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# Rewrite 5

Browse Source 
- Move Libraries Source into pd directory and give them all their own CMakeLists.txt
- Partial rewrite core (color, autogenerated vec), lithium (now uses UNIQUE PTR for Commands), UI7
- Use MenuV2 as new standart in UI7
- Implementz ViewPort Pre alpha to UI7
- Add Line Drawing to DrawList (not Working)
- Implement a Complete new drievrs API (static Drivers)
- NO SUPPORT FOR SHARED LIBRARY BUILDS IN VERSION 5 YET
- Add Tools to Autogenerate Headers and Stuff
This commit is contained in:
tobid7
2025-06-22 21:05:09 +02:00
parent 963fa72e41
commit 57634cbf4b
184 changed files with 13967 additions and 18453 deletions
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17
pd/lithium/CMakeLists.txt Executable file
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cmake_minimum_required(VERSION 3.22)
project(pd-lithium LANGUAGES CXX VERSION 0.5.0)
set(SRC
source/drawlist.cpp
source/font.cpp
source/renderer.cpp
)
if(PD_BUILD_SHARED)
pd_add_lib(pd-lithium BUILD_SHARED TRUE SRC_FILES ${SRC})
else()
pd_add_lib(pd-lithium SRC_FILES ${SRC})
endif()
target_link_libraries(pd-lithium PUBLIC pd-core)

280
pd/lithium/source/drawlist.cpp Executable file
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/*
MIT License
Copyright (c) 2024 - 2025 tobid7
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#include <pd/lithium/drawlist.hpp>
#include <pd/lithium/renderer.hpp>
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
namespace PD {
namespace Li {
PD_LITHIUM_API void DrawList::DrawSolid() { CurrentTex = Gfx::GetSolidTex(); }
PD_LITHIUM_API Command::Ref DrawList::PreGenerateCmd() {
Command::Ref cmd = Command::New();
cmd->Layer = Layer;
cmd->Index = pDrawList.size();
cmd->Tex = CurrentTex;
pClipCmd(cmd.get());
return std::move(cmd);
}
PD_LITHIUM_API void DrawList::pClipCmd(Command *cmd) {
if (!pClipRects.IsEmpty()) {
cmd->ScissorOn = true;
cmd->ScissorRect = ivec4(pClipRects.Top());
}
}
PD_LITHIUM_API void DrawList::PathArcToN(const fvec2 &c, float radius,
float a_min, float a_max,
int segments) {
// Path.push_back(c);
PathReserve(segments + 1);
for (int i = 0; i < segments; i++) {
float a = a_min + ((float)i / (float)segments) * (a_max - a_min);
PathAdd(vec2(c.x + std::cos(a) * radius, c.y + std::sin(a) * radius));
}
}
PD_LITHIUM_API void DrawList::PathFastArcToN(const fvec2 &c, float r,
float amin, float amax, int s) {
/**
* Funcion with less division overhead
* Usefull for stuff where a lot of calculations are required
*/
float d = (amax - amin) / s;
PathReserve(s + 1);
for (int i = 0; i <= s; i++) {
float a = amin + i * d;
PathAdd(fvec2(c.x + std::cos(a) * r, c.y + std::sin(a) * r));
}
}
PD_LITHIUM_API void DrawList::PathRect(fvec2 a, fvec2 b, float rounding) {
if (rounding == 0.f) {
PathAdd(a);
PathAdd(vec2(b.x, a.y));
PathAdd(b);
PathAdd(vec2(a.x, b.y));
} else {
float r = std::min({rounding, (b.x - a.x) * 0.5f, (b.y - a.y) * 0.5f});
/** Calculate Optimal segment count automatically */
float corner = M_PI * 0.5f;
int segments = std::max(3, int(std::ceil(corner / (6.0f * M_PI / 180.0f))));
/**
* To Correctly render filled shapes with Paths API
* The Commands need to be setup clockwise
*/
/** Top Left */
PathAdd(vec2(a.x + r, a.y));
PathFastArcToN(vec2(b.x - r, a.y + r), r, -M_PI / 2.0f, 0.0f, segments);
/** Top Right */
PathAdd(vec2(b.x, b.y - r));
PathFastArcToN(vec2(b.x - r, b.y - r), r, 0.0f, M_PI / 2.0f, segments);
/** Bottom Right */
PathAdd(vec2(a.x + r, b.y));
PathFastArcToN(vec2(a.x + r, b.y - r), r, M_PI / 2.0f, M_PI, segments);
/** Bottom Left */
PathAdd(vec2(a.x, a.y + r));
PathFastArcToN(vec2(a.x + r, a.y + r), r, M_PI, 3.0f * M_PI / 2.0f,
segments);
}
}
PD_LITHIUM_API void DrawList::PathRectEx(fvec2 a, fvec2 b, float rounding,
u32 flags) {
if (rounding == 0.f) {
PathAdd(a);
PathAdd(vec2(b.x, a.y));
PathAdd(b);
PathAdd(vec2(a.x, b.y));
} else {
float r = std::min({rounding, (b.x - a.x) * 0.5f, (b.y - a.y) * 0.5f});
/** Calculate Optimal segment count automatically */
float corner = M_PI * 0.5f;
int segments = std::max(3, int(std::ceil(corner / (6.0f * M_PI / 180.0f))));
/**
* To Correctly render filled shapes with Paths API
* The Commands need to be setup clockwise
*/
/** Top Left */
if (flags & LiPathRectFlags_KeepTopLeft) {
PathAdd(a);
} else {
PathAdd(vec2(a.x + r, a.y));
PathFastArcToN(vec2(b.x - r, a.y + r), r, -M_PI / 2.0f, 0.0f, segments);
}
/** Top Right */
if (flags & LiPathRectFlags_KeepTopRight) {
PathAdd(vec2(b.x, a.y));
} else {
PathAdd(vec2(b.x, b.y - r));
PathFastArcToN(vec2(b.x - r, b.y - r), r, 0.0f, M_PI / 2.0f, segments);
}
/** Bottom Right */
if (flags & LiPathRectFlags_KeepBotRight) {
PathAdd(b);
} else {
PathAdd(vec2(a.x + r, b.y));
PathFastArcToN(vec2(a.x + r, b.y - r), r, M_PI / 2.0f, M_PI, segments);
}
/** Bottom Left */
if (flags & LiPathRectFlags_KeepBotLeft) {
PathAdd(vec2(a.x, b.y));
} else {
PathAdd(vec2(a.x, a.y + r));
PathFastArcToN(vec2(a.x + r, a.y + r), r, M_PI, 3.0f * M_PI / 2.0f,
segments);
}
}
}
PD_LITHIUM_API void DrawList::DrawRect(const fvec2 &pos, const fvec2 &size,
u32 color, int thickness) {
PathRect(pos, pos + size);
// Flags is currently hardcoded (1 = close)
PathStroke(color, thickness, 1);
}
void DrawList::DrawRectFilled(const fvec2 &pos, const fvec2 &size, u32 color) {
PathRect(pos, pos + size);
PathFill(color);
}
PD_LITHIUM_API void DrawList::DrawTriangle(const fvec2 &a, const fvec2 &b,
const fvec2 &c, u32 color,
int thickness) {
PathAdd(a);
PathAdd(b);
PathAdd(c);
PathStroke(color, thickness, 1);
}
PD_LITHIUM_API void DrawList::DrawTriangleFilled(const fvec2 &a, const fvec2 &b,
const fvec2 &c, u32 color) {
PathAdd(a);
PathAdd(b);
PathAdd(c);
PathFill(color);
}
PD_LITHIUM_API void DrawList::DrawCircle(const fvec2 &center, float rad,
u32 color, int num_segments,
int thickness) {
if (num_segments <= 0) {
// Auto Segment
} else {
float am = (M_PI * 2.0f) * ((float)num_segments) / (float)num_segments;
PathArcToN(center, rad, 0.f, am, num_segments);
}
DrawSolid(); // Only Solid Color Supported
PathStroke(color, thickness, (1 << 0));
}
PD_LITHIUM_API void DrawList::DrawCircleFilled(const fvec2 &center, float rad,
u32 color, int num_segments) {
if (num_segments <= 0) {
// Auto Segment
} else {
float am = (M_PI * 2.0f) * ((float)num_segments) / (float)num_segments;
PathArcToN(center, rad, 0.f, am, num_segments);
}
PathFill(color);
}
// TODO: Don't render OOS
PD_LITHIUM_API void DrawList::DrawPolyLine(const Vec<fvec2> &points, u32 clr,
u32 flags, int thickness) {
if (points.Size() < 2) {
return;
}
DrawSolid();
auto cmd = PreGenerateCmd();
bool close = (flags & (1 << 0));
int num_points = close ? (int)points.Size() : (int)points.Size() - 1;
if (flags & (1 << 1)) {
// TODO: Find a way to draw less garbage looking lines
} else {
// Non antialiased lines look awful when rendering with thickness != 1
for (int i = 0; i < num_points; i++) {
int j = (i + 1) == (int)points.Size() ? 0 : (i + 1);
auto line = Renderer::PrimLine(points[i], points[j], thickness);
Renderer::CmdQuad(cmd.get(), line, vec4(0.f, 1.f, 1.f, 0.f), clr);
}
}
AddCommand(std::move(cmd));
}
PD_LITHIUM_API void DrawList::DrawConvexPolyFilled(const Vec<fvec2> &points,
u32 clr) {
if (points.Size() < 3) {
return; // Need at least three points
}
auto cmd = PreGenerateCmd();
Renderer::CmdConvexPolyFilled(cmd.get(), points, clr, CurrentTex);
AddCommand(std::move(cmd));
}
PD_LITHIUM_API void DrawList::DrawText(const fvec2 &pos,
const std::string &text, u32 color) {
if (!pCurrentFont) {
return;
}
std::vector<Command::Ref> cmds;
pCurrentFont->CmdTextEx(cmds, pos, color, pFontScale, text);
for (size_t i = 0; i < cmds.size(); i++) {
cmds[i]->Index = pDrawList.size();
cmds[i]->Layer = Layer;
AddCommand(std::move(cmds[i]));
}
}
PD_LITHIUM_API void DrawList::DrawTextEx(const fvec2 &p,
const std::string &text, u32 color,
LiTextFlags flags, fvec2 box) {
if (!pCurrentFont) {
return;
}
std::vector<Command::Ref> cmds;
pCurrentFont->CmdTextEx(cmds, p, color, pFontScale, text, flags, box);
for (size_t i = 0; i < cmds.size(); i++) {
cmds[i]->Index = pDrawList.size();
cmds[i]->Layer = Layer;
AddCommand(std::move(cmds[i]));
}
}
PD_LITHIUM_API void DrawList::DrawLine(const fvec2 &a, const fvec2 &b,
u32 color, int t) {
PathAdd(a);
PathAdd(b);
PathStroke(color, t);
}
} // namespace Li
} // namespace PD

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pd/lithium/source/font.cpp Executable file
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/*
MIT License
Copyright (c) 2024 - 2025 tobid7
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#include <pd/lithium/font.hpp>
/** Due to Limitations of Shared Lib Stuff */
#ifdef PD_LITHIUM_BUILD_SHARED
#define STB_TRUETYPE_IMPLEMENTATION
#endif
#include <pd/external/stb_truetype.h>
#include <pd/lithium/renderer.hpp>
namespace PD {
namespace Li {
PD_LITHIUM_API void Font::LoadTTF(const std::string &path, int height) {
TT::Scope st("LI_LoadTTF_" + path);
PixelHeight = height; // Set internel pixel height
// Use NextPow2 to be able to use sizes between for example 16 and 32
// before it only was possible to use 8, 16, 32, 64 as size
int texszs = BitUtil::GetPow2(height * 16);
// Load stbtt
stbtt_fontinfo inf;
std::ifstream loader(path, std::ios::binary);
if (!loader.is_open()) return;
loader.seekg(0, std::ios::end);
size_t len = loader.tellg();
loader.seekg(0, std::ios::beg);
unsigned char *buffer = new unsigned char[len];
loader.read(reinterpret_cast<char *>(buffer), len);
loader.close();
stbtt_InitFont(&inf, buffer, 0);
// clang-format off
// Disable clang here cause dont want a garbage looking line
std::vector<PD::u8> font_tex(texszs * texszs * 4); // Create font Texture
// clang-format on
float scale = stbtt_ScaleForPixelHeight(&inf, PixelHeight);
int ascent, descent, lineGap;
stbtt_GetFontVMetrics(&inf, &ascent, &descent, &lineGap);
int baseline = static_cast<int>(ascent * scale);
std::map<u32, int> buf_cache; // Cache to not render same codepoint tex twice
/// Load Codepoints
auto tex = Texture::New();
fvec2 off;
for (u32 ii = 0x0000; ii < 0xFFFF; ii++) {
int i = stbtt_FindGlyphIndex(&inf, ii);
if (i == 0) {
continue;
}
if (stbtt_IsGlyphEmpty(&inf, i)) {
continue;
}
Codepoint c;
int w = 0, h = 0, xo = 0, yo = 0;
unsigned char *bitmap =
stbtt_GetCodepointBitmap(&inf, scale, scale, i, &w, &h, &xo, &yo);
int x0, y0, x1, y1;
stbtt_GetCodepointBitmapBox(&inf, i, scale, scale, &x0, &y0, &x1, &y1);
// Check if Codepoint exists as hash and if it is use its already written
// data
u32 hashed_map = IO::HashMemory(std::vector<u8>(bitmap, bitmap + (w * h)));
if (buf_cache.find(hashed_map) != buf_cache.end()) {
c = GetCodepoint(buf_cache[hashed_map]);
c.pCodepoint = i;
CodeMap[i] = c;
free(bitmap);
continue;
} else {
buf_cache[hashed_map] = i;
}
if (off.x + w > texszs) {
off.y += PixelHeight;
off.x = 0;
}
// Set UV Data
fvec4 uvs;
uvs.x = static_cast<float>(off.x) / texszs;
uvs.y = static_cast<float>(off.y) / texszs;
uvs.z = static_cast<float>((off.x + w) / texszs);
uvs.w = static_cast<float>((off.y + h) / texszs);
if (Gfx::Flags() & LiBackendFlags_FlipUV_Y) {
uvs.y = 1.f - uvs.y;
uvs.w = 1.f - uvs.w;
}
c.SimpleUV = uvs;
c.Tex = tex;
c.Size = fvec2(w, h);
c.Offset = baseline + yo;
// Render glyph
for (int y = 0; y < h; ++y) {
for (int x = 0; x < w; ++x) {
int map_pos = (((off.y + y) * texszs + (off.x + x))) * 4;
font_tex[map_pos + 0] = 255;
font_tex[map_pos + 1] = 255;
font_tex[map_pos + 2] = 255;
font_tex[map_pos + 3] = bitmap[x + y * w];
}
}
free(bitmap);
CodeMap[i] = c;
// Small Patch to avoid some possible artifacts
off.x += w + 1;
if (off.x + w > texszs) {
off.y += PixelHeight;
if (off.y + PixelHeight > texszs) {
break;
}
off.x = 0;
}
}
// Load the Texture and append to list
{
auto t = Gfx::LoadTex(font_tex, texszs, texszs, Texture::RGBA32,
Texture::LINEAR);
tex->CopyFrom(t);
}
Textures.push_back(tex);
}
PD_LITHIUM_API Font::Codepoint &Font::GetCodepoint(u32 cp) {
// Check if codepoijt exist or return a static invalid one
auto res = CodeMap.find(cp);
if (res == CodeMap.end()) {
static Codepoint invalid;
invalid.pInvalid = true;
return invalid;
}
return res->second;
}
PD_LITHIUM_API fvec2 Font::GetTextBounds(const std::string &text, float scale) {
// Use wstring for exemple for german äöü
auto wtext = Strings::MakeWstring(text);
// Create a temp position and offset as [0, 0]
fvec2 res;
float x = 0;
// Curent Font Scale
float cfs = (DefaultPixelHeight * scale) / (float)PixelHeight;
float lh = (float)PixelHeight * cfs;
size_t index = 0;
for (auto &it : wtext) {
if (it == '\0') {
break;
}
index++;
auto cp = GetCodepoint(it);
if (cp.pInvalid && it != '\n' && it != '\t' && it != ' ') {
continue;
}
switch (it) {
case '\n':
res.y += lh;
res.x = std::max(res.x, x);
x = 0.f;
break;
case '\t':
x += 16 * cfs;
break;
case ' ':
x += 2 * cfs;
// Fall trough here to get the same result as in
// TextCommand if/else Section
default:
x += cp.Size.x * cfs;
if (index != wtext.size()) {
x += 2 * cfs;
}
break;
}
}
res.x = std::max(res.x, x);
res.y += lh;
return res;
}
PD_LITHIUM_API void Font::CmdTextEx(std::vector<Command::Ref> &cmds,
const fvec2 &pos, u32 color, float scale,
const std::string &text, LiTextFlags flags,
const fvec2 &box) {
fvec2 off;
float cfs = (DefaultPixelHeight * scale) / (float)PixelHeight;
float lh = (float)PixelHeight * cfs;
fvec2 td;
fvec2 rpos = pos;
fvec2 rbox = box;
if (flags & (LiTextFlags_AlignMid | LiTextFlags_AlignRight)) {
td = GetTextBounds(text, scale);
}
if (flags & LiTextFlags_AlignMid) {
rpos = rbox * 0.5 - td * 0.5 + pos;
}
if (flags & LiTextFlags_AlignRight) {
rpos.x = rpos.x - td.x;
}
std::vector<std::string> lines;
std::istringstream iss(text);
std::string tmp;
while (std::getline(iss, tmp)) {
lines.push_back(tmp);
}
for (auto &it : lines) {
/*if (flags & LITextFlags_Short) {
fvec2 tmp_dim;
it = ShortText(it, box.x() - pos.x(), tmp_dim);
}*/
auto wline = Strings::MakeWstring(it);
auto cmd = Command::New();
auto Tex = GetCodepoint(wline[0]).Tex;
cmd->Tex = Tex;
for (auto &jt : wline) {
auto cp = GetCodepoint(jt);
if ((cp.pInvalid && jt != '\n' && jt != '\t') && jt != '\r') {
continue;
}
if (Tex != cp.Tex) {
cmds.push_back(std::move(cmd));
cmd = Command::New();
Tex = cp.Tex;
cmd->Tex = Tex;
}
if (jt == '\t') {
off.x += 16 * cfs;
} else {
if (jt != ' ') {
if (flags & LiTextFlags_Shaddow) {
// Draw
Rect rec = Renderer::PrimRect(
rpos + vec2(off.x + 1, off.x + (cp.Offset * cfs)) + 1,
cp.Size * cfs, 0.f);
Renderer::CmdQuad(cmd.get(), rec, cp.SimpleUV, 0xff111111);
}
// Draw
Rect rec = Renderer::PrimRect(
rpos + off + fvec2(0, (cp.Offset * cfs)), cp.Size * cfs, 0.f);
Renderer::CmdQuad(cmd.get(), rec, cp.SimpleUV, color);
} else {
off.x += 2 * cfs;
}
off.x += cp.Size.x * cfs + 2 * cfs;
}
}
cmds.push_back(std::move(cmd));
off.y += lh;
off.x = 0;
}
}
} // namespace Li
} // namespace PD

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pd/lithium/source/renderer.cpp Executable file
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/*
MIT License
Copyright (c) 2024 - 2025 tobid7
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#include <pd/lithium/renderer.hpp>
namespace PD {
namespace Li {
PD_LITHIUM_API bool Renderer::InBox(const fvec2& pos, const fvec2& szs,
const fvec4& rect) {
return (pos.x + szs.x >= rect.x && pos.y + szs.y >= rect.y &&
pos.x <= rect.z && pos.y <= rect.w);
}
PD_LITHIUM_API bool Renderer::InBox(const fvec2& pos, const fvec4& rect) {
return (pos.x > rect.x && pos.x < rect.x + rect.z && pos.y > rect.y &&
pos.y < rect.y + rect.w);
}
PD_LITHIUM_API bool Renderer::InBox(const fvec2& alpha, const fvec2& bravo,
const fvec2& charlie, const fvec4& rect) {
return ((alpha.x < rect.z && bravo.x < rect.z && charlie.x < rect.z) ||
(alpha.y < rect.w && bravo.y < rect.w && charlie.y < rect.w) ||
(alpha.x > 0 && bravo.x > 0 && charlie.x > 0) ||
(alpha.y > 0 && bravo.y > 0 && charlie.y > 0));
}
PD_LITHIUM_API void Renderer::RotateCorner(fvec2& pos, float sinus,
float cosinus) {
float x = pos.x * cosinus - pos.y * sinus;
float y = pos.y * cosinus - pos.x * sinus;
pos = fvec2(x, y);
}
PD_LITHIUM_API Rect Renderer::PrimRect(const fvec2& pos, const fvec2& size,
float angle) {
fvec2 c = size * 0.5f; // Center
fvec2 corner[4] = {
fvec2(-c.x, -c.y),
fvec2(-c.x + size.x, -c.y),
fvec2(-c.x, -c.y + size.y),
fvec2(-c.x + size.x, -c.y + size.y),
};
// Only rotate if required
if (angle != 0.f) {
float s = std::sin(angle);
float co = std::cos(angle);
for (int i = 0; i < 4; i++) {
RotateCorner(corner[i], s, co);
}
}
// Return Result
return Rect(corner[0] + pos + c, corner[1] + pos + c, corner[2] + pos + c,
corner[3] + pos + c);
}
PD_LITHIUM_API Rect Renderer::PrimLine(const fvec2& a, const fvec2& b,
int thickness) {
// Using the vec maths api makes the code as short as it is
vec2 dir = a - b;
float len = dir.Len();
vec2 unit_dir = dir / len;
vec2 perpendicular(-unit_dir.y, unit_dir.x);
vec2 off = perpendicular * ((float)thickness * 0.5f);
return Rect(a + off, b + off, a - off, b - off);
}
PD_LITHIUM_API void Renderer::CmdQuad(Command* cmd, const Rect& quad,
const Rect& uv, u32 color) {
cmd->AddIdx(0).AddIdx(1).AddIdx(2);
cmd->AddIdx(0).AddIdx(2).AddIdx(3);
cmd->AddVtx(Vertex(quad.BotRight(), uv.BotRight(), color));
cmd->AddVtx(Vertex(quad.TopRight(), uv.TopRight(), color));
cmd->AddVtx(Vertex(quad.TopLeft(), uv.TopLeft(), color));
cmd->AddVtx(Vertex(quad.BotLeft(), uv.BotLeft(), color));
}
PD_LITHIUM_API void Renderer::CmdTriangle(Command* cmd, const fvec2 a,
const fvec2 b, const fvec2 c,
u32 clr) {
cmd->AddIdx(2).AddIdx(1).AddIdx(0);
cmd->AddVtx(Vertex(a, vec2(0.f, 1.f), clr));
cmd->AddVtx(Vertex(b, vec2(1.f, 1.f), clr));
cmd->AddVtx(Vertex(c, vec2(1.f, 0.f), clr));
}
// TODO: Don't render OOS (Probably make it with a define as it
// would probably be faster to render out of screen than checking if
// it could be skipped)
PD_LITHIUM_API void Renderer::CmdConvexPolyFilled(Command* cmd,
const Vec<fvec2>& points,
u32 clr, Texture::Ref tex) {
if (points.Size() < 3 || tex == nullptr) {
return; // Need at least three points
}
// Support for Custom Textures (UV calculation)
float minX = points[0].x, minY = points[0].y;
float maxX = minX, maxY = minY;
// Check for the max and min Positions
for (auto it = points.Begin(); it != points.End(); it++) {
if ((*it).x < minX) minX = (*it).x;
if ((*it).y < minY) minY = (*it).y;
if ((*it).x > maxX) maxX = (*it).x;
if ((*it).y > maxY) maxY = (*it).y;
}
// Get Short defines for UV
// (Bottom Right is not required)
auto uv_tl = tex->UV.TopLeft();
auto uv_tr = tex->UV.TopRight();
auto uv_bl = tex->UV.BotLeft();
// Render
for (int i = 2; i < (int)points.Size(); i++) {
cmd->AddIdx(0).AddIdx(i).AddIdx(i - 1);
}
for (int i = 0; i < (int)points.Size(); i++) {
// Calculate U and V coords
float u =
uv_tl.x + ((points[i].x - minX) / (maxX - minX)) * (uv_tr.x - uv_tl.x);
float v =
uv_tl.y + ((points[i].y - minY) / (maxY - minY)) * (uv_bl.y - uv_tl.y);
cmd->AddVtx(Vertex(points[i], fvec2(u, v), clr));
}
}
} // namespace Li
} // namespace PD