Miroirs/leocad
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mirror of https://github.com/leozide/leocad synced 2024-12-26 21:58:44 +01:00
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leocad/common/texfont.cpp
Leonardo Zide a9ab7c0c64 Removed GL calls in texfont.
2021-11-21 12:16:19 -08:00

337 lines
20 KiB
C++
Raw Blame History

#include "lc_global.h"
#include <string.h>
#include "texfont.h"
#include "lc_context.h"
#include "lc_texture.h"
#include "image.h"
static const unsigned char TextureData[2048] =
{
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0xe0, 0x81, 0x7f, 0xc3, 0x80, 0x7f, 0x00, 0x00, 0x0c, 0x03, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x1b, 0x1e, 0xc3, 0x3e, 0x0c, 0x7f, 0x00, 0x0c, 0x03, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00,
0x30, 0x0f, 0x33, 0xc3, 0x00, 0x0c, 0x00, 0x00, 0x0c, 0x83, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x06, 0x33, 0xc3, 0x00, 0x0c, 0x00, 0x00, 0x0c, 0x03, 0x1b, 0x00, 0x00, 0x00, 0x00, 0x00,
0x30, 0x0f, 0x00, 0xc3, 0x00, 0x0c, 0x00, 0x00, 0x0c, 0x03, 0x1b, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0x0d, 0x00, 0xc3, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x03, 0x1b, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xc3, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x66, 0x00, 0x00, 0x00, 0xff, 0x0d, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x66, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x00, 0x00, 0xfc, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
static const unsigned char GlyphData[] =
{
0x20, 0x4b, 0x80, 0x04, 0x21, 0x1e, 0x70, 0x05, 0x23, 0x4f, 0x80, 0x09, 0x24, 0x67, 0x70, 0x09, 0x25, 0x70, 0x70, 0x0d, 0x26, 0x03, 0x80, 0x0b, 0x28, 0x17, 0x80, 0x05, 0x29, 0x1c, 0x80, 0x05,
0x2a, 0x0e, 0x80, 0x09, 0x2b, 0x26, 0x80, 0x09, 0x2c, 0x16, 0x70, 0x04, 0x2d, 0x21, 0x80, 0x05, 0x2e, 0x1a, 0x70, 0x04, 0x2f, 0x3d, 0x70, 0x04, 0x30, 0x6f, 0x24, 0x09, 0x31, 0x01, 0x37, 0x09,
0x32, 0x0a, 0x37, 0x09, 0x33, 0x13, 0x37, 0x09, 0x34, 0x1c, 0x37, 0x09, 0x35, 0x25, 0x37, 0x09, 0x36, 0x2e, 0x37, 0x09, 0x37, 0x37, 0x37, 0x09, 0x38, 0x40, 0x37, 0x09, 0x39, 0x49, 0x37, 0x09,
0x3a, 0x27, 0x70, 0x04, 0x3b, 0x23, 0x70, 0x04, 0x3c, 0x2b, 0x70, 0x09, 0x3d, 0x2f, 0x80, 0x09, 0x3e, 0x34, 0x70, 0x09, 0x3f, 0x41, 0x70, 0x0a, 0x40, 0x57, 0x70, 0x10, 0x41, 0x52, 0x37, 0x0c,
0x42, 0x5e, 0x37, 0x0c, 0x43, 0x6a, 0x37, 0x0c, 0x44, 0x01, 0x4a, 0x0c, 0x45, 0x0d, 0x4a, 0x0b, 0x46, 0x18, 0x4a, 0x0a, 0x47, 0x22, 0x4a, 0x0d, 0x48, 0x2f, 0x4a, 0x0c, 0x49, 0x3b, 0x4a, 0x05,
0x4a, 0x40, 0x4a, 0x09, 0x4b, 0x49, 0x4a, 0x0b, 0x4c, 0x54, 0x4a, 0x0a, 0x4d, 0x5e, 0x4a, 0x0e, 0x4e, 0x6c, 0x4a, 0x0c, 0x4f, 0x01, 0x5d, 0x0d, 0x50, 0x0e, 0x5d, 0x0b, 0x51, 0x19, 0x5d, 0x0d,
0x52, 0x26, 0x5d, 0x0c, 0x53, 0x32, 0x5d, 0x0b, 0x54, 0x3d, 0x5d, 0x0a, 0x55, 0x47, 0x5d, 0x0c, 0x56, 0x53, 0x5d, 0x0b, 0x57, 0x5e, 0x5d, 0x0f, 0x58, 0x6d, 0x5d, 0x0b, 0x59, 0x01, 0x70, 0x0b,
0x5a, 0x0c, 0x70, 0x0a, 0x5b, 0x41, 0x80, 0x05, 0x5d, 0x46, 0x80, 0x05, 0x5f, 0x38, 0x80, 0x09, 0x61, 0x01, 0x11, 0x0a, 0x62, 0x0b, 0x11, 0x0a, 0x63, 0x15, 0x11, 0x09, 0x64, 0x1e, 0x11, 0x0a,
0x65, 0x28, 0x11, 0x0a, 0x66, 0x32, 0x11, 0x06, 0x67, 0x38, 0x11, 0x0a, 0x68, 0x42, 0x11, 0x0a, 0x69, 0x4c, 0x11, 0x04, 0x6a, 0x50, 0x11, 0x04, 0x6b, 0x54, 0x11, 0x09, 0x6c, 0x5d, 0x11, 0x04,
0x6d, 0x61, 0x11, 0x0e, 0x6e, 0x6f, 0x11, 0x0a, 0x6f, 0x01, 0x24, 0x0a, 0x70, 0x0b, 0x24, 0x0a, 0x71, 0x15, 0x24, 0x0a, 0x72, 0x1f, 0x24, 0x07, 0x73, 0x26, 0x24, 0x09, 0x74, 0x2f, 0x24, 0x06,
0x75, 0x35, 0x24, 0x0a, 0x76, 0x3f, 0x24, 0x09, 0x77, 0x48, 0x24, 0x0e, 0x78, 0x56, 0x24, 0x08, 0x79, 0x5e, 0x24, 0x09, 0x7a, 0x67, 0x24, 0x08, 0x7b, 0x4b, 0x70, 0x06, 0x7d, 0x51, 0x70, 0x06,
0x00
};
// ============================================================================
TexFont gTexFont;
TexFont::TexFont()
{
memset(&mGlyphs, 0, sizeof(mGlyphs));
}
bool TexFont::Initialize(lcContext* Context)
{
if (mTexture)
return true;
mFontHeight = 16;
mTextureWidth = 128;
mTextureHeight = 128;
Image Image;
Image.Allocate(mTextureWidth, mTextureHeight, lcPixelFormat::L8A8);
unsigned char* ExpandedData = Image.mData;
for (unsigned int TexelIdx = 0; TexelIdx < sizeof(TextureData) * 8; TexelIdx++)
{
const unsigned char Texel = TextureData[TexelIdx / 8] & (1 << (TexelIdx % 8)) ? 255 : 0;
ExpandedData[TexelIdx * 2] = ExpandedData[TexelIdx * 2 + 1] = Texel;
}
mTexture = new lcTexture();
mTexture->SetImage(std::move(Image), LC_TEXTURE_WRAPU | LC_TEXTURE_WRAPV | LC_TEXTURE_POINT);
mTexture->Upload(Context);
const unsigned char* Ptr = GlyphData;
for (;;)
{
unsigned char Glyph = *Ptr++;
if (!Glyph)
break;
mGlyphs[Glyph].left = *Ptr++;
mGlyphs[Glyph].bottom = *Ptr++;
mGlyphs[Glyph].width = *Ptr++;
mGlyphs[Glyph].right = mGlyphs[Glyph].left + mGlyphs[Glyph].width;
mGlyphs[Glyph].top = mGlyphs[Glyph].bottom - mFontHeight;
mGlyphs[Glyph].left /= mTextureWidth;
mGlyphs[Glyph].right /= mTextureWidth;
mGlyphs[Glyph].top /= mTextureHeight;
mGlyphs[Glyph].bottom /= mTextureHeight;
}
return true;
}
void TexFont::Reset()
{
mTexture = 0;
}
void TexFont::GetStringDimensions(int* cx, int* cy, const char* Text) const
{
*cx = 0;
*cy = mFontHeight;
while (*Text != 0)
{
*cx += mGlyphs[(int)(*Text)].width;
Text++;
}
}
void TexFont::PrintText(lcContext* Context, float Left, float Top, float Z, const char* Text) const
{
const size_t Length = strlen(Text);
if (!Length)
return;
float* Verts = new float[6 * 5 * Length];
float* CurVert = Verts;
while (*Text)
{
int ch = *Text;
*CurVert++ = Left;
*CurVert++ = Top;
*CurVert++ = Z;
*CurVert++ = mGlyphs[ch].left;
*CurVert++ = mGlyphs[ch].top;
*CurVert++ = Left;
*CurVert++ = Top - mFontHeight;
*CurVert++ = Z;
*CurVert++ = mGlyphs[ch].left;
*CurVert++ = mGlyphs[ch].bottom;
*CurVert++ = Left + mGlyphs[ch].width;
*CurVert++ = Top - mFontHeight;
*CurVert++ = Z;
*CurVert++ = mGlyphs[ch].right;
*CurVert++ = mGlyphs[ch].bottom;
*CurVert++ = Left + mGlyphs[ch].width;
*CurVert++ = Top - mFontHeight;
*CurVert++ = Z;
*CurVert++ = mGlyphs[ch].right;
*CurVert++ = mGlyphs[ch].bottom;
*CurVert++ = Left + mGlyphs[ch].width;
*CurVert++ = Top;
*CurVert++ = Z;
*CurVert++ = mGlyphs[ch].right;
*CurVert++ = mGlyphs[ch].top;
*CurVert++ = Left;
*CurVert++ = Top;
*CurVert++ = Z;
*CurVert++ = mGlyphs[ch].left;
*CurVert++ = mGlyphs[ch].top;
Left += mGlyphs[ch].width;
Text++;
}
Context->SetVertexBufferPointer(Verts);
Context->SetVertexFormat(0, 3, 0, 2, 0, false);
Context->DrawPrimitives(GL_TRIANGLES, 0, 6 * (GLsizei)Length);
delete[] Verts;
}
void TexFont::GetTriangles(const lcMatrix44& Transform, const char* Text, float* Buffer) const
{
float Width = 0.0f;
for (const char* ch = Text; *ch; ch++)
{
const int Glyph = *ch;
Width += mGlyphs[Glyph].width;
}
float Left = -Width / 2.0f;
const float Top = mFontHeight / 2.0f;
const float Z = 0.0f;
while (*Text)
{
int ch = *Text;
lcVector3 Points[4] =
{
lcVector3(Left, Top, Z),
lcVector3(Left, Top - mFontHeight, Z),
lcVector3(Left + mGlyphs[ch].width, Top - mFontHeight, Z),
lcVector3(Left + mGlyphs[ch].width, Top, Z),
};
for (int PointIdx = 0; PointIdx < 4; PointIdx++)
Points[PointIdx] = lcMul31(Points[PointIdx], Transform);
*Buffer++ = Points[0].x;
*Buffer++ = Points[0].y;
*Buffer++ = Points[0].z;
*Buffer++ = mGlyphs[ch].left;
*Buffer++ = mGlyphs[ch].top;
*Buffer++ = Points[1].x;
*Buffer++ = Points[1].y;
*Buffer++ = Points[1].z;
*Buffer++ = mGlyphs[ch].left;
*Buffer++ = mGlyphs[ch].bottom;
*Buffer++ = Points[2].x;
*Buffer++ = Points[2].y;
*Buffer++ = Points[2].z;
*Buffer++ = mGlyphs[ch].right;
*Buffer++ = mGlyphs[ch].bottom;
*Buffer++ = Points[2].x;
*Buffer++ = Points[2].y;
*Buffer++ = Points[2].z;
*Buffer++ = mGlyphs[ch].right;
*Buffer++ = mGlyphs[ch].bottom;
*Buffer++ = Points[3].x;
*Buffer++ = Points[3].y;
*Buffer++ = Points[3].z;
*Buffer++ = mGlyphs[ch].right;
*Buffer++ = mGlyphs[ch].top;
*Buffer++ = Points[0].x;
*Buffer++ = Points[0].y;
*Buffer++ = Points[0].z;
*Buffer++ = mGlyphs[ch].left;
*Buffer++ = mGlyphs[ch].top;
Left += mGlyphs[ch].width;
Text++;
}
}
void TexFont::GetGlyphTriangles(float Left, float Top, float Z, int Glyph, float* Buffer) const
{
Left -= mGlyphs[Glyph].width / 2.0f;
Top += mFontHeight / 2.0f;
*Buffer++ = Left;
*Buffer++ = Top;
*Buffer++ = Z;
*Buffer++ = mGlyphs[Glyph].left;
*Buffer++ = mGlyphs[Glyph].top;
*Buffer++ = Left;
*Buffer++ = Top - mFontHeight;
*Buffer++ = Z;
*Buffer++ = mGlyphs[Glyph].left;
*Buffer++ = mGlyphs[Glyph].bottom;
*Buffer++ = Left + mGlyphs[Glyph].width;
*Buffer++ = Top - mFontHeight;
*Buffer++ = Z;
*Buffer++ = mGlyphs[Glyph].right;
*Buffer++ = mGlyphs[Glyph].bottom;
*Buffer++ = Left + mGlyphs[Glyph].width;
*Buffer++ = Top - mFontHeight;
*Buffer++ = Z;
*Buffer++ = mGlyphs[Glyph].right;
*Buffer++ = mGlyphs[Glyph].bottom;
*Buffer++ = Left + mGlyphs[Glyph].width;
*Buffer++ = Top;
*Buffer++ = Z;
*Buffer++ = mGlyphs[Glyph].right;
*Buffer++ = mGlyphs[Glyph].top;
*Buffer++ = Left;
*Buffer++ = Top;
*Buffer++ = Z;
*Buffer++ = mGlyphs[Glyph].left;
*Buffer++ = mGlyphs[Glyph].top;
}
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