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Add perspective projection support

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Abdelrahman Said 2024-08-11 17:57:56 +01:00
parent fee04607a7
commit 34d0d17b76
2 changed files with 14 additions and 4 deletions
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8
src/obj.c
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@ -204,7 +204,8 @@ bool init_render(Arena *arena, Render *render, u64 width, u64 height) {
} }
void render_model(const Model *model, Render *render, Colour colour, void render_model(const Model *model, Render *render, Colour colour,
RenderType type, ColourType colour_type) { RenderType type, ColourType colour_type,
ProjectionType projection) {
Triangle triangle; Triangle triangle;
for (u64 i = 0; i < model->triangles->count; ++i) { for (u64 i = 0; i < model->triangles->count; ++i) {
@ -215,12 +216,13 @@ void render_model(const Model *model, Render *render, Colour colour,
.b = rand() % UINT8_MAX, .b = rand() % UINT8_MAX,
.a = 255}; .a = 255};
} }
render_triangle(&triangle, model, render, colour, type); render_triangle(&triangle, model, render, colour, type, projection);
} }
} }
internal void render_triangle(const Triangle *triangle, const Model *model, internal void render_triangle(const Triangle *triangle, const Model *model,
Render *render, Colour colour, RenderType type) { Render *render, Colour colour, RenderType type,
ProjectionType projection) {
Image *img = &(render->img); Image *img = &(render->img);
Vertex vertices[TRIANGLE_VERTICES] = { Vertex vertices[TRIANGLE_VERTICES] = {
list_get(model->vertices, triangle->p0), list_get(model->vertices, triangle->p0),

10
src/obj.h
View File

@ -47,6 +47,13 @@ typedef enum {
COUNT_COLOUR_TYPE, COUNT_COLOUR_TYPE,
} ColourType; } ColourType;
typedef enum {
PROJECTION_TYPE_ORTHOGRAPHIC,
PROJECTION_TYPE_PERSPECTIVE,
COUNT_PROJECTION_TYPE,
} ProjectionType;
MAKE_LIST_TYPE(Vertex); MAKE_LIST_TYPE(Vertex);
MAKE_LIST_TYPE(TexCoord); MAKE_LIST_TYPE(TexCoord);
MAKE_LIST_TYPE(Triangle); MAKE_LIST_TYPE(Triangle);
@ -68,6 +75,7 @@ struct render {
Model load_obj_file(Arena *arena, const char *filename, const char *texture); Model load_obj_file(Arena *arena, const char *filename, const char *texture);
bool init_render(Arena *arena, Render *render, u64 width, u64 height); bool init_render(Arena *arena, Render *render, u64 width, u64 height);
void render_model(const Model *model, Render *render, Colour colour, void render_model(const Model *model, Render *render, Colour colour,
RenderType type, ColourType colour_type); RenderType type, ColourType colour_type,
ProjectionType projection);
#endif // OBJ_H #endif // OBJ_H