void DrawFill(const RasterPoint *points, unsigned start) const {
/* triangulate the polygon */
AllocatedArray<GLushort> triangle_buffer;
unsigned idx_count = PolygonToTriangles(points + start, size,
triangle_buffer);
if (idx_count == 0)
return;
/* add offset to all vertex indices */
for (unsigned i = 0; i < idx_count; ++i)
triangle_buffer[i] += start;
glDrawElements(GL_TRIANGLES, idx_count, GL_UNSIGNED_SHORT,
triangle_buffer.begin());
}
void
Canvas::DrawPolygon(const RasterPoint *points, unsigned num_points)
{
if (brush.IsHollow() && !pen.IsDefined())
return;
#ifdef USE_GLSL
OpenGL::solid_shader->Use();
#endif
ScopeVertexPointer vp(points);
if (!brush.IsHollow() && num_points >= 3) {
brush.Bind();
std::unique_ptr<const GLBlend> blend;
if(!brush.IsOpaque()) {
blend = std::make_unique<const GLBlend>(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
static AllocatedArray<GLushort> triangle_buffer;
unsigned idx_count = PolygonToTriangles(points, num_points,
triangle_buffer);
if (idx_count > 0)
glDrawElements(GL_TRIANGLES, idx_count, GL_UNSIGNED_SHORT,
triangle_buffer.begin());
}
if (IsPenOverBrush()) {
pen.Bind();
if (pen.GetWidth() <= 2) {
glDrawArrays(GL_LINE_LOOP, 0, num_points);
} else {
unsigned vertices = LineToTriangles(points, num_points, vertex_buffer,
pen.GetWidth(), true);
if (vertices > 0) {
vp.Update(vertex_buffer.begin());
glDrawArrays(GL_TRIANGLE_STRIP, 0, vertices);
}
}
pen.Unbind();
}
}
void
Canvas::DrawPolygon(const RasterPoint *points, unsigned num_points)
{
if (brush.IsHollow() && !pen.IsDefined())
return;
glVertexPointer(2, GL_VALUE, 0, points);
if (!brush.IsHollow() && num_points >= 3) {
brush.Set();
static AllocatedArray<GLushort> triangle_buffer;
unsigned idx_count = PolygonToTriangles(points, num_points,
triangle_buffer);
if (idx_count > 0)
glDrawElements(GL_TRIANGLES, idx_count, GL_UNSIGNED_SHORT,
triangle_buffer.begin());
}
if (pen_over_brush()) {
pen.Bind();
if (pen.GetWidth() <= 2) {
glDrawArrays(GL_LINE_LOOP, 0, num_points);
} else {
unsigned vertices = LineToTriangles(points, num_points, vertex_buffer,
pen.GetWidth(), true);
if (vertices > 0) {
glVertexPointer(2, GL_VALUE, 0, vertex_buffer.begin());
glDrawArrays(GL_TRIANGLE_STRIP, 0, vertices);
}
}
pen.Unbind();
}
}
void Flasher::RenderSetup(RenderDevice* pd3dDevice)
{
std::vector<RenderVertex> vvertex;
GetRgVertex(vvertex);
numVertices = (unsigned int)vvertex.size();
std::vector<WORD> vtri;
{
std::vector<unsigned int> vpoly(numVertices);
for (unsigned int i = 0; i < numVertices; i++)
vpoly[i] = i;
PolygonToTriangles(vvertex, vpoly, vtri);
}
numPolys = (int)(vtri.size()/3);
if (numPolys == 0)
{
// no polys to render leave vertex buffer undefined
return;
}
if (dynamicIndexBuffer)
dynamicIndexBuffer->release();
pd3dDevice->CreateIndexBuffer(numPolys * 3, 0, IndexBuffer::FMT_INDEX16, &dynamicIndexBuffer);
NumVideoBytes += numPolys * 3 * sizeof(WORD);
WORD* bufi;
dynamicIndexBuffer->lock(0, 0, (void**)&bufi, 0);
memcpy(bufi, vtri.data(), vtri.size()*sizeof(WORD));
dynamicIndexBuffer->unlock();
if (dynamicVertexBuffer)
dynamicVertexBuffer->release();
pd3dDevice->CreateVertexBuffer(numVertices, USAGE_DYNAMIC, MY_D3DFVF_TEX, &dynamicVertexBuffer);
NumVideoBytes += (int)(numVertices*sizeof(Vertex3D_TexelOnly));
if (vertices)
delete[] vertices;
vertices = new Vertex3D_TexelOnly[numVertices];
Pin3D * const ppin3d = &g_pplayer->m_pin3d;
minx = FLT_MAX;
miny = FLT_MAX;
maxx = -FLT_MAX;
maxy = -FLT_MAX;
for (unsigned int i = 0; i < numVertices; i++)
{
const RenderVertex * const pv0 = &vvertex[i];
vertices[i].x = pv0->x;
vertices[i].y = pv0->y;
vertices[i].z = 0;
if (pv0->x > maxx) maxx = pv0->x;
if (pv0->x < minx) minx = pv0->x;
if (pv0->y > maxy) maxy = pv0->y;
if (pv0->y < miny) miny = pv0->y;
}
const float inv_width = 1.0f / (maxx - minx);
const float inv_height = 1.0f / (maxy - miny);
const float inv_tablewidth = 1.0f / (m_ptable->m_right - m_ptable->m_left);
const float inv_tableheight = 1.0f / (m_ptable->m_bottom - m_ptable->m_top);
m_d.m_vCenter.x = minx + ((maxx - minx)*0.5f);
m_d.m_vCenter.y = miny + ((maxy - miny)*0.5f);
for (unsigned int i = 0; i < numVertices; i++)
{
if (m_d.m_imagealignment == ImageModeWrap)
{
vertices[i].tu = (vertices[i].x - minx)*inv_width;
vertices[i].tv = (vertices[i].y - miny)*inv_height;
}
else
{
vertices[i].tu = vertices[i].x*inv_tablewidth;
vertices[i].tv = vertices[i].y*inv_tableheight;
}
}
}
bool
XShape::BuildIndices(unsigned thinning_level, unsigned min_distance)
{
assert(indices[thinning_level] == NULL);
unsigned short *idx, *idx_count;
unsigned num_points = 0;
for (unsigned i=0; i < num_lines; i++)
num_points += lines[i];
if (type == MS_SHAPE_LINE) {
if (num_points <= 2)
return false; // line cannot be simplified, so don't create indices
index_count[thinning_level] = idx_count =
new GLushort[num_lines + num_points];
indices[thinning_level] = idx = idx_count + num_lines;
const unsigned short *end_l = lines + num_lines;
const ShapePoint *p = points;
unsigned i = 0;
for (const unsigned short *l = lines; l < end_l; l++) {
assert(*l >= 2);
const ShapePoint *end_p = p + *l - 1;
// always add first point
*idx++ = i;
p++; i++;
const unsigned short *after_first_idx = idx;
// add points if they are not too close to the previous point
for (; p < end_p; p++, i++)
if (manhattan_distance(points[idx[-1]], *p) >= min_distance)
*idx++ = i;
// remove points from behind if they are too close to the end point
while (idx > after_first_idx &&
manhattan_distance(points[idx[-1]], *p) < min_distance)
idx--;
// always add last point
*idx++ = i;
p++; i++;
*idx_count++ = idx - after_first_idx + 1;
}
// TODO: free memory saved by thinning (use malloc/realloc or some class?)
return true;
} else if (type == MS_SHAPE_POLYGON) {
index_count[thinning_level] = idx_count =
new GLushort[1 + 3*(num_points-2) + 2*(num_lines-1)];
indices[thinning_level] = idx = idx_count + 1;
*idx_count = 0;
const ShapePoint *pt = points;
for (unsigned i=0; i < num_lines; i++) {
unsigned count = PolygonToTriangles(pt, lines[i], idx + *idx_count,
min_distance);
if (i > 0) {
const GLushort offset = pt - points;
const unsigned max_idx_count = *idx_count + count;
for (unsigned j=*idx_count; j < max_idx_count; j++)
idx[j] += offset;
}
*idx_count += count;
pt += lines[i];
}
*idx_count = TriangleToStrip(idx, *idx_count, num_points, num_lines);
// TODO: free memory saved by thinning (use malloc/realloc or some class?)
return true;
} else {
assert(false);
return false;
}
}