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#include "gizmo.h"
#include "../core/device.h"
#include "../math/math.h"
#include "../shaders/common/core.h"
struct {
bool show_grid, g_pressing;
bool show_axis, a_pressing;
} gizmo_state;
void gizmo_init() {
gizmo_state.show_grid = FALSE;
gizmo_state.g_pressing = FALSE;
gizmo_state.show_axis = FALSE;
gizmo_state.a_pressing = FALSE;
}
void gizmo_onevent(wog_Event* e, float dt) {
if (e == NULL) return;
if (e->type == WOG_EKEYDOWN) {
if (e->key == VK_A && !gizmo_state.a_pressing) {
gizmo_state.show_axis = !gizmo_state.show_axis;
gizmo_state.a_pressing = TRUE;
}
else if (e->key == VK_G && !gizmo_state.g_pressing) {
gizmo_state.show_grid = !gizmo_state.show_grid;
gizmo_state.g_pressing = TRUE;
}
}
else if (e->type == WOG_EKEYUP) {
if(e->key == VK_G)
gizmo_state.g_pressing = FALSE;
if(e->key == VK_A)
gizmo_state.a_pressing = FALSE;
}
}
void gizmo_onupdate(float dt) {
}
void gizmo_ondraw() {
if(gizmo_state.show_grid)
gizmo_grid();
if (gizmo_state.show_axis)
gizmo_axis();
}
// varying
#define _color reg_v4_00
static void vert(UniformCollection* uniforms, VertexShaderIn* in, Vec4* clipcoord) {
static Vec4 p; p.xyz = in->vertex->position; p.w = 1;
object2clip(&p, clipcoord);
color_tocolor32(in->vertex->color, _color);
}
static bool frag(UniformCollection* uniforms, FragmentShaderIn* in, Color32* color) {
*color = *_color;
return 1;
}
static Program line_shader = {
vert, frag,
VARYING_V4_00
};
void gizmo_grid() {
const int field = 1000;
int vCount = 80 + 4;
Vert verts[84] = {0};//4*field/100*2
int grid[84] = {0};
int vertCount;
int i = 0;
Color color = 0xffaaaaaa;
for (int y = -field; y <= field; y += 100)
{
if (y == 0 && gizmo_state.show_axis) {
vCount -= 2;
continue;
}
verts[i].index = i;
verts[i].position = internal_vec3_make(-field, 0, y);
verts[i].normal = vec3zero;
verts[i].tangent = vec4zero;
verts[i].texcoord = vec2zero;
verts[i].color = color;
grid[i] = i++;
verts[i].index = i;
verts[i].position = internal_vec3_make(field, 0, y);
verts[i].normal = vec3zero;
verts[i].tangent = vec4zero;
verts[i].texcoord = vec2zero;
verts[i].color = color;
grid[i] = i++;
}
for (int x = -field; x <= field; x += 100)
{
if (x == 0 && gizmo_state.show_axis) {
vCount -= 2;
continue;
}
verts[i].index = i;
verts[i].position = internal_vec3_make(x, 0, -field);
verts[i].normal = vec3zero;
verts[i].tangent = vec4zero;
verts[i].texcoord = vec2zero;
verts[i].color = color;
grid[i] = i++;
verts[i].index = i;
verts[i].position = internal_vec3_make(x, 0, field);
verts[i].normal = vec3zero;
verts[i].tangent = vec4zero;
verts[i].texcoord = vec2zero;
verts[i].color = color;
grid[i] = i++;
}
ssr_bindvertices(&verts, vCount, &grid, vCount/2);
ssr_matrixmode(MATRIX_MODEL);
ssr_loadidentity();
ssr_useprogram(&line_shader);
ssr_draw(PRIMITIVE_LINE);
ssr_unuseprogram();
ssr_enable(ENABLE_WRITEDEPTH);
}
void gizmo_axis() {
Vert verts[] = {
{0, {-10000, 0, 0}, vec3zero, vec4zero, vec2zero, 0xffff0000},
{1, {10000, 0, 0}, vec3zero, vec4zero, vec2zero, 0xffff0000},
{2, {0, -10000, 0}, vec3zero, vec4zero, vec2zero, 0xff00ff00},
{3, {0, 10000, 0}, vec3zero, vec4zero, vec2zero, 0xff00ff00},
{4, {0, 0, -10000}, vec3zero, vec4zero, vec2zero, 0xff0000ff},
{5, {0, 0, 10000}, vec3zero, vec4zero, vec2zero, 0xff0000ff},
};
int grid[] = { 0, 1, 2, 3, 4, 5 };
ssr_bindvertices(&verts, 6, &grid, 3);
ssr_matrixmode(MATRIX_MODEL);
ssr_loadidentity();
ssr_useprogram(&line_shader);
ssr_draw(PRIMITIVE_LINE);
ssr_unuseprogram();
ssr_enable(ENABLE_WRITEDEPTH);
}
void gizmo_line(Vec3 start, Vec3 end, Color32 color) {
Vert verts[] = {
{0, start, vec3zero, vec4zero, vec2zero, color32_tocolor(&color)},
{1, end, vec3zero, vec4zero, vec2zero, color32_tocolor(&color)},
};
int line[] = { 0, 1};
ssr_bindvertices(&verts, 2, &line, 1);
ssr_matrixmode(MATRIX_MODEL);
ssr_loadidentity();
ssr_useprogram(&line_shader);
ssr_draw(PRIMITIVE_LINE);
ssr_unuseprogram();
}
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