void Font_Draw(FontObj* font, const Text::DrawParams* params)
{
// Convert to UTF32
unsigned int buffer[1024];
unsigned int bufferSize = ARRAYSIZE(buffer);
if (!UTF8ToUTF32((const unsigned char*) params->text.c_str(), params->text.length(), buffer, bufferSize))
return;
// Make sure all glyphs are present
Font_CacheGlyphs(font, buffer, bufferSize);
// Generate positions and uvs for the text
if (!font->texture)
return;
const float scale = params->scale;
std::vector<float> xy;
std::vector<float> uv;
float x = params->position.x;
float y = params->position.y;
for (unsigned int i = 0; i < bufferSize; i++)
{
if (buffer[i] == '\r')
continue;
if (buffer[i] == '\n')
{
y += (float) font->size * scale;
x = params->position.x;
continue;
}
Glyph* glyph = map_find(font->glyphs, buffer[i]);
if (!glyph)
continue;
uv.push_back(glyph->uv.left); uv.push_back(glyph->uv.top);
uv.push_back(glyph->uv.left + glyph->uv.width); uv.push_back(glyph->uv.top);
uv.push_back(glyph->uv.left + glyph->uv.width); uv.push_back(glyph->uv.top + glyph->uv.height);
uv.push_back(glyph->uv.left); uv.push_back(glyph->uv.top + glyph->uv.height);
uv.push_back(*(uv.end() - 8)); uv.push_back(*(uv.end() - 8));
uv.push_back(*(uv.end() - 6)); uv.push_back(*(uv.end() - 6));
xy.push_back(x + glyph->pos.left * scale); xy.push_back(y + glyph->pos.top * scale);
xy.push_back(x + (glyph->pos.left + glyph->pos.width) * scale); xy.push_back(y + glyph->pos.top * scale);
xy.push_back(x + (glyph->pos.left + glyph->pos.width) * scale); xy.push_back(y + (glyph->pos.top + glyph->pos.height) * scale);
xy.push_back(x + glyph->pos.left * scale); xy.push_back(y + (glyph->pos.top + glyph->pos.height) * scale);
xy.push_back(*(xy.end() - 8)); xy.push_back(*(xy.end() - 8));
xy.push_back(*(xy.end() - 6)); xy.push_back(*(xy.end() - 6));
x += glyph->advancePos * scale;
}
// Determine mins and maxes of the text
float minX = (float) INT_MAX, maxX = (float) INT_MIN, minY = (float) INT_MAX, maxY = (float) INT_MIN;
for (unsigned int i = 0; i < xy.size(); i += 2)
{
minX = min(minX, xy[i]);
maxX = max(maxX, xy[i]);
minY = min(minY, xy[i + 1]);
maxY = max(maxY, xy[i + 1]);
}
// Determine the center of the text
float centerX = 0.0f, centerY = 0.0f;
if (params->width == 0.0f || params->height == 0.0f)
{
centerX = (minX + maxX) * 0.5f;
centerY = (minY + maxY) * 0.5f;
}
else
{
centerX = params->position.x + params->width * 0.5f;
centerY = params->position.y + params->height * 0.5f;
}
// Align the text
switch (params->horizontalAlignment)
{
case Text::HorizontalAlignment_Center:
{
const float offset = params->position.x + params->width * 0.5f - (minX + maxX) * 0.5f;
for (unsigned int i = 0; i < xy.size(); i += 2)
xy[i] += offset;
break;
}
case Text::HorizontalAlignment_Right:
{
const float offset = params->position.x + params->width - maxX;
for (unsigned int i = 0; i < xy.size(); i += 2)
xy[i] += offset;
break;
}
default:
//case Text::HorizontalAlignment_Left
:
break;
}
switch (params->verticalAlignment)
{
case Text::VerticalAlignment_Center:
{
const float offset = params->position.y + params->height * 0.5f - (minY + maxY) * 0.5f;
for (unsigned int i = 1; i < xy.size(); i += 2)
xy[i] += offset;
break;
}
case Text::VerticalAlignment_Bottom:
{
const float offset = params->position.y + params->height - maxY;
for (unsigned int i = 1; i < xy.size(); i += 2)
xy[i] += offset;
break;
}
default:
//case Text::VerticalAlignment_Top:
break;
}
// Set up draw params
Shape::DrawParams texParams;
texParams.SetGeometryType(Shape::Geometry::Type_Triangles);
texParams.SetNumVerts(xy.size() / 2);
texParams.SetTexCoord(&uv[0]);
// Draw shadow
if (params->drawShadow)
{
// Offset verts for the shadow rendering
std::vector<float> xyShadow = xy;
for (unsigned int i = 0; i < xyShadow.size(); i += 2)
{
xyShadow[i] += params->shadowOffset.x;
xyShadow[i + 1] += params->shadowOffset.y;
}
// Rotate the shadow text
if (params->rotation != 0)
{
const float rotationSin = sinf(params->rotation);
const float rotationCos = cosf(params->rotation);
for (unsigned int i = 0; i < xyShadow.size(); i += 2)
Vertex_Rotate(xyShadow[i], xyShadow[i + 1], centerX, centerY, rotationSin, rotationCos);
}
// Draw the shadow
texParams.color = params->shadowColor;
texParams.SetPosition(&xyShadow[0]);
Texture_Draw(font->texture, &texParams);
}
// Rotate the text
if (params->rotation != 0)
{
const float rotationSin = sinf(params->rotation);
const float rotationCos = cosf(params->rotation);
for (unsigned int i = 0; i < xy.size(); i += 2)
Vertex_Rotate(xy[i], xy[i + 1], centerX, centerY, rotationSin, rotationCos);
}
// Draw
texParams.color = params->color;
texParams.SetPosition(&xy[0]);
Texture_Draw(font->texture, &texParams);
}
void Texture::Draw(float left, float top, float rotation, float scale, const Color& color) { if (obj) Texture_Draw(obj, left, top, rotation, scale, color); }
void Texture::Draw(const Vec2& position, float rotation, float scale, const Color& color) { if (obj) Texture_Draw(obj, position, rotation, scale, color); }
void Texture::Draw(const Shape::DrawParams* params, const Sampler& sampler) { if (obj) Texture_Draw(obj, params, sampler); }
void Sprite_Draw(SpriteObj* sprite, const Sprite::DrawParams* params)
{
if (!SpriteResource_CheckCreated(sprite->resource))
return;
// Get animation instance
SpriteObj::AnimationInstance* animationInstance = NULL;
for (std::vector<SpriteObj::AnimationInstance>::iterator it = sprite->animationInstances.begin(); it != sprite->animationInstances.end(); ++it)
if (it->mode != Sprite::AnimationMode_OnceWhenDone && it->mode != Sprite::AnimationMode_LoopWhenDone && (!animationInstance || it->weight > animationInstance->weight))
animationInstance = &(*it);
Assert(animationInstance);
// Determine textures to draw
Texture* texture0 = NULL;
Texture* texture1 = NULL;
Shape::DrawParams texParams;
float lerp = 0.0f;
float uv[8] =
{
0, 0,
1, 0,
1, 1,
0, 1
};
if (params->texCoordRect)
{
uv[0] = params->texCoordRect->left; uv[1] = params->texCoordRect->top;
uv[2] = params->texCoordRect->Right(); uv[3] = params->texCoordRect->top;
uv[4] = params->texCoordRect->Right(); uv[5] = params->texCoordRect->Bottom();
uv[6] = params->texCoordRect->left; uv[7] = params->texCoordRect->Bottom();
}
if (params->flipX)
for (int i = 0; i < 8; i += 2)
uv[i] = 1.0f - uv[i];
if (params->flipY)
for (int i = 1; i < 8; i += 2)
uv[i] = 1.0f - uv[i];
SpriteResource::Animation* animation = animationInstance->animation;
if (animation->frames.size() == 1)
{
texture0 = &animation->frames[0].texture;
texParams.color = params->color;
texParams.SetNumVerts(4);
texParams.SetTexCoord(uv);
}
else
{
const float numFramesF = (float) animation->frames.size();
const float frameIndexF = numFramesF * (animationInstance->time / animation->totalTime);
const float firstFrameIndexF = floorf(frameIndexF);
const int firstFrameIndex = clamp((int) firstFrameIndexF, (int) 0, (int) animation->frames.size() - 1);
const int nextFrameIndex = (firstFrameIndex + 1) % animation->frames.size();
SpriteResource::Frame& firstFrame = animation->frames[firstFrameIndex];
SpriteResource::Frame& nextFrame = animation->frames[nextFrameIndex];
texture0 = &firstFrame.texture;
texture1 = &nextFrame.texture;
texParams.SetNumVerts(4);
texParams.SetTexCoord(uv, 0);
texParams.SetTexCoord(uv, 1);
lerp = frameIndexF - firstFrameIndexF;
}
float xy[8] =
{
params->position.x, params->position.y,
params->position.x + sprite->resource->width * params->scale, params->position.y,
params->position.x + sprite->resource->width * params->scale, params->position.y + sprite->resource->height * params->scale,
params->position.x, params->position.y + sprite->resource->height * params->scale
};
if (params->rect)
{
xy[0] = params->rect->left; xy[1] = params->rect->top;
xy[2] = params->rect->Right(); xy[3] = params->rect->top;
xy[4] = params->rect->Right(); xy[5] = params->rect->Bottom();
xy[6] = params->rect->left; xy[7] = params->rect->Bottom();
}
if (params->rotation != 0)
{
const float centerX = (xy[0] + xy[2]) * 0.5f;
const float centerY = (xy[1] + xy[5]) * 0.5f;
const float rotationSin = sinf(params->rotation);
const float rotationCos = cosf(params->rotation);
float* xyPtr = xy;
for (int i = 0; i < 4; i++, xyPtr += 2)
Vertex_Rotate(xyPtr[0], xyPtr[1], centerX, centerY, rotationSin, rotationCos);
}
texParams.SetPosition(xy);
// Draw
#if 0
if (texture1)
Texture_DrawBlended(texture0, texture1, &texParams, lerp);
else
Texture_Draw(texture0, &texParams);
#else
Material* material = &sprite->resource->material;
if (!material->IsValid())
material = &App::GetDefaultMaterial();
material->SetFloatParameter("Color", (const float*) &texParams.color, 4);
if (texture1)
{
material->SetTechnique("tex_lerp_col");
material->SetTextureParameter("ColorMap0", *texture0);
material->SetTextureParameter("ColorMap1", *texture1);
material->SetFloatParameter("Scale", &lerp);
material->Draw(&texParams);
}
else
{
material->SetTechnique("tex_col");
material->SetTextureParameter("ColorMap", *texture0);
material->Draw(&texParams);
}
#endif
}
