void DrawNode::drawPolygon(const Vec2 *verts, int count, const Color4F &fillColor, float borderWidth, const Color4F &borderColor)
{
CCASSERT(count >= 0, "invalid count value");
bool outline = (borderColor.a > 0.0 && borderWidth > 0.0);
auto triangle_count = outline ? (3*count - 2) : (count - 2);
auto vertex_count = 3*triangle_count;
ensureCapacity(vertex_count);
V2F_C4B_T2F_Triangle *triangles = (V2F_C4B_T2F_Triangle *)(_buffer + _bufferCount);
V2F_C4B_T2F_Triangle *cursor = triangles;
for (int i = 0; i < count-2; i++)
{
V2F_C4B_T2F_Triangle tmp = {
{verts[0], Color4B(fillColor), __t(v2fzero)},
{verts[i+1], Color4B(fillColor), __t(v2fzero)},
{verts[i+2], Color4B(fillColor), __t(v2fzero)},
};
*cursor++ = tmp;
}
if(outline)
{
struct ExtrudeVerts {Vec2 offset, n;};
struct ExtrudeVerts* extrude = (struct ExtrudeVerts*)malloc(sizeof(struct ExtrudeVerts)*count);
memset(extrude, 0, sizeof(struct ExtrudeVerts)*count);
for (int i = 0; i < count; i++)
{
Vec2 v0 = __v2f(verts[(i-1+count)%count]);
Vec2 v1 = __v2f(verts[i]);
Vec2 v2 = __v2f(verts[(i+1)%count]);
Vec2 n1 = v2fnormalize(v2fperp(v2fsub(v1, v0)));
Vec2 n2 = v2fnormalize(v2fperp(v2fsub(v2, v1)));
Vec2 offset = v2fmult(v2fadd(n1, n2), 1.0/(v2fdot(n1, n2) + 1.0));
struct ExtrudeVerts tmp = {offset, n2};
extrude[i] = tmp;
}
for(int i = 0; i < count; i++)
{
int j = (i+1)%count;
Vec2 v0 = __v2f(verts[i]);
Vec2 v1 = __v2f(verts[j]);
Vec2 n0 = extrude[i].n;
Vec2 offset0 = extrude[i].offset;
Vec2 offset1 = extrude[j].offset;
Vec2 inner0 = v2fsub(v0, v2fmult(offset0, borderWidth));
Vec2 inner1 = v2fsub(v1, v2fmult(offset1, borderWidth));
Vec2 outer0 = v2fadd(v0, v2fmult(offset0, borderWidth));
Vec2 outer1 = v2fadd(v1, v2fmult(offset1, borderWidth));
V2F_C4B_T2F_Triangle tmp1 = {
{inner0, Color4B(borderColor), __t(v2fneg(n0))},
{inner1, Color4B(borderColor), __t(v2fneg(n0))},
{outer1, Color4B(borderColor), __t(n0)}
};
*cursor++ = tmp1;
V2F_C4B_T2F_Triangle tmp2 = {
{inner0, Color4B(borderColor), __t(v2fneg(n0))},
{outer0, Color4B(borderColor), __t(n0)},
{outer1, Color4B(borderColor), __t(n0)}
};
*cursor++ = tmp2;
}
free(extrude);
}
_bufferCount += vertex_count;
_dirty = true;
}
void CCDrawNode::drawPolygon(CCPoint *verts, unsigned int count, const ccColor4F &fillColor, float borderWidth, const ccColor4F &borderColor)
{
struct ExtrudeVerts {ccVertex2F offset, n;};
struct ExtrudeVerts* extrude = (struct ExtrudeVerts*)malloc(sizeof(struct ExtrudeVerts)*count);
memset(extrude, 0, sizeof(struct ExtrudeVerts)*count);
for(unsigned int i = 0; i < count; i++)
{
ccVertex2F v0 = __v2f(verts[(i-1+count)%count]);
ccVertex2F v1 = __v2f(verts[i]);
ccVertex2F v2 = __v2f(verts[(i+1)%count]);
ccVertex2F n1 = v2fnormalize(v2fperp(v2fsub(v1, v0)));
ccVertex2F n2 = v2fnormalize(v2fperp(v2fsub(v2, v1)));
ccVertex2F offset = v2fmult(v2fadd(n1, n2), 1.0/(v2fdot(n1, n2) + 1.0));
struct ExtrudeVerts tmp = {offset, n2};
extrude[i] = tmp;
}
bool outline = (fillColor.a > 0.0 && borderWidth > 0.0);
unsigned int triangle_count = 3*count - 2;
unsigned int vertex_count = 3*triangle_count;
ensureCapacity(vertex_count);
ccV2F_C4B_T2F_Triangle *triangles = (ccV2F_C4B_T2F_Triangle *)(m_pBuffer + m_nBufferCount);
ccV2F_C4B_T2F_Triangle *cursor = triangles;
float inset = (outline == 0.0 ? 0.5 : 0.0);
for(unsigned int i = 0; i < count-2; i++)
{
ccVertex2F v0 = v2fsub(__v2f(verts[0 ]), v2fmult(extrude[0 ].offset, inset));
ccVertex2F v1 = v2fsub(__v2f(verts[i+1]), v2fmult(extrude[i+1].offset, inset));
ccVertex2F v2 = v2fsub(__v2f(verts[i+2]), v2fmult(extrude[i+2].offset, inset));
ccV2F_C4B_T2F_Triangle tmp = {
{v0, ccc4BFromccc4F(fillColor), __t(v2fzero)},
{v1, ccc4BFromccc4F(fillColor), __t(v2fzero)},
{v2, ccc4BFromccc4F(fillColor), __t(v2fzero)},
};
*cursor++ = tmp;
}
for(unsigned int i = 0; i < count; i++)
{
int j = (i+1)%count;
ccVertex2F v0 = __v2f(verts[i]);
ccVertex2F v1 = __v2f(verts[j]);
ccVertex2F n0 = extrude[i].n;
ccVertex2F offset0 = extrude[i].offset;
ccVertex2F offset1 = extrude[j].offset;
if(outline)
{
ccVertex2F inner0 = v2fsub(v0, v2fmult(offset0, borderWidth));
ccVertex2F inner1 = v2fsub(v1, v2fmult(offset1, borderWidth));
ccVertex2F outer0 = v2fadd(v0, v2fmult(offset0, borderWidth));
ccVertex2F outer1 = v2fadd(v1, v2fmult(offset1, borderWidth));
ccV2F_C4B_T2F_Triangle tmp1 = {
{inner0, ccc4BFromccc4F(borderColor), __t(v2fneg(n0))},
{inner1, ccc4BFromccc4F(borderColor), __t(v2fneg(n0))},
{outer1, ccc4BFromccc4F(borderColor), __t(n0)}
};
*cursor++ = tmp1;
ccV2F_C4B_T2F_Triangle tmp2 = {
{inner0, ccc4BFromccc4F(borderColor), __t(v2fneg(n0))},
{outer0, ccc4BFromccc4F(borderColor), __t(n0)},
{outer1, ccc4BFromccc4F(borderColor), __t(n0)}
};
*cursor++ = tmp2;
}
else {
ccVertex2F inner0 = v2fsub(v0, v2fmult(offset0, 0.5));
ccVertex2F inner1 = v2fsub(v1, v2fmult(offset1, 0.5));
ccVertex2F outer0 = v2fadd(v0, v2fmult(offset0, 0.5));
ccVertex2F outer1 = v2fadd(v1, v2fmult(offset1, 0.5));
ccV2F_C4B_T2F_Triangle tmp1 = {
{inner0, ccc4BFromccc4F(fillColor), __t(v2fzero)},
{inner1, ccc4BFromccc4F(fillColor), __t(v2fzero)},
{outer1, ccc4BFromccc4F(fillColor), __t(n0)}
};
*cursor++ = tmp1;
ccV2F_C4B_T2F_Triangle tmp2 = {
{inner0, ccc4BFromccc4F(fillColor), __t(v2fzero)},
{outer0, ccc4BFromccc4F(fillColor), __t(n0)},
{outer1, ccc4BFromccc4F(fillColor), __t(n0)}
};
*cursor++ = tmp2;
}
}
m_nBufferCount += vertex_count;
m_bDirty = true;
free(extrude);
}
void DrawNode::drawSegment(const Vec2 &from, const Vec2 &to, float radius, const Color4F &color)
{
unsigned int vertex_count = 6*3;
ensureCapacity(vertex_count);
Vec2 a = __v2f(from);
Vec2 b = __v2f(to);
Vec2 n = v2fnormalize(v2fperp(v2fsub(b, a)));
Vec2 t = v2fperp(n);
Vec2 nw = v2fmult(n, radius);
Vec2 tw = v2fmult(t, radius);
Vec2 v0 = v2fsub(b, v2fadd(nw, tw));
Vec2 v1 = v2fadd(b, v2fsub(nw, tw));
Vec2 v2 = v2fsub(b, nw);
Vec2 v3 = v2fadd(b, nw);
Vec2 v4 = v2fsub(a, nw);
Vec2 v5 = v2fadd(a, nw);
Vec2 v6 = v2fsub(a, v2fsub(nw, tw));
Vec2 v7 = v2fadd(a, v2fadd(nw, tw));
V2F_C4B_T2F_Triangle *triangles = (V2F_C4B_T2F_Triangle *)(_buffer + _bufferCount);
V2F_C4B_T2F_Triangle triangles0 = {
{v0, Color4B(color), __t(v2fneg(v2fadd(n, t)))},
{v1, Color4B(color), __t(v2fsub(n, t))},
{v2, Color4B(color), __t(v2fneg(n))},
};
triangles[0] = triangles0;
V2F_C4B_T2F_Triangle triangles1 = {
{v3, Color4B(color), __t(n)},
{v1, Color4B(color), __t(v2fsub(n, t))},
{v2, Color4B(color), __t(v2fneg(n))},
};
triangles[1] = triangles1;
V2F_C4B_T2F_Triangle triangles2 = {
{v3, Color4B(color), __t(n)},
{v4, Color4B(color), __t(v2fneg(n))},
{v2, Color4B(color), __t(v2fneg(n))},
};
triangles[2] = triangles2;
V2F_C4B_T2F_Triangle triangles3 = {
{v3, Color4B(color), __t(n)},
{v4, Color4B(color), __t(v2fneg(n))},
{v5, Color4B(color), __t(n) },
};
triangles[3] = triangles3;
V2F_C4B_T2F_Triangle triangles4 = {
{v6, Color4B(color), __t(v2fsub(t, n))},
{v4, Color4B(color), __t(v2fneg(n)) },
{v5, Color4B(color), __t(n)},
};
triangles[4] = triangles4;
V2F_C4B_T2F_Triangle triangles5 = {
{v6, Color4B(color), __t(v2fsub(t, n))},
{v7, Color4B(color), __t(v2fadd(n, t))},
{v5, Color4B(color), __t(n)},
};
triangles[5] = triangles5;
_bufferCount += vertex_count;
_dirty = true;
}
void CCDrawNode::drawSegment(const CCPoint &from, const CCPoint &to, float radius, const ccColor4F &color)
{
unsigned int vertex_count = 6*3;
ensureCapacity(vertex_count);
ccVertex2F a = __v2f(from);
ccVertex2F b = __v2f(to);
ccVertex2F n = v2fnormalize(v2fperp(v2fsub(b, a)));
ccVertex2F t = v2fperp(n);
ccVertex2F nw = v2fmult(n, radius);
ccVertex2F tw = v2fmult(t, radius);
ccVertex2F v0 = v2fsub(b, v2fadd(nw, tw));
ccVertex2F v1 = v2fadd(b, v2fsub(nw, tw));
ccVertex2F v2 = v2fsub(b, nw);
ccVertex2F v3 = v2fadd(b, nw);
ccVertex2F v4 = v2fsub(a, nw);
ccVertex2F v5 = v2fadd(a, nw);
ccVertex2F v6 = v2fsub(a, v2fsub(nw, tw));
ccVertex2F v7 = v2fadd(a, v2fadd(nw, tw));
ccV2F_C4B_T2F_Triangle *triangles = (ccV2F_C4B_T2F_Triangle *)(m_pBuffer + m_nBufferCount);
ccV2F_C4B_T2F_Triangle triangles0 = {
{v0, ccc4BFromccc4F(color), __t(v2fneg(v2fadd(n, t)))},
{v1, ccc4BFromccc4F(color), __t(v2fsub(n, t))},
{v2, ccc4BFromccc4F(color), __t(v2fneg(n))},
};
triangles[0] = triangles0;
ccV2F_C4B_T2F_Triangle triangles1 = {
{v3, ccc4BFromccc4F(color), __t(n)},
{v1, ccc4BFromccc4F(color), __t(v2fsub(n, t))},
{v2, ccc4BFromccc4F(color), __t(v2fneg(n))},
};
triangles[1] = triangles1;
ccV2F_C4B_T2F_Triangle triangles2 = {
{v3, ccc4BFromccc4F(color), __t(n)},
{v4, ccc4BFromccc4F(color), __t(v2fneg(n))},
{v2, ccc4BFromccc4F(color), __t(v2fneg(n))},
};
triangles[2] = triangles2;
ccV2F_C4B_T2F_Triangle triangles3 = {
{v3, ccc4BFromccc4F(color), __t(n)},
{v4, ccc4BFromccc4F(color), __t(v2fneg(n))},
{v5, ccc4BFromccc4F(color), __t(n) },
};
triangles[3] = triangles3;
ccV2F_C4B_T2F_Triangle triangles4 = {
{v6, ccc4BFromccc4F(color), __t(v2fsub(t, n))},
{v4, ccc4BFromccc4F(color), __t(v2fneg(n)) },
{v5, ccc4BFromccc4F(color), __t(n)},
};
triangles[4] = triangles4;
ccV2F_C4B_T2F_Triangle triangles5 = {
{v6, ccc4BFromccc4F(color), __t(v2fsub(t, n))},
{v7, ccc4BFromccc4F(color), __t(v2fadd(n, t))},
{v5, ccc4BFromccc4F(color), __t(n)},
};
triangles[5] = triangles5;
m_nBufferCount += vertex_count;
m_bDirty = true;
}