111 lines
4.1 KiB
C
111 lines
4.1 KiB
C
#ifndef TWN_DRAW_H
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#define TWN_DRAW_H
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#include "twn_types.h"
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#include "twn_option.h"
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#include "twn_camera.h"
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#include "twn_engine_api.h"
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#include <stdbool.h>
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/* pushes a sprite onto the sprite render queue */
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TWN_API void draw_sprite(char const *path,
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Rect rect,
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Rect const *texture_region, /* optional, default: NULL */
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Color color, /* optional, default: all 255 */
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float rotation, /* optional, default: 0 */
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bool flip_x, /* optional, default: false */
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bool flip_y, /* optional, default: false */
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bool stretch); /* optional, default: false */
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/* pushes a filled rectangle onto the rectangle render queue */
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TWN_API void draw_rectangle(Rect rect, Color color);
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/* pushes a filled circle onto the circle render queue */
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/* note that its edges may look jagged with a radius larger than 2048 */
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TWN_API void draw_circle(Vec2 position, float radius, Color color);
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/* TODO: have font optional, with something minimal coming embedded */
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TWN_API void draw_text(char const *string,
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Vec2 position,
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int height_px, /* optional, default: 22 */
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Color color, /* optional, default: all 0 */
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char const *font);
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TWN_API int draw_text_width(char const *string,
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int height_px, /* TODO: make optional */
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char const *font);
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TWN_API void draw_9slice(char const *texture_path,
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int texture_w,
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int texture_h,
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int border_thickness,
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Rect rect,
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Color color); /* TODO: make optional */
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/* pushes a textured 3d triangle onto the render queue */
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/* vertices are in absolute coordinates, relative to world origin */
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/* texture coordinates are in pixels */
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TWN_API void draw_triangle(char const *path,
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Vec3 v0,
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Vec3 v1,
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Vec3 v2,
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Vec2 uv0,
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Vec2 uv1,
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Vec2 uv2);
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// TODO: decide whether it's needed to begin with?
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// intended usage for it is baked lighting, i would think.
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/* pushes a colored textured 3d triangle onto the render queue */
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// void unfurl_colored_triangle(const char *path,
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// Vec3 v0,
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// Vec3 v1,
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// Vec3 v2,
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// Vec2sh uv0,
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// Vec2sh uv1,
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// Vec2sh uv2,
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// Color c0,
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// Color c1,
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// Color c2);
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// TODO:
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// http://www.lighthouse3d.com/opengl/billboarding/index.php?billCheat2
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// void unfurl_billboard(const char *path,
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// Vec2 position,
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// Vec2 scaling,
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// Rect uvs);
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/* pushes a camera state to be used for all future unfurl_* commands */
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TWN_API void draw_camera(const Camera *camera);
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/* expects '*' masks that will be expanded to 6 names: 'up', 'down', 'east', 'west', 'north' and 'south' */
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TWN_API void draw_skybox(const char *paths);
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TWN_API void draw_fog(float start, float end, float density, Color color);
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#ifndef TWN_NOT_C
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typedef struct DrawSpriteArgs {
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char const *path;
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Rect rect;
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m_option_list(
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Rect, texture_region,
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Color, color,
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float, rotation,
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bool, flip_x,
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bool, flip_y,
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bool, stretch )
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} DrawSpriteArgs;
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TWN_API void draw_sprite_args(DrawSpriteArgs args);
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#define m_sprite(...) (draw_sprite_args((DrawSpriteArgs){__VA_ARGS__}))
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/* TODO: define more */
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#endif /* TWN_NOT_C */
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#endif
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