More graphics transform functions;

lovr.graphics.translate
lovr.graphics.rotate
lovr.graphics.scale

src/graphics/graphics.c

@@ -82,6 +82,18 @@ void lovrGraphicsOrigin() {
   mat4_setIdentity(vec_last(transforms));
 }
 
+void lovrGraphicsTranslate(float x, float y, float z) {
+  mat4_translate(vec_last(&graphicsState.transforms), x, y, z);
+}
+
+void lovrGraphicsRotate(float w, float x, float y, float z) {
+  mat4_rotate(vec_last(&graphicsState.transforms), w, x, y, z);
+}
+
+void lovrGraphicsScale(float x, float y, float z) {
+  mat4_scale(vec_last(&graphicsState.transforms), x, y, z);
+}
+
 Buffer* lovrGraphicsNewBuffer(int size, BufferDrawMode drawMode, BufferUsage usage) {
   Buffer* buffer = malloc(sizeof(Buffer));
 

src/graphics/graphics.h

@@ -18,6 +18,9 @@ void lovrGraphicsSetShader(Shader* shader);
 int lovrGraphicsPush();
 int lovrGraphicsPop();
 void lovrGraphicsOrigin();
+void lovrGraphicsTranslate(float x, float y, float z);
+void lovrGraphicsRotate(float w, float x, float y, float z);
+void lovrGraphicsScale(float x, float y, float z);
 Buffer* lovrGraphicsNewBuffer(int size, BufferDrawMode drawMode, BufferUsage usage);
 Model* lovrGraphicsNewModel(const char* path);
 Shader* lovrGraphicsNewShader(const char* vertexSource, const char* fragmentSource);

src/lovr/graphics.c

@@ -14,6 +14,9 @@ const luaL_Reg lovrGraphics[] = {
   { "push", l_lovrGraphicsPush },
   { "pop", l_lovrGraphicsPop },
   { "origin", l_lovrGraphicsOrigin },
+  { "translate", l_lovrGraphicsTranslate },
+  { "rotate", l_lovrGraphicsRotate },
+  { "scale", l_lovrGraphicsScale },
   { "newModel", l_lovrGraphicsNewModel },
   { "newBuffer", l_lovrGraphicsNewBuffer },
   { "newShader", l_lovrGraphicsNewShader },
@@ -108,6 +111,31 @@ int l_lovrGraphicsOrigin(lua_State* L) {
   return 0;
 }
 
+int l_lovrGraphicsTranslate(lua_State* L) {
+  float x = luaL_checknumber(L, 1);
+  float y = luaL_checknumber(L, 2);
+  float z = luaL_checknumber(L, 3);
+  lovrGraphicsTranslate(x, y, z);
+  return 0;
+}
+
+int l_lovrGraphicsRotate(lua_State* L) {
+  float w = luaL_checknumber(L, 1);
+  float x = luaL_checknumber(L, 2);
+  float y = luaL_checknumber(L, 3);
+  float z = luaL_checknumber(L, 4);
+  lovrGraphicsRotate(w, x, y, z);
+  return 0;
+}
+
+int l_lovrGraphicsScale(lua_State* L) {
+  float x = luaL_checknumber(L, 1);
+  float y = luaL_checknumber(L, 2);
+  float z = luaL_checknumber(L, 3);
+  lovrGraphicsScale(x, y, z);
+  return 0;
+}
+
 int l_lovrGraphicsNewBuffer(lua_State* L) {
   const char* userDrawMode = luaL_optstring(L, 2, "fan");
   BufferDrawMode* drawMode = (BufferDrawMode*) map_get(&BufferDrawModes, userDrawMode);

src/lovr/graphics.h

@@ -17,6 +17,9 @@ int l_lovrGraphicsSetShader(lua_State* L);
 int l_lovrGraphicsPush(lua_State* L);
 int l_lovrGraphicsPop(lua_State* L);
 int l_lovrGraphicsOrigin(lua_State* L);
+int l_lovrGraphicsTranslate(lua_State* L);
+int l_lovrGraphicsRotate(lua_State* L);
+int l_lovrGraphicsScale(lua_State* L);
 int l_lovrGraphicsNewBuffer(lua_State* L);
 int l_lovrGraphicsNewModel(lua_State* L);
 int l_lovrGraphicsNewShader(lua_State* L);