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Center axis labels.

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This commit is contained in:
leo 2015-04-06 00:36:27 +00:00
parent e7b436e85f
commit 3081ed2df8
3 changed files with 74 additions and 33 deletions
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30
common/texfont.cpp
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@ -227,3 +227,33 @@ void TexFont::PrintText(float Left, float Top, float Z, const char* Text) const
delete[] Verts; delete[] Verts;
} }
void TexFont::GetGlyphQuad(float Left, float Top, float Z, char 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;
*Buffer++ = Z;
*Buffer++ = mGlyphs[Glyph].right;
*Buffer++ = mGlyphs[Glyph].top;
}

1
common/texfont.h
View file

@ -23,6 +23,7 @@ public:
void Release(); void Release();
void PrintText(float Left, float Top, float Z, const char* Text) const; void PrintText(float Left, float Top, float Z, const char* Text) const;
void GetGlyphQuad(float Left, float Top, float Z, char Glyph, float* Buffer) const;
void GetStringDimensions(int* cx, int* cy, const char* Text) const; void GetStringDimensions(int* cx, int* cy, const char* Text) const;
protected: protected:

76
common/view.cpp
View file

@ -1266,57 +1266,67 @@ void View::DrawAxes()
{ {
// glClear(GL_DEPTH_BUFFER_BIT); // glClear(GL_DEPTH_BUFFER_BIT);
lcMatrix44 Mats[3]; const float Verts[28 * 3] =
Mats[0] = mCamera->mWorldView;
Mats[0].SetTranslation(lcVector3(0, 0, 0));
Mats[1] = lcMul(lcMatrix44(lcVector4(0, 1, 0, 0), lcVector4(1, 0, 0, 0), lcVector4(0, 0, 1, 0), lcVector4(0, 0, 0, 1)), Mats[0]);
Mats[2] = lcMul(lcMatrix44(lcVector4(0, 0, 1, 0), lcVector4(0, 1, 0, 0), lcVector4(1, 0, 0, 0), lcVector4(0, 0, 0, 1)), Mats[0]);
lcVector3 pts[3] =
{ {
lcMul30(lcVector3(20, 0, 0), Mats[0]), 0.00f, 0.00f, 0.00f, 20.00f, 0.00f, 0.00f, 12.00f, 3.00f, 0.00f, 12.00f, 2.12f, 2.12f,
lcMul30(lcVector3(0, 20, 0), Mats[0]), 12.00f, 0.00f, 3.00f, 12.00f, -2.12f, 2.12f, 12.00f, -3.00f, 0.00f, 12.00f, -2.12f, -2.12f,
lcMul30(lcVector3(0, 0, 20), Mats[0]), 12.00f, 0.00f, -3.00f, 12.00f, 2.12f, -2.12f, 0.00f, 20.00f, 0.00f, 3.00f, 12.00f, 0.00f,
2.12f, 12.00f, 2.12f, 0.00f, 12.00f, 3.00f, -2.12f, 12.00f, 2.12f, -3.00f, 12.00f, 0.00f,
-2.12f, 12.00f, -2.12f, 0.00f, 12.00f, -3.00f, 2.12f, 12.00f, -2.12f, 0.00f, 0.00f, 20.00f,
0.00f, 3.00f, 12.00f, 2.12f, 2.12f, 12.00f, 3.00f, 0.00f, 12.00f, 2.12f, -2.12f, 12.00f,
0.00f, -3.00f, 12.00f, -2.12f, -2.12f, 12.00f, -3.00f, 0.00f, 12.00f, -2.12f, 2.12f, 12.00f,
}; };
const lcVector4 Colors[3] = GLushort LineIndices[6] = { 0, 1, 0, 10, 0, 19 };
GLushort TriIndices[72] =
{ {
lcVector4(0.8f, 0.0f, 0.0f, 1.0f), 1, 2, 3, 1, 3, 4, 1, 4, 5, 1, 5, 6, 1, 6, 7, 1, 7, 8, 1, 8, 9, 1, 9, 2,
lcVector4(0.0f, 0.8f, 0.0f, 1.0f), 10, 11, 12, 10, 12, 13, 10, 13, 14, 10, 14, 15, 10, 15, 16, 10, 16, 17, 10, 17, 18, 10, 18, 11,
lcVector4(0.0f, 0.0f, 0.8f, 1.0f) 19, 20, 21, 19, 21, 22, 19, 22, 23, 19, 23, 24, 19, 24, 25, 19, 25, 26, 19, 26, 27, 19, 27, 20
}; };
lcMatrix44 TranslationMatrix = lcMatrix44Translation(lcVector3(25.375f, 25.375f, 0.0f));
lcMatrix44 WorldViewMatrix = mCamera->mWorldView;
WorldViewMatrix.SetTranslation(lcVector3(0, 0, 0));
mContext->SetProjectionMatrix(lcMatrix44Ortho(0, mWidth, 0, mHeight, -50, 50)); mContext->SetProjectionMatrix(lcMatrix44Ortho(0, mWidth, 0, mHeight, -50, 50));
mContext->SetWorldViewMatrix(lcMatrix44Translation(lcVector3(25.375f, 25.375f, 0.0f))); mContext->SetWorldViewMatrix(lcMul(WorldViewMatrix, TranslationMatrix));
// Draw the arrows.
lcVector3 Verts[11];
Verts[0] = lcVector3(0.0f, 0.0f, 0.0f);
glVertexPointer(3, GL_FLOAT, 0, Verts); glVertexPointer(3, GL_FLOAT, 0, Verts);
for (int i = 0; i < 3; i++) glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
{ glDrawElements(GL_LINES, 6, GL_UNSIGNED_SHORT, LineIndices);
glColor4fv(Colors[i]); glColor4f(0.8f, 0.0f, 0.0f, 1.0f),
Verts[1] = pts[i]; glDrawElements(GL_TRIANGLES, 24, GL_UNSIGNED_SHORT, TriIndices);
glColor4f(0.0f, 0.8f, 0.0f, 1.0f);
for (int j = 0; j < 9; j++) glDrawElements(GL_TRIANGLES, 24, GL_UNSIGNED_SHORT, TriIndices + 24);
Verts[j+2] = lcMul30(lcVector3(12.0f, cosf(LC_2PI * j / 8) * 3.0f, sinf(LC_2PI * j / 8) * 3.0f), Mats[i]); glColor4f(0.0f, 0.0f, 0.8f, 1.0f);
glDrawElements(GL_TRIANGLES, 24, GL_UNSIGNED_SHORT, TriIndices + 48);
glDrawArrays(GL_LINES, 0, 2);
glDrawArrays(GL_TRIANGLE_FAN, 1, 10);
}
mContext->SetWorldViewMatrix(TranslationMatrix);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
gTexFont.MakeCurrent(); gTexFont.MakeCurrent();
glEnable(GL_TEXTURE_2D); glEnable(GL_TEXTURE_2D);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND); glEnable(GL_BLEND);
float TextBuffer[4 * 5 * 3];
lcVector3 PosX = lcMul30(lcVector3(25.0f, 0.0f, 0.0f), WorldViewMatrix);
gTexFont.GetGlyphQuad(PosX.x, PosX.y, PosX.z, 'X', TextBuffer);
lcVector3 PosY = lcMul30(lcVector3(0.0f, 25.0f, 0.0f), WorldViewMatrix);
gTexFont.GetGlyphQuad(PosY.x, PosY.y, PosY.z, 'Y', TextBuffer + 5 * 4);
lcVector3 PosZ = lcMul30(lcVector3(0.0f, 0.0f, 25.0f), WorldViewMatrix);
gTexFont.GetGlyphQuad(PosZ.x, PosZ.y, PosZ.z, 'Z', TextBuffer + 5 * 4 * 2);
glVertexPointer(3, GL_FLOAT, 5 * sizeof(float), TextBuffer);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, 5 * sizeof(float), TextBuffer + 3);
glColor4f(0.0f, 0.0f, 0.0f, 1.0f); glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
gTexFont.PrintText(pts[0][0], pts[0][1], 40.0f, "X"); glDrawArrays(GL_QUADS, 0, 4 * 3);
gTexFont.PrintText(pts[1][0], pts[1][1], 40.0f, "Y");
gTexFont.PrintText(pts[2][0], pts[2][1], 40.0f, "Z"); glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisable(GL_BLEND); glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D); glDisable(GL_TEXTURE_2D);