Hi.
I am making a program to draw shapes in devkitpro 3DS, but I am unable to build it due to an error.
I would appreciate it if you could tell me where I can correct the problem.
Is there a library for drawing shapes with devkitpro on 3DS?
If anyone knows, please let me know.
↓The command prompt looks like this.
View attachment 332172
I am making a program to draw shapes in devkitpro 3DS, but I am unable to build it due to an error.
I would appreciate it if you could tell me where I can correct the problem.
C++:
#include <3ds.h>
#include <stdio.h>
#include <string.h>
u8* pDispBuffer;
unsigned char PenColor[3];
unsigned char BrushColor[3];
unsigned int ClippingRect[4];
#define XYtoOfset(x,y) ((239-y)*3+(x*720))
//SelectFrame : set the frame pointer
// u8* pFrame : Pointer to framebuffer obtained by gfxGetFramebuffer
//
// Note: Always specify this before drawing
void SelectFrame(u8* pFrame) {
if (pFrame) {
pDispBuffer = pFrame;
}
}
//SetClipping : set clipping area
// int x1,y1 : start point coordinates
// int x2,y2 : end point coordinates
void SetClipping(int x1, int y1, int x2, int y2) {
ClippingRect[0] = x1;
ClippingRect[1] = y1;
ClippingRect[2] = x2;
ClippingRect[3] = y2;
}
//SetPenColor :pen color
// unsigned char r,g,b :color (RGB)
void SetPenColor(unsigned char r, unsigned char g, unsigned char b) {
PenColor[2] = r;
PenColor[1] = g;
PenColor[0] = b;
}
//SetBrushColor :brush color
// unsigned char r,g,b :color (RGB)
void SetBrushColor(unsigned char r, unsigned char g, unsigned char b) {
BrushColor[2] = r;
BrushColor[1] = g;
BrushColor[0] = b;
}
//DrawDot : draw a point
// int x1,y1: coordinates
//
// Note: the color selected with the pen will be used.
void DrawDot(int x1, int y1) {
if (pDispBuffer == NULL) return;
if ((ClippingRect[0]<=x1)&&(ClippingRect[1]<=y1)&&(ClippingRect[2]>=x1)&&(ClippingRect[3]>=y1))
memcpy(pDispBuffer + XYtoOfset(x1, y1), PenColor, sizeof(PenColor));
}
//DrawLine : draw a line
// int x1,y1 : start point coordinates
// int x2,y2 : end point coordinates
//
// Note: the color selected with the pen will be used.
void DrawLine(int x1, int y1, int x2, int y2) {
DrawLineEx(x1, y1, x2, y2, (PenColor[2] << 16) | (PenColor[1] << 8) | PenColor[0]);
}
void DrawLineEx(int x1, int y1, int x2, int y2, int Color) {
if (pDispBuffer == NULL) return;
unsigned char brg[3] = { 0,0,0 };
brg[2] = ((Color >> 16) & 0xFF);
brg[1] = ((Color >> 8) & 0xFF);
brg[0] = Color & 0xFF;
int sp = 0, i = 0;
double dSlope = 0.0, dSection = 0.0;
if (x1 == x2) {
if (y1 < y2) {
sp = y1;
} else {
sp = y2;
}
for (i = sp; i < abs(y1 - y2)+sp; i++) {
if ((ClippingRect[0]<=x1)&&(ClippingRect[1]<=i)&&(ClippingRect[2]>=x1)&&(ClippingRect[3]>=i))
memcpy(pDispBuffer + XYtoOfset(x1, i), brg, sizeof(brg));
}
return;
}
dSlope = (double)(y1 - y2) / (double)(x1 - x2);
dSection = (double)y1 - dSlope * x1;
if (abs(x1 - x2) >= abs(y1 - y2)) {
if (x1 < x2) {
sp = x1;
} else {
sp = x2;
}
for (i = sp; i < abs(x1 - x2)+sp; i++) {
if ((ClippingRect[0]<=i)&&(ClippingRect[1]<=(int)(dSlope * (double)i + dSection))&&(ClippingRect[2]>=i)&&(ClippingRect[3]>=(int)(dSlope * (double)i + dSection)))
memcpy(pDispBuffer + XYtoOfset(i, (int)(dSlope * (double)i + dSection)), brg, sizeof(brg));
}
} else {
if (y1 < y2) {
sp = y1;
} else {
sp = y2;
}
for (i = sp; i < abs(y1 - y2)+sp; i++) {
if ((ClippingRect[0]<=(int)((dSection*-1 + (double)i) / dSlope))&&(ClippingRect[1]<=i)&&(ClippingRect[2]>=(int)((dSection*-1 + (double)i) / dSlope))&&(ClippingRect[3]>=i))
memcpy(pDispBuffer + XYtoOfset((int)((dSection*-1 + (double)i) / dSlope), i), brg, sizeof(brg));
}
}
}
//DrawRect : draw a filled rectangle
// int x1,y1 : start point coordinates
// int x2,y2 : end point coordinates
//
// Note: the color selected with the brush will be used.
void DrawRect(int x1, int y1, int x2, int y2) {
if (pDispBuffer == NULL) return;
for (int i1 = y1; i1 < y2; i1++) {
for (int i2 = x1; i2 < x2; i2++) {
if ((ClippingRect[0]<=i2)&&(ClippingRect[1]<=i1)&&(ClippingRect[2]>=i2)&&(ClippingRect[3]>=i1))
memcpy(pDispBuffer + XYtoOfset(i2, i1), BrushColor, sizeof(BrushColor));
}
}
}
//DrawFrame : Draw a rectangle with only a frame
// int x1,y1 : start point coordinates
// int x2,y2 : end point coordinates
//
// Note: the color selected with the pen will be used.
void DrawFrame(int x1, int y1, int x2, int y2) {
if (pDispBuffer == NULL) return;
DrawLine(x1, y1, x2, y1);
DrawLine(x2, y1, x2, y2 + 1);
DrawLine(x2, y2, x1, y2);
DrawLine(x1, y2, x1, y1);
}
//DrawCircle : draw a circle
// int x1,y1 : start point coordinates
// int x2,y2 : end point coordinates
// bool bPaint : whether to paint
//
// NOTE: The line will use the color selected with the pen.
// The color selected with the brush is used for filling.
void DrawCircle(int x1, int y1, int x2, int y2, bool bPaint) {
if ((x1 == x2) || (y1 == y2)) return;
int r = (x2 - x1) / 2, oldx = 0, oldy1 = 0, oldy2 = 0;
double f = (double)(y2 - y1) / (double)(x2 - x1),tmp;
int x = x1 + r, y = y1 + (int)((double)r*(double)f);
if (bPaint) {
for (int i = -r; i <= r; i++) {
tmp = f*sqrt(r*r - i*i);
DrawLineEx(x + i, y - tmp, x + i, y + tmp, (BrushColor[2] << 16) | (BrushColor[1] << 8) | BrushColor[0]);
}
}
for (int i = -r; i <= r; i++) {
tmp = f*sqrt(r*r - i*i);
if (i == -r) {
DrawDot(x + i, y - tmp);
DrawDot(x + i, y + tmp);
} else {
DrawLine(x + i, y - tmp, oldx, oldy1);
DrawLine(x + i, y + tmp, oldx, oldy2);
}
oldx = x + i;
oldy1 = y - tmp;
oldy2 = y + tmp;
}
}
int main(void) {
gfxInitDefault();
gfxSetDoubleBuffering(GFX_TOP,true);
int xpos = 190;
int ypos = 110;
while (aptMainLoop()) {
hidScanInput();
unsigned int keyDown = hidKeysDown();
u8* fb = gfxGetFramebuffer(GFX_TOP, GFX_LEFT, NULL, NULL);
SelectFrame(fb);
SetBrushColor(0,0,0);
DrawRect(0,0,400,240);
SetBrushColor(255,255,255);
DrawCircle( xpos, ypos, xpos+20, ypos+20, true);
if (keyDown & KEY_START) break;
gfxFlushBuffers();
gfxSwapBuffers();
gspWaitForVBlank();
};
gfxExit();
return 0;
};Is there a library for drawing shapes with devkitpro on 3DS?
If anyone knows, please let me know.
↓The command prompt looks like this.
View attachment 332172
Last edited by Yukkuri_XP,
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