) tempTextWidth = textWidth;
Vector3 vec = { 0 };
vec.x = tempTextWidth + (float)((tempLen - 1)*fontSpacing*scale); // Adds chars spacing to measure
vec.y = 0.25f;
vec.z = textHeight;
return vec;
}
// Draw a 2D text in 3D space and wave the parts that start with `~~` and end with `~~`. // 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 // This is a modified version of the original code by @Nighten found here https://github.com/NightenDushi/Raylib_DrawTextStyle
static void DrawTextWave3D(Font font, const char *text, Vector3 position, float fontSize, float fontSpacing, float lineSpacing, bool backface, WaveTextConfig* config, float time, Color tint) static void DrawTextWave3D(Font font, const char *text, Vector3 position, float fontSize, float fontSpacing, float lineSpacing, bool backface, WaveTextConfig* config, float time, Color tint)
@ -645,7 +588,7 @@ static void DrawTextWave3D(Font font, const char *text, Vector3 position, float
{ {
// NOTE: Fixed line spacing of 1.5 line-height // NOTE: Fixed line spacing of 1.5 line-height
// TODO: Support custom line spacing defined by user // TODO: Support custom line spacing defined by user
textOffsetY += scale + lineSpacing*scale; textOffsetY += fontSize + lineSpacing;
textOffsetX = 0.0f; textOffsetX = 0.0f;
k = 0; k = 0;
} }
@ -672,8 +615,8 @@ static void DrawTextWave3D(Font font, const char *text, Vector3 position, float
DrawTextCodepoint3D(font, codepoint, (Vector3){ pos.x + textOffsetX, pos.y, pos.z + textOffsetY }, fontSize, backface, tint); DrawTextCodepoint3D(font, codepoint, (Vector3){ pos.x + textOffsetX, pos.y, pos.z + textOffsetY }, fontSize, backface, tint);
} }
if (font.glyphs[index].advanceX == 0) textOffsetX += (float)(font.recs[index].width + fontSpacing)*scale; if (font.glyphs[index].advanceX == 0) textOffsetX += (float)font.recs[index].width*scale + fontSpacing;
else textOffsetX += (float)(font.glyphs[index].advanceX + fontSpacing)*scale; else textOffsetX += (float)font.glyphs[index].advanceX*scale + fontSpacing;
} }
i += codepointByteCount; // Move text bytes counter to next codepoint i += codepointByteCount; // Move text bytes counter to next codepoint
@ -698,8 +641,6 @@ static Vector3 MeasureTextWave3D(Font font, const char* text, float fontSize, fl
for (int i = 0; i < len; i++) for (int i = 0; i < len; i++)
{ {
lenCounter++;
int next = 0; int next = 0;
letter = GetCodepoint(&text[i], &next); letter = GetCodepoint(&text[i], &next);
index = GetGlyphIndex(font, letter); index = GetGlyphIndex(font, letter);
@ -717,7 +658,8 @@ static Vector3 MeasureTextWave3D(Font font, const char* text, float fontSize, fl
} }
else else
{ {
if (font.glyphs[index].advanceX != 0) textWidth += (font.glyphs[index].advanceX+fontSpacing)*scale; 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 textWidth += (font.recs[index].width + font.glyphs[index].offsetX)*scale;
} }
} }
@ -726,7 +668,7 @@ static Vector3 MeasureTextWave3D(Font font, const char* text, float fontSize, fl
if (tempTextWidth < textWidth) tempTextWidth = textWidth; if (tempTextWidth < textWidth) tempTextWidth = textWidth;
lenCounter = 0; lenCounter = 0;
textWidth = 0.0f; textWidth = 0.0f;
textHeight += scale + lineSpacing*scale; textHeight += fontSize + lineSpacing;
} }
if (tempLen < lenCounter) tempLen = lenCounter; if (tempLen < lenCounter) tempLen = lenCounter;
@ -735,7 +677,7 @@ static Vector3 MeasureTextWave3D(Font font, const char* text, float fontSize, fl
if (tempTextWidth < textWidth) tempTextWidth = textWidth; if (tempTextWidth < textWidth) tempTextWidth = textWidth;
Vector3 vec = { 0 }; Vector3 vec = { 0 };
vec.x = tempTextWidth + (float)((tempLen - 1)*fontSpacing*scale); // Adds chars spacing to measure vec.x = tempTextWidth + (float)((tempLen - 1)*fontSpacing); // Adds chars spacing to measure
vec.y = 0.25f; vec.y = 0.25f;
vec.z = textHeight; vec.z = textHeight;
@ -749,4 +691,4 @@ static Color GenerateRandomColor(float s, float v)
float h = (float)GetRandomValue(0, 360); float h = (float)GetRandomValue(0, 360);
h = fmodf((h + h*Phi), 360.0f); h = fmodf((h + h*Phi), 360.0f);
return ColorFromHSV(h, s, v); return ColorFromHSV(h, s, v);
} }